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Home My WebLink AboutSUB201900156 Calculations 2020-10-30Engineering Calculations Mesa Standard Segmental Retaining Wall Design Rivanna Village - Phase II Albemarle County, Virginia Project No. RW-2212 Date: 10/29/20 Client: Robinson Development Group 150 West Main Street Norfolk, VA 23510 Circeo Geotechnical Engineering, P.C. Michael R. Circeo, P.E. VA PE # 0402-021245 5959 Buckland Mill Road woO�,_p�LTR Roanoke, Virginia 24019 Office: (540) 366-2379 O MICHAEL R. Cell: (540) 354-3260 U No. 021245 E-Mail: MRCirceo@cox.net _�o /O`29�20 �fs�ONAI'�N'it MSEW -- Mechanically Stabilized Earth Walls Pr .M DMVTrw rue Od 2710" 012020 Rivanna Village - Ph2 - Albemarle Co, VA - Pha e 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 9.33 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA Telephone #: Fax #: E-Mail: 24019 (540)366-2379 mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... .. - LRFD 10-27-20.BEN Original date and time of creating this file: October 27, 2020 PROGRAM MODE: ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Rivanna Village - Ph2 - Albemarle Co, VA Page 1 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?.: 'ree Oc127102112020 CA— -221216v. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv. 120.0 Ib/ft 3 Equivalent internal angle of friction, �ww.. 28.00 Equivalent cohesion, c qw. 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Presets Dale?.: 'ree Oc127102112020 Rivanna Village - Ph2 - Albemarle Co, VA CA_-221216v. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivarma Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime' Toe Ocl27102112020 CA- -221216v. Village -Phase 2-Albemarle WMESA-9.33 FT-AASHTO-LUD 10-27-20 BEN INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime' ree Oc127102112020 CA— -221216v. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 9.33 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 7.33 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 6 [ftl Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime' ree Oc127102112020 CA— -221216v. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply P� and P, ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies P, and P, ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1: �b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEH 1.50 (YPro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?.: 'ree Oc127102112020 CA- -221216v. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 3.11, factored bearing load = 2272 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.590 Eccentricity, e/L = 0.1299 CDR-overturnin = 3.49 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 1.33 9.50 2 1.37 1.30 1.299 9.520 1.542 0.1004 UX1400MSE-MD 2 3.33 9.50 2 2.17 2.06 2.060 10.165 1.841 0.0632 UX1400MSE-MD 3 5.33 9.50 2 3.26 3.09 3.089 9.015 2.276 0.0342 UX1400MSE-MD 4 7.33 9.50 2 5.80 5.49 5.492 6.988 2.965 0.0132 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 3.05, factored bearing load = 2298 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.621 Eccentricity,e/L = 0.1382 Fs-overtumin = 3.30 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 1.33 9.50 2 1.72 1.61 1.606 8.460 1.570 0.1065 UX1400MSE-MD 2 3.33 9.50 2 2.65 2.47 2.471 8.437 1.871 0.0666 UX1400MSE-MD 3 5.33 9.50 2 3.87 3.59 3.588 6.972 2.306 0.0357 UX1400MSE-MD 4 7.33 9.50 2 6.48 5.95 5.955 4.693 2.990 0.0135 UX1400MSE-MD Rivarma Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?.: 'ree Oc127102112020 CA--2212 Biv. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance- q-n 7069 7008 [lb/II'] Factored bearing load, 6v 2272.0 2298 [lb/II'] Eccentricity, a 0.61 0.66 [ft] Eccentricity, e/L 0.065 0.070 CDR calculated 3.11 3.05 Base length 9.50 9.50 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 13268.66 [lb/ft], L = 9.50, Unfactored e = 0.53 [ft], and Sigma = 1570.70 [lb/ft 21 Seismic: Unfactored R = 13268.66 [lb/ft], L = 9.50, Unfactored e = 0.78 [ft], and Sigma = 1670.08 [lb/ft 2] SCALE: 6 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 8 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime' ree Oc127102112020 CA— -221216v. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LUD 10-27-20 BEN DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.590 and CDR -seismic =1.621 # Geogrid Geogrid CDR CDR Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 1.33 9.50 1.542 1.570 2 UX1400MSE MD 2 3.33 9.50 1.841 1.871 2 UX1400MSE MD 3 5.33 9.50 2.276 2.306 2 UX1400MSE MD 4 7.33 9.50 2.965 2.990 2 UX1400MSE MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.1299, e/L seismic = 0.1382; Overturning: CDR -static = 3.49, CDR -seismic = 3.30 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 1.33 9.50 0.1004 0.1065 2 UX1400MSE MD 2 3.33 9.50 0.0632 0.0666 2 UX1400MSE MD 3 5.33 9.50 0.0342 0.0357 2 UX1400MSE MD 4 7.33 9.50 0.0132 0.0135 2 UX1400MSE-MD Rivanna Village - Ph2 - Albemarle Co, VA Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime'ree Oc[27102112020 CA- -221216v WNW -Phae2-Albemarle WMESA-9.33 Fr-AASH'IO-LUD 10-27-20 BEN RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 1.33 1226 943.93 189.08 N/A 1.299 N/A 1.606 UX1400MSE-MD 2 3.33 1226 595.40 169.82 N/A 2.060 N/A 2.471 UX1400MSE-MD 3 5.33 1226 396.93 150.57 N/A 3.089 N/A 3.588 UX1400MSE-MD 4 7.33 1226 223.27 131.32 N/A 5.492 N/A 5.955 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geogrid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 1.33 1.000 943.9 189.1 8.90 0.60 8985.8 N/A 9.520 9584.9 N/A 8.460 2 3.33 1.000 595.4 169.8 7.99 1.51 6052.4 N/A 10.165 6455.9 N/A 8.437 3 5.33 1.000 396.9 150.6 7.09 2.41 3578.4 N/A 9.015 3817.0 N/A 6.972 4 7.33 1.000 223.3 131.3 6.18 3.32 1560.2 N/A 6.988 1664.2 N/A 4.693 Rivanna Village - Ph2 - Albemarle Co, VA Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?.: 'ree Oc127102112020 CA--2212 Riv. Village - Ph. 2 - Albemarle WMESA- 9.33 Fr-AASH'IO- LRED 10-27-20 BEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax # Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr DO] 1 1.33 944 1.00 0.33 1295 1362 N/A 1.37 N/A 1.30 UX140OMSE-MD 2 3.33 595 1.00 0.33 1295 1362 N/A 2.17 N/A 2.06 UX140OMSE-MD 3 5.33 397 1.00 0.33 1295 1362 N/A 3.26 N/A 3.09 UX140OMSE-MD 4 7.33 223 1.00 0.33 1295 1362 N/A 5.80 N/A 5.49 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax # Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [lbfll] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr [Ib/ft] 1 1.33 1133 1.00 0.33 1727 1362 N/A 1.72 N/A 1.61 UX140OMSE-MD 2 3.33 765 1.00 0.33 1727 1362 N/A 2.65 N/A 2.47 UX140OMSE-MD 3 5.33 548 1.00 0.33 1727 1362 N/A 3.87 N/A 3.59 UX140OMSE-MD 4 7.33 355 1.00 0.33 1727 1362 N/A 6.48 N/A 5.95 UX140OMSE-MD - Albemarle Co, VA.�...d,� Rivanna Village -- -v - - - - ,�,�,.�.�,��...�,..�..�,..m. ----,�,a - .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Present DMVT/ a T. Oc12710:48'052020 Rivanna Village - Ph2 - Albemarle Co, VA Phase 2- Albemmle Co4NESA - 11.33 Fr-AASHTO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 11.33 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA Telephone #: Fax #: E-Mail: 24019 (540)366-2379 mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... .. - LRFD 10-27-20.BEN Original date and time of creating this file: October 27, 2020 PROGRAM MODE: ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Rivanna Village - Ph2 - Albemarle Co, VA Page 1 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' 'rue Oc[ 2710:6g'OS 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASH'IO- LUD 10-27-20 BEN SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv. 120.0 Ib/ft 3 Equivalent internal angle of friction, +wwv. 28.00 Equivalent cohesion, c q,iv 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Presets Dale?we' 'rue Oc[ 2710:6g'OS 2020 Rivanna Village - Ph2 - Albemarle Co, VA CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivarma Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' Tue Oc[ 2710:6g'05 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle CooMESA - 11.33 Fr-AASHTO- LUD 10-27-20 BEN INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' rue Oc[ 2710:6g'OS 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 11.33 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 9.33 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' rue Oc[ 2710:6g'OS 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASH'IO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply FAE and Por ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies P, and Pur ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1: �b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEH 1.50 (YPro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' 'rue Oc[ 2710:6g'OS 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASH'IO- LUD 10-27-20 BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 2.93, factored bearing load = 2680 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.571 Eccentricity, e/L = 0.1314 CDR-overturnin = 3.43 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 11.00 3 2.99 2.83 2.828 20.061 1.472 0.1182 UX1500MSE-MD 2 2.00 11.00 3 2.79 2.64 2.638 15.705 1.618 0.0940 UX1500MSE-MD 3 4.00 11.00 2 1.78 1.69 1.686 11.691 1.897 0.0628 UX1400MSE-MD 4 6.00 11.00 2 2.45 2.32 2.318 10.538 2.286 0.0378 UX1400MSE-MD 5 8.00 11.00 2 3.92 3.71 3.711 9.384 2.865 0.0187 UX1400MSE-MD 6 10.00 11.00 2 9.61 9.10 9.105 8.066 3.818 0.0056 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 2.86, factored bearing load = 2716 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.604 Eccentricity, e/L = 0.1406 Fs-overtumin = 3.24 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 11.00 3 3.65 3.41 3.405 16.787 1.502 0.1263 UX1500MSE-MD 2 2.00 11.00 3 3.44 3.21 3.214 13.490 1.649 0.1002 UX1500MSE-MD 3 4.00 11.00 2 2.21 2.06 2.063 10.146 1.930 0.0666 UX1400MSE-MD 4 6.00 11.00 2 2.98 2.78 2.783 8.754 2.321 0.0397 UX1400MSE-MD 5 8.00 11.00 2 4.61 4.27 4.272 7.126 2.899 0.0195 UX1400MSE-MD 6 10.00 11.00 2 9.96 9.06 9.057 4.598 3.841 0.0057 UX1400MSE-MD Rivarma Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' 'rue Oc[ 2710:6g'OS 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASH'IO- LUD 10-27-20 BEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance. q-n 7858 7777 [lb/II'] Factored bearing load, 6v 2680.1 2716 [lb/II'] Eccentricity, e 0.76 0.82 [ft] Eccentricity, e/L 0.069 0.075 CDR calculated 2.93 2.86 Base length 11.00 11.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 18072.28 [lb/ft], L = 11.00, Unfactored e = 0.65 [ft], and Sigma = 1863.22 [lb/ft 21 Seismic: Unfactored R = 18072.28 [lb/ft], L = 11.00, Unfactored e = 0.98 [ft], and Sigma = 1999.47 [lb/ft 2] SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 8 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' rue Oc[ 2710:6g'OS 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 FT-AASHTO- LUD 10-27-20 BEN DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.571 and CDR -seismic =1.604 # Geogrid Geogrid CDR CDR Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 11.00 1.472 1.502 3 UX1500MSE-MD 2 2.00 11.00 1.618 1.649 3 UX1500MSE-MD 3 4.00 11.00 1.897 1.930 2 UX1400MSE MD 4 6.00 11.00 2.286 2.321 2 UX1400MSE-MD 5 8.00 11.00 2.865 2.899 2 UX1400MSE MD 6 10.00 11.00 3.818 3.841 2 UX1400MSE MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.1314, e/L seismic = 0.1406; Overturning: CDR -static = 3.43, CDR -seismic = 3.24 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 11.00 0.1182 0.1263 3 UX1500MSE-MD 2 2.00 11.00 0.0940 0.1002 3 UX1500MSE-MD 3 4.00 11.00 0.0628 0.0666 2 UX1400MSE MD 4 6.00 11.00 0.0378 0.0397 2 UX1400MSE MD 5 8.00 11.00 0.0187 0.0195 2 UX1400MSE MD 6 10.00 11.00 0.0056 0.0057 2 UX1400MSE MD Rivanna Village - Ph2 - Albemarle Co, VA Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we'rue Oc[2710:6g'OS 2020 CA-2212 Rive Village -Phase 2-Albemarle Co4NESA-11.33 FT-AASH'IO-LRED 10-27-20 BEN RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 0.67 1997 706.26 193.98 N/A 2.828 N/A 3.405 UX1500MSE-MD 2 2.00 1997 756.93 183.06 N/A 2.638 N/A 3.214 UX1500MSE-MD 3 4.00 1226 727.38 166.63 N/A 1.686 N/A 2.063 UX1400MSFMD 4 6.00 1226 528.91 150.20 N/A 2.318 N/A 2.783 UX1400MSFMD 5 8.00 1226 330.45 133.77 N/A 3.711 N/A 4.272 UX1400MSE-MD 6 10.00 1226 134.68 117.33 N/A 9.105 N/A 9.057 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geoprid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 0.67 1.000 706.3 194.0 10.70 0.30 14168.1 N/A 20.061 15112.6 N/A 16.787 2 2.00 1.000 756.9 183.1 10.09 0.91 11887.7 N/A 15.705 12680.3 N/A 13.490 3 4.00 1.000 727.4 166.6 9.19 1.81 8503.8 N/A 11.691 9070.7 N/A 10.146 4 6.00 1.000 528.9 150.2 8.28 2.72 5573.5 N/A 10.538 5945.1 N/A 8.754 5 8.00 1.000 330.4 133.8 7.38 3.62 3101.0 N/A 9.384 3307.8 N/A 7.126 6 10.00 1.000 134.7 117.3 6.47 4.53 1086.3 N/A 8.066 1158.8 N/A 4.598 Rivanna Village - Ph2 - Albemarle Co, VA Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?we' 'rue Oc[ 2710:6g'05 2020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 11.33 Er-AASHTO- LRED 10-27-20 BEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax p Geognd Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geognd connecton Geognd Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr 00] 1 0.67 706 1.00 0.33 2109 2219 N/A 2.99 N/A 2.83 UX150OMSE-MD 2 2.00 757 1.00 0.33 2109 2219 N/A 2.79 N/A 2.64 UX150OMSE-MD 3 4.00 727 1.00 0.33 1295 1362 N/A 1.78 N/A 1.69 UX140OMSE-MD 4 6.00 529 1.00 0.33 1295 1362 N/A 2.45 N/A 2.32 UX140OMSE-MD 5 8.00 330 1.00 0.33 1295 1362 N/A 3.92 N/A 3.71 UX140OMSE-MD 6 10.00 135 1.00 0.33 1295 1362 N/A 9.61 N/A 9.10 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geognd connection Geognd Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr DO] 1 0.67 900 1.00 0.33 2812 2219 N/A 3.65 N/A 3.41 UX150OMSE-MD 2 2.00 940 1.00 0.33 2812 2219 N/A 3.44 N/A 3.21 UX150OMSE-MD 3 4.00 894 1.00 0.33 1727 1362 N/A 2.21 N/A 2.06 UX140OMSE-MD 4 6.00 679 1.00 0.33 1727 1362 N/A 2.98 N/A 2.78 UX140OMSE-MD 5 8.00 464 1.00 0.33 1727 1362 N/A 4.61 N/A 4.27 UX140OMSE-MD 6 10.00 252 1.00 0.33 1727 1362 N/A 9.96 N/A 9.06 UX140OMSE-MD - Albemarle Co, VA.�...d,� Rivanna Village -- -v - - - - ,�,�,.�.�,��...�,..�..�,..m. ---- ,�,a - .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Pm.M DMVT/ a T. Oa 2710:59'562020 Rivanna Village - Ph2 - Albemarle Co, VA Phase 2- Albemmle Co4NESA - 15.33 FT-AASHTO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 15.33 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA Telephone #: Fax #: E-Mail: 24019 (540)366-2379 mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... .. - LRFD 10-27-20.BEN Original date and time of creating this file: December 1, 2019 PROGRAM MODE: ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Rivanna Village - Ph2 - Albemarle Co, VA Page 1 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we' 'rue Oc[ 2710:59'S62020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 15.33 Fr-AASH'IO- LUD 10-27-20 BEN SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv. 120.0 Ib/ft 3 Equivalent internal angle of friction, �wwv. 28.00 Equivalent cohesion, c q,iv 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls PmseM Dale?we: 'rue Oc[ 2710:59:572020 Rivanna Village - Ph2 - Albemarle Co, VA CA- 2212 R vamm Village- Phase 2- Albemmle Co4NESA - 15.33 Fr-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivarma Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: Tue Oc[ 2710:59:572020 CA- 2212 R vamm Village- Phase 2- Albemmle CooMESA - 15.33 Fr-AASHTO- LUD 10-27-20 BEN INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?uve: rue Oc[ 2710:59:572020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co4NESA - 15.33 Fr-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 15.33 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 13.33 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: rue Oc[ 2710:59:572020 CA- 2212 R vamm Village- Phase 2- Albemmle Co4NESA - 15.33 Fr-AASH'IO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply FAE and Por ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies P, and Pur ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1: �b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEH 1.50 (YPro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: rue Oc[ 2710:59:572020 CA- 2212 R vamm Village- Phase 2- Albemmle Co4NESA - 15.33 FT-AASH'IO- LUD 10-27-20 BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 3.55, factored bearing load = 3309 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.897 Eccentricity, e/L = 0.0861 CDR-overturnin = 4.99 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 17.00 3 2.17 2.06 2.056 31.227 1.816 0.0793 UX1500MSE-MD 2 2.00 17.00 3 2.40 2.27 2.270 30.772 1.955 0.0665 UX1500MSE-MD 3 3.33 17.00 3 2.65 2.51 2.513 29.531 2.116 0.0549 UX1500MSE-MD 4 4.67 17.00 3 2.43 2.30 2.297 23.031 2.306 0.0443 UX1500MSE-MD 5 6.67 17.00 2 1.51 1.43 1.427 17.781 2.660 0.0307 UX1400MSE-MD 6 8.67 17.00 2 1.96 1.86 1.855 16.629 3.137 0.0195 UX1400MSE-MD 7 10.67 17.00 2 2.80 2.65 2.652 15.477 3.813 0.0109 UX1400MSE-MD 8 12.67 17.00 2 5.54 5.25 5.250 16.188 4.850 0.0046 UX1400MSE-MD 9 14.00 17.00 2 13.11 12.42 12.419 18.121 5.910 0.0018 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 3.48, factored bearing load = 3342 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.939 Eccentricity,e/L = 0.0932 Fs-overtumin = 4.68 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 17.00 3 2.68 2.51 2.507 26.878 1.857 0.0857 UX1500MSE-MD 2 2.00 17.00 3 2.95 2.75 2.753 26.162 1.998 0.0718 UX1500MSE-MD 3 3.33 17.00 3 3.25 3.03 3.030 24.777 2.161 0.0592 UX1500MSE-MD 4 4.67 17.00 3 3.00 2.80 2.801 19.840 2.353 0.0477 UX1500MSE-MD 5 6.67 17.00 2 1.87 1.75 1.748 15.466 2.710 0.0329 UX1400MSE-MD 6 8.67 17.00 2 2.39 2.23 2.234 13.909 3.190 0.0208 UX1400MSE-MD 7 10.67 17.00 2 3.33 3.09 3.093 12.084 3.868 0.0115 UX1400MSE-MD 8 12.67 17.00 2 6.05 5.55 5.546 10.334 4.900 0.0048 UX1400MSE-MD 9 14.00 17.00 2 11.69 10.44 10.435 7.725 5.947 0.0018 UX1400MSE-MD Rivarma Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: 'rue Oc[ 2710:59:572020 CA- 2212 R vamm Village- Phase 2- Albemmle Co4NESA - 15.33 FT-AASH'IO- LUD 10-27-20 BEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance. q-n 11731 11632 [lb/ft'] Factored bearing load, 6v 3308.6 3342 [lb/ft'] Eccentricity, e 0.79 0.87 [ft] Eccentricity, e/L 0.046 0.051 CDR calculated 3.55 3.48 Base length 17.00 17.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 36625.44 [lb/ft], L = 17.00, Unfactored e = 0.67 [ft], and Sigma = 2338.49 [lb/ft 21 Seismic: Unfactored R = 36625.44 [lb/ft], L = 17.00, Unfactored e = 1.07 [ft], and Sigma = 2465.66 [lb/ft 2] SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 8 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: rue Oc[ 2710:59:572020 CA- 2212 R vamm Village- Phase 2- Albemmle Co4NESA - 15.33 Fr-AASH'IO- LUD 10-27-20 BEN DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.897 and CDR -seismic =1.939 # Geogrid Geogrid CDR CDR Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 17.00 1.816 1.857 3 UX1500MSE-MD 2 2.00 17.00 1.955 1.998 3 UX1500MSE-MD 3 3.33 17.00 2.116 2.161 3 UX1500MSE-MD 4 4.67 17.00 2.306 2.353 3 UX1500MSE-MD 5 6.67 17.00 2.660 2.710 2 UX1400MSE MD 6 8.67 17.00 3.137 3.190 2 UX1400MSE MD 7 10.67 17.00 3.813 3.868 2 UX1400MSE MD 8 12.67 17.00 4.850 4.900 2 UX1400MSE MD 9 14.00 17.00 5.910 5.947 2 UX1400MSE MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.0861, elf, seismic = 0.0932; Overturning: CDR -static = 4.99, CDR -seismic = 4.68 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 17.00 0.0793 0.0857 3 UX150OMSE-MD 2 2.00 17.00 0.0665 0.0718 3 UX1500MSE-MD 3 3.33 17.00 0.0549 0.0592 3 UX1500MSE-MD 4 4.67 17.00 0.0443 0.0477 3 UX1500MSE-MD 5 6.67 17.00 0.0307 0.0329 2 UX1400MSE MD 6 8.67 17.00 0.0195 0.0208 2 UX1400MSE MD 7 10.67 17.00 0.0109 0.0115 2 UX1400MSE MD 8 12.67 17.00 0.0046 0.0048 2 UX1400MSE MD 9 14.00 17.00 0.0018 0.0018 2 UX1400MSE MD Rivarma Village -- -v - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: rue Oc[2710:59:572020 CA-2212 Rive Village -Phase 2-Albemarle Co4NESA-15.33 Fr-AASH'IO-LRED 10-27-20 BEN RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 0.67 1997 971.21 232.37 N/A 2.056 N/A 2.507 UX1500MSE-MD 2 2.00 1997 879.65 223.99 N/A 2.270 N/A 2.753 UX1500MSE-MD 3 3.33 1997 794.69 215.60 N/A 2.513 N/A 3.030 UX1500MSE-MD 4 4.67 1997 869.61 207.16 N/A 2.297 N/A 2.801 UX1500MSE-MD 5 6.67 1226 859.36 194.55 N/A 1.427 N/A 1.748 UX1400MSE-MD 6 8.67 1226 660.89 181.94 N/A 1.855 N/A 2.234 UX1400MSE-MD 7 10.67 1226 462.43 169.33 N/A 2.652 N/A 3.093 UX1400MSE-MD 8 12.67 1226 233.58 156.72 N/A 5.250 N/A 5.546 UX1400MSE-MD 9 14.00 1226 98.74 148.33 N/A 12.419 N/A 10.435 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geoprid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 0.67 1.000 971.2 232.4 16.70 0.30 30328.5 N/A 31.227 32350.4 N/A 26.878 2 2.00 1.000 879.6 224.0 16.09 0.91 27068.4 N/A 30.772 28873.0 N/A 26.162 3 3.33 1.000 794.7 215.6 15.49 1.51 23467.8 N/A 29.531 25032.3 N/A 24.777 4 4.67 1.000 869.6 207.2 14.88 2.12 20028.3 N/A 23.031 21363.5 N/A 19.840 5 6.67 1.000 859.4 194.5 13.98 3.02 15280.6 N/A 17.781 16299.3 N/A 15.466 6 8.67 1.000 660.9 181.9 13.07 3.93 10990.2 N/A 16.629 11722.8 N/A 13.909 7 10.67 1.000 462.4 169.3 12.17 4.83 7157.0 N/A 15.477 7634.2 N/A 12.084 8 12.67 1.000 233.6 156.7 11.26 5.74 3781.2 N/A 16.188 4033.3 N/A 10.334 9 14.00 1.000 98.7 148.3 10.66 6.34 1789.3 N/A 18.121 1908.5 N/A 7.725 - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�..�,..m. Rivanna Village -- -v ----,�,a-.®,�,.�.7,��..7,..e..�,..�..�.a Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PmseM Dale?we: 'rue Oc[2710:59:572020 CA-2212 Rive Village -Phase 2-Albemmle Co4NESA-15.33 Er-AASH'IO-LRED 10-27-20 BEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr 00] 1 0.67 971 1.00 0.33 2109 2219 N/A 2.17 N/A 2.06 UX150OMSF-MD 2 2.00 880 1.00 0.33 2109 2219 N/A 2.40 N/A 2.27 UX150OMSE-MD 3 3.33 795 1.00 0.33 2109 2219 N/A 2.65 N/A 2.51 UX150OMSE-MD 4 4.67 870 1.00 0.33 2109 2219 N/A 2.43 N/A 2.30 UX150OMSE-MD 5 6.67 859 1.00 0.33 1295 1362 N/A 1.51 N/A 1.43 UX140OMSE-MD 6 8.67 661 1.00 0.33 1295 1362 N/A 1.96 N/A 1.86 UX140OMSE-MD 7 10.67 462 1.00 0.33 1295 1362 N/A 2.80 N/A 2.65 UX140OMSE-MD 8 12.67 234 1.00 0.33 1295 1362 N/A 5.54 N/A 5.25 UX140OMSE-MD 9 14.00 99 1.00 0.33 1295 1362 N/A 13.11 N/A 12.42 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [IWft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) pb/ft] Specified Actual Specified Actual CRult CRcr [101 1 0.67 1204 1.00 0.33 2812 2219 N/A 2.68 N/A 2.51 UX150OMSE-MD 2 2.00 1104 1.00 0.33 2812 2219 N/A 2.95 N/A 2.75 UX150OMSE-MD 3 3.33 1010 1.00 0.33 2812 2219 N/A 3.25 N/A 3.03 UX150OMSE-MD 4 4.67 1077 1.00 0.33 2812 2219 N/A 3.00 N/A 2.80 UX150OMSE-MD 5 6.67 1054 1.00 0.33 1727 1362 N/A 1.87 N/A 1.75 UX140OMSE-MD 6 8.67 843 1.00 0.33 1727 1362 N/A 2.39 N/A 2.23 UX140OMSE-MD 7 10.67 632 1.00 0.33 1727 1362 N/A 3.33 N/A 3.09 UX1400MSE-MD 8 12.67 390 1.00 0.33 1727 1362 N/A 6.05 N/A 5.55 UX140OMSE-MD 9 14.00 247 1.00 0.33 1727 1362 N/A 11.69 N/A 10.44 UX140OMSE-MD Rivanna Village -- -v - Albemarle Co, VA.�...d,� - - - - ,�,�,.�.�,��...�,..�..�,..m. ---- ,�,a - .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Pm.M DMVTrw T. Oc1271121342020 Rivanna Village - Ph2 - Albemarle Co, VA Phase 2- Albemmle Co4NESA - 19.33 FT-AASHTO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 19.33 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA Telephone #: Fax #: E-Mail: 24019 (540)366-2379 mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... .. - LRFD 10-27-20.BEN Original date and time of creating this file: December 1, 2019 PROGRAM MODE: ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Rivanna Village - Ph2 - Albemarle Co, VA Page 1 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: 'roe Oc12711:21:362020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv. 120.0 Ib/ft 3 Equivalent internal angle of friction, +wwv. 28.00 Equivalent cohesion, c q,iv 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Presets Dale?ime: 'roe Oc12711:21:362020 Rivanna Village - Ph2 - Albemarle Co, VA CA- 2212 R vamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivarma Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: Toe Oe 2711:21:362020 CA- 2212 R vamm Village- Phase 2- Albemmle Co\WSA - 19.33 FT-AASHTO- LUD 10-27-20 BEN INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: roe Ocl2711:21:362020 CA- 2212 Rivamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 19.33 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 17.33 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0246 8 10[ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: roe Ocl2711:21:362020 CA- 2212 R vamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply P� and Por ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies P, and Pur ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1: �b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEH 1.50 (YPro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: roe Ocl2711:21:362020 CA- 2212 R vamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 3.91, factored bearing load = 3984 Ib/ft'. Foundation Interface: Direct slidin CDR = 2.107 Eccentricity, e/L = 0.0675 CDR-overturniniz= 6.16 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 23.00 3 1.71 1.62 1.616 42.376 2.044 0.0630 UX1500MSE-MD 2 2.00 23.00 3 1.49 1.41 1.409 33.978 2.171 0.0546 UX1500MSE-MD 3 4.00 23.00 3 1.39 1.31 1.313 26.956 2.395 0.0431 UX1500MSE-MD 4 6.00 23.00 3 1.59 1.51 1.510 25.803 2.667 0.0330 UX1500MSE-MD 5 8.00 23.00 3 1.88 1.78 1.776 24.650 3.007 0.0243 UX1500MSE-MD 6 10.00 23.00 2 1.40 1.32 1.324 23.497 3.443 0.0169 UX1400MSE-MD 7 12.00 23.00 2 1.78 1.69 1.686 22.344 4.022 0.0109 UX1400MSE-MD 8 14.00 23.00 2 2.45 2.32 2.318 21.191 4.828 0.0061 UX1400MSE-MD 9 16.00 23.00 2 3.92 3.71 3.711 20.038 6.028 0.0028 UX1400MSE-MD 10 18.00 23.00 2 9.61 9.10 9.105 18.506 8.002 0.0007 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 3.84, factored bearing load = 4018 Ib/ft'. Foundation Interface: Direct slidin CDR = 2.157 Eccentricity,e/L = 0.0736 Fs -overturning = 5.74 GEOGRID CONNECTION CDR CDR GeoWid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 23.00 3 2.09 1.95 1.950 35.667 2.092 0.0687 UX1500MSE-MD 2 2.00 23.00 3 1.85 1.73 1.725 29.541 2.221 0.0595 UX1500MSE-MD 3 4.00 23.00 3 1.73 1.62 1.622 23.906 2.449 0.0469 UX1500MSE-MD 4 6.00 23.00 3 1.98 1.85 1.852 22.500 2.725 0.0359 UX1500MSE-MD 5 8.00 23.00 3 2.31 2.16 2.157 21.020 3.070 0.0263 UX1500MSE-MD 6 10.00 23.00 2 1.70 1.59 1.586 19.423 3.510 0.0183 UX1400MSE-MD 7 12.00 23.00 2 2.13 1.98 1.976 17.634 4.093 0.0117 UX1400MSE-MD 8 14.00 23.00 2 2.84 2.62 2.622 15.498 4.902 0.0066 UX1400MSE-MD 9 16.00 23.00 2 4.25 3.89 3.893 12.618 6.099 0.0029 UX1400MSE-MD 10 18.00 23.00 2 8.38 7.46 7.462 7.578 8.052 0.0007 UX1400MSE-MD Rivarma Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: 'roe Oc12711:21:362020 CA- 2212 R vamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance. q-n 15562 15442 [lb/II'] Factored bearing load, 6v 3983.7 4018 [lb/II'] Eccentricity, a 0.85 0.94 [ft] Eccentricity, e/L 0.037 0.041 CDR calculated 3.91 3.84 Base length 23.00 23.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 61254.89 [lb/ft], L = 23.00, Unfactored e = 0.72 [ft], and Sigma = 2840.34 [lb/ft 21 Seismic: Unfactored R = 61254.89 [lb/ft], L = 23.00, Unfactored e = 1.20 [ft], and Sigma = 2973.87 [lb/ft 2] SCALE: 0246810[ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 8 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime: roe Ocl2711:21:362020 CA- 2212 R vamm Village- Phase 2- Albemmle Co\WSA - 19.33 Fr-AASH'IO- LUD 10-27-20 BEN DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 2.107 and CDR -seismic = 2.157 # Geogrid Geogrid CDR CDR Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 23.00 2.044 2.092 3 UX1500MSE-MD 2 2.00 23.00 2.171 2.221 3 UX1500MSE-MD 3 4.00 23.00 2.395 2.449 3 UX1500MSE-MD 4 6.00 23.00 2.667 2.725 3 UX1500MSE-MD 5 8.00 23.00 3.007 3.070 3 UX1500MSE-MD 6 10.00 23.00 3.443 3.510 2 UX1400MSE MD 7 12.00 23.00 4.022 4.093 2 UX1400MSE MD 8 14.00 23.00 4.828 4.902 2 UX1400MSE MD 9 16.00 23.00 6.028 6.099 2 UX1400MSE MD 10 18.00 23.00 8.002 8.052 2 UX1400MSE MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.0675, e/L seismic = 0.0736; Overturning: CDR -static = 6.16, CDR -seismic = 5.74 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 23.00 0.0630 0.0687 3 UX1500MSE-MD 2 2.00 23.00 0.0546 0.0595 3 UX1500MSE-MD 3 4.00 23.00 0.0431 0.0469 3 UX1500MSE-MD 4 6.00 23.00 0.0330 0.0359 3 UX1500MSE-MD 5 8.00 23.00 0.0243 0.0263 3 UX1500MSE-MD 6 10.00 23.00 0.0169 0.0183 2 UX1400MSE MD 7 12.00 23.00 0.0109 0.0117 2 UX1400MSE MD 8 14.00 23.00 0.0061 0.0066 2 UX1400MSE MD 9 16.00 23.00 0.0028 0.0029 2 UX1400MSE MD 10 18.00 23.00 0.0007 0.0007 2 UX1400MSE MD - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�.-,..�. Rivarma Village -- -v ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime:roe Oe[2711:21:362020 CA-2212 Rive Village -Phase 2-Albemarle Co\WSA-19.33 Fr-AASH'IO-LRPD 10-27-20 BEN RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 0.67 1997 1236.17 330.44 N/A 1.616 N/A 1.950 UX1500MSE-MD 2 2.00 1997 1417.82 321.67 N/A 1.409 N/A 1.725 UX1500MSE-MD 3 4.00 1997 1521.24 308.47 N/A 1.313 N/A 1.622 UX1500MSE-MD 4 6.00 1997 1322.77 295.28 N/A 1.510 N/A 1.852 UX1500MSE-MD 5 8.00 1997 1124.31 282.09 N/A 1.776 N/A 2.157 UX1500MSE-MD 6 10.00 1226 925.84 268.90 N/A 1.324 N/A 1.586 UX1400MSE MD 7 12.00 1226 727.38 255.71 N/A 1.686 N/A 1.976 UX1400MSE MD 8 14.00 1226 528.91 242.52 N/A 2.318 N/A 2.622 UX1400MSE-MD 9 16.00 1226 330.45 229.33 N/A 3.711 N/A 3.893 UX1400MSE MD 10 18.00 1226 134.68 216.14 N/A 9.105 N/A 7.462 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geoprid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 0.67 1.000 1236.2 330.4 22.70 0.30 52383.3 N/A 42.376 55875.5 N/A 35.667 2 2.00 1.000 1417.8 321.7 22.09 0.91 48175.0 N/A 33.978 51386.6 N/A 29.541 3 4.00 1.000 1521.2 308.5 21.19 1.81 41006.5 N/A 26.956 43740.3 N/A 23.906 4 6.00 1.000 1322.8 295.3 20.28 2.72 34131.6 N/A 25.803 36407.0 N/A 22.500 5 8.00 1.000 1124.3 282.1 19.38 3.62 27714.3 N/A 24.650 29561.9 N/A 21.020 6 10.00 1.000 925.8 268.9 18.47 4.53 21754.6 N/A 23.497 23205.0 N/A 19.423 7 12.00 1.000 727.4 255.7 17.56 5.44 16252.6 N/A 22.344 17336.2 N/A 17.634 8 14.00 1.000 528.9 242.5 16.66 6.34 11208.3 N/A 21.191 11955.5 N/A 15.498 9 16.00 1.000 330.4 229.3 15.75 7.25 6621.6 N/A 20.038 7063.0 N/A 12.618 10 18.00 1.000 134.7 216.1 14.85 8.15 2492.5 N/A 18.506 2658.6 N/A 7.578 Rivanna Village -- -v - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�..�,..m. ----,�,a-.®,�,.�.7,��..7,..e..�,..�..�.a Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Presets Dale?ime:'roe Oc12711:21:362020 CA-2212 Rive Village -Phase 2-Albemmle Co\WSA-19.33 Er-AASHTO-LRED 10-27-20 BEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr 00] 1 0.67 1236 1.00 0.33 2109 2219 N/A 1.71 N/A 1.62 UX150OMSE-MD 2 2.00 1418 1.00 0.33 2109 2219 N/A 1.49 N/A 1.41 UX150OMSE-MD 3 4.00 1521 1.00 0.33 2109 2219 N/A 1.39 N/A 1.31 UX150OMSE-MD 4 6.00 1323 1.00 0.33 2109 2219 N/A 1.59 N/A 1.51 UX150OMSE-MD 5 8.00 1124 1.00 0.33 2109 2219 N/A 1.88 N/A 1.78 UX150OMSE-MD 6 10.00 926 1.00 0.33 1295 1362 N/A 1.40 N/A 1.32 UX140OMSE-MD 7 12.00 727 1.00 0.33 1295 1362 N/A 1.78 N/A 1.69 UX140OMSE-MD 8 14.00 529 1.00 0.33 1295 1362 N/A 2.45 N/A 2.32 UX140OMSE-MD 9 16.00 330 1.00 0.33 1295 1362 N/A 3.92 N/A 3.71 UX140OMSE-MD 10 18.00 135 1.00 0.33 1295 1362 N/A 9.61 N/A 9.10 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) Pb/fit] Specified Actual Specified Actual CRult CRcr 001 1 0.67 1567 1.00 0.33 2812 2219 N/A 2.09 N/A 1.95 UX150OMSE-MD 2 2.00 1739 1.00 0.33 2812 2219 N/A 1.85 N/A 1.73 UX150OMSF-MD 3 4.00 1830 1.00 0.33 2812 2219 N/A 1.73 N/A 1.62 UX150OMSE-MD 4 6.00 1618 1.00 0.33 2812 2219 N/A 1.98 N/A 1.85 UX150OMSE-MD 5 8.00 1406 1.00 0.33 2812 2219 N/A 2.31 N/A 2.16 UX150OMSE-MD 6 10.00 1195 1.00 0.33 1727 1362 N/A 1.70 N/A 1.59 UX140OMSE-MD 7 12.00 983 1.00 0.33 1727 1362 N/A 2.13 N/A 1.98 UX140OMSE-MD 8 14.00 771 1.00 0.33 1727 1362 N/A 2.84 N/A 2.62 UX140OMSE-MD 9 16.00 560 1.00 0.33 1727 1362 N/A 4.25 N/A 3.89 UX140OMSE-MD 10 18.00 351 1.00 0.33 1727 1362 N/A 8.38 N/A 7.46 UX140OMSE-MD - Albemarle Co, VA.�...d,� Rivanna Village -- -v - - - - ,�,�,.�.�,��...�,..�..�,..m. ---- ,�,a - .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 Engineering Calculations Mesa Standard Segmental Retaining Wall Design Rivanna Village - Phase II Albemarle County, Virginia Project No. RW-2212 Date: 12/1/19 Client: Robinson Development Group 150 West Main Street Norfolk, VA 23510 Circeo Geotechnical Engineering, P.C. Michael R. Circeo, P.E. VA PE # 0402-021245 C'�'�S'��ONOVAL 5959 Buckland Mill RoadRoanoke, Virginia 24019Office: (540) 366-237945 Cell: (540) 354-3260/ E-Mail: MRCirceo@cox.net E MSEW -- Mechanically Stabilized Earth Walls Pre.M DMVT/ e: Sun Dec 012109: 182019 Rivanna Village - Ph2 - Albemarle Co, VA C:\.. naW-2212Rv� Villaee-Phase2-Albemarle Co\MESA-srr-AASWO-L D12-1-19nEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 8 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA Telephone #: Fax #: E-Mail: 24019 (540)366-2379 mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... ..... 0-LRFD 12-1-19.BEN Original date and time of creating this file: December 1, 2019 PROGRAM MODE: Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Page 1 of I License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Phase2-Albemarle Co\MESA-9F-AASWO-L D12-1-19aEN SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv. 120.0 Ib/ft 3 Equivalent internal angle of friction, 28.00 Equivalent cohesion, c q,iv 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Preseol Dale?we' Bun Dec 0121:09: 182019 Rivanna Village - Ph2 - Albemarle Co, VA C'\.. naW-2212Rvarma Village-Pbeu2-Albemarle Co\MESA-Brr-AASWO-L D12-1-19a INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivanna Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Pbese2-Albemarle Co\MESA-9F-AASWO-L D12-1-19a INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a t11 CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Phase2-Albemarle Co\MESA-9F-AASWO-L D12-1-19B INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 8.00 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 6.00 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0 2 4 6 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Phase2-Albemarle Co\MESA-9F-AASWO-L D12-1-19E AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply FAE and P, ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies PAE and P, ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1A: , y b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEx 1.50 (7Pro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Pbeu2-Albemarle Co\MESA-BEr-AASWO-L D12-1-19BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 3.02, factored bearing load = 2040 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.510 Eccentricity, e/L = 0.1464 CDR-overturnin = 3.13 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 2.00 8.00 2 1.34 1.27 1.267 5.554 1.543 0.0924 UX1400MSE-MD 2 4.00 8.00 2 3.26 3.09 3.089 7.873 1.911 0.0502 UX1400MSE-MD 3 6.00 8.00 2 5.80 5.49 5.492 5.972 2.493 0.0195 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 2.96, factored bearing load = 2063 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.538 Eccentricity, e/L = 0.1550 Fs-overtumin = 2.98 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 2.00 8.00 2 1.68 1.58 1.575 4.995 1.568 0.0972 UX1400MSE-MD 2 4.00 8.00 2 3.85 3.57 3.568 6.017 1.936 0.0523 UX1400MSE-MD 3 6.00 8.00 2 6.45 5.93 5.932 3.980 2.514 0.0201 UX1400MSE-MD Rivanna Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Pbeu2-Albemarle Co\MESA-BEr-AASWO-L D12-1-19DEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance. q-n 6157 6105 [lb/ft'] Factored bearing load, 6v 2039.6 2063 []b/ft'] Eccentricity, a 0.56 0.60 [ft] Eccentricity, e/L 0.071 0.075 CDR calculated 3.02 2.96 Base length 8.00 8.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 9835.19 [lb/ft], L = 8.00, Unfactored e = 0.48 [ft], and Sigma = 1398.80 [lb/ft 2] Seismic: Unfactored R = 9835.19 []b/ft], L = 8.00, Unfactored e = 0.70 [ft], and Sigma = 1489.36 []b/ft I SCALE: 6 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 8 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Pbeu2-Albemarle Co\MESA-9F-AASWO-L D12-1-19D DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.510 and CDR -seismic =1.538 # Geogrid Geogrid CDR CDR Required facing resistance Geogrid Elevation Length Static Seismic to render target: in [lb/II] Type # Product name [ft] [ft] Rf r (Static) Rf r (Seismic) 0 (at Foundation Interface) 0.00 0.00 1 2.00 8.00 1.543 1.568 0.00 0.00 2 UX1400MSE-MD 2 4.00 8.00 1.911 1.936 0.00 0.00 2 UX1400MSE-MD 3 6.00 8.00 2.493 2.514 0.00 0.00 2 UX1400MSE-MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.1464, e/L seismic = 0.1550; Overturning: CDR -static = 3.13, CDR -seismic = 2.98 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 2.00 8.00 0.0924 0.0972 2 UX1400MSE-MD 2 4.00 8.00 0.0502 0.0523 2 UX1400MSE-MD 3 6.00 8.00 0.0195 0.0201 2 UX1400MSE-MD Rivanna Village - Ph2 - Albemarle Co, VA Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Pbeu2-Albemarle Co\MESA-9F-AASWO-L D12-1-19DEN RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 2.00 1226 967.52 180.03 N/A 1.267 N/A 1.575 UX1400MSE-MD 2 4.00 1226 396.93 157.04 N/A 3.089 N/A 3.568 UX1400MSE-MD 3 6.00 1226 223.27 134.05 N/A 5.492 N/A 5.932 UX1400MSE MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geoprid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 2.00 1.000 967.5 180.0 7.09 0.91 5373.3 N/A 5.554 5731.6 N/A 4.995 2 4.00 1.000 396.9 157.0 6.19 1.81 3125.1 N/A 7.873 3333.5 N/A 6.017 3 6.00 1.000 223.3 134.0 5.28 2.72 1333.4 N/A 5.972 1422.3 N/A 3.980 Rivanna Village - Ph2 - Albemarle Co, VA Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA Preseol Dale?we' Bun Dec 0121:09: 182019 C'\.. naW-2212Rvarma Village-Pbeu2-Albemarle Co\MESA-9F-AASWO-L D12-1-19aEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reducton Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr DO] 1 2.00 968 1.00 0.33 1295 1362 N/A 1.34 N/A 1.27 UX1400MSE-MD 2 4.00 397 1.00 0.33 1295 1362 N/A 3.26 N/A 3.09 UX1400MSE-MD 3 6.00 223 1.00 0.33 1295 1362 N/A 5.80 N/A 5.49 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr 00] 1 2.00 1148 1.00 0.33 1727 1362 N/A 1.68 N/A 1.58 UX1400MSE-MD 2 4.00 554 1.00 0.33 1727 1362 N/A 3.85 N/A 3.57 UX1400MSE-MD 3 6.00 357 1.00 0.33 1727 1362 N/A 6.45 N/A 5.93 UX140OMSE-MD Rivanna Village -— —v - Albemarle Co, VA.�...d,� — — - — ,�,�,.�.�,��...�,..�..�,..m. ----,�,a — .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Pre.M DMVT/ e: Son Dec 012105412019 Rivanna Village - Ph2 - Albemarle Co, VA C:l__UtW-2212Riv Village-Phae2-Albemarle Co\WSA-12F-AASWO-EKED12-1-19BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 12 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA 24019 Telephone #: (540) 366-2379 Fax #: E-Mail: mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... ..... 0-LRFD 12-1-19.BEN Original date and time of creating this file: December 1, 2019 PROGRAM MODE: Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Page 1 of I License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d12019 C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12F-AASWO-L D12-1-19AD4 SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv 120.0 Ib/ft 3 Equivalent internal angle of friction, 28.00 Equivalent cohesion, c qw. 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls PreuM Dale?we: Sun Dec 0121OS:d12019 Rivanna Village - Ph2 - Albemarle Co, VA C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12F-AASWO-L D12-1-19a INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivanna Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121:OS:dI j0ll C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12F-AASWO-L D12-1-19a INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d12019 C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12F-AASWO-L D12-1-19B INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 12.00 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 10.00 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0 2 4 6 8 10 [II] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d12019 C:l__UtW-22121liv Villap-Pha 2-Albemarle ColhlESA-12Er-AASWO-L D12-1-19E AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply FAE and P, ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies PAE and P, ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1A: , r b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEx 1.50 (7Pro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d12019 C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12Er-AASWO-L D12-1-19DEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 2.70, factored bearing load = 2863 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.496 Eccentricity, e/L = 0.1454 CDR-overturnin = 3.13 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 11.00 2 1.73 1.63 1.634 20.014 1.407 0.1314 UX1400MSE-MD 2 2.00 11.00 2 1.59 1.51 1.510 15.687 1.541 0.1058 UX1400MSE-MD 3 4.00 11.00 2 1.63 1.54 1.545 11.691 1.794 0.0725 UX1400MSE-MD 4 6.00 11.00 2 2.17 2.06 2.060 10.536 2.140 0.0455 UX1400MSE-MD 5 8.00 11.00 2 3.26 3.09 3.089 9.381 2.642 0.0244 UX1400MSE-MD 6 10.00 11.00 2 5.80 5.49 5.492 7.317 3.437 0.0093 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 2.63, factored bearing load = 2907 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.527 Eccentricity, e/L = 0.1558 Fs-overtumin = 2.95 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 11.00 2 2.10 1.96 1.957 16.550 1.436 0.1406 UX1400MSE-MD 2 2.00 11.00 2 1.96 1.83 1.832 13.356 1.571 0.1130 UX1400MSE-MD 3 4.00 11.00 2 2.02 1.89 1.886 10.093 1.827 0.0771 UX1400MSE-MD 4 6.00 11.00 2 2.65 2.47 2.473 8.759 2.174 0.0480 UX1400MSE-MD 5 8.00 11.00 2 3.87 3.59 3.589 7.261 2.677 0.0255 UX1400MSE-MD 6 10.00 11.00 2 6.47 5.95 5.952 4.910 3.466 0.0096 UX1400MSE-MD Rivanna Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d22019 C:l__UtW-22121liv Villap-Pha 2-Albemarle ColhlESA-12F-AASWO-L SA-1-19DEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance- q-n 7727 7635 [lb/II'] Factored bearing load, 6v 2863.3 2907 [lb/II'] Eccentricity, a 0.86 0.93 [ft] Eccentricity, e/L 0.078 0.085 CDR calculated 2.70 2.63 Base length 11.00 11.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 18937.24 [lb/ft], L = 11.00, Unfactored e = 0.74 [ft], and Sigma = 1988.23 [lb/ft 21 Seismic: Unfactored R = 18937.24 [lb/ft], L = 11.00, Unfactored e = 1.11 [ft], and Sigma = 2158.01 [lb/ft 2] SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 8 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d22019 C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12F-AASWO-L D12-1-19D DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.496 and CDR -seismic =1.527 # Geogrid Geogrid CDR CDR Required facing resistance Geogrid Elevation Length Static Seismic to render target: in [lb/II] Type # Product name [ft] [ft] Rf r (Static) Rf r (Seismic) 0 (at Foundation Interface) 0.00 0.00 1 0.67 11.00 1.407 1.436 0.00 0.00 2 UX1400MSE-MD 2 2.00 11.00 1.541 1.571 0.00 0.00 2 UX1400MSE-MD 3 4.00 11.00 1.794 1.827 0.00 0.00 2 UX1400MSE-MD 4 6.00 11.00 2.140 2.174 0.00 0.00 2 UX1400MSE-MD 5 8.00 11.00 2.642 2.677 0.00 0.00 2 UX1400MSE-MD 6 10.00 11.00 3.437 3.466 0.00 0.00 2 UX1400MSE-MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.1454, e/L seismic = 0.1558; Overturning: CDR -static = 3.13, CDR -seismic = 2.95 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 11.00 0.1314 0.1406 2 UX1400MSE-MD 2 2.00 11.00 0.1058 0.1130 2 UX1400MSE-MD 3 4.00 11.00 0.0725 0.0771 2 UX1400MSE-MD 4 6.00 11.00 0.0455 0.0480 2 UX1400MSE-MD 5 8.00 11.00 0.0244 0.0255 2 UX1400MSE-MD 6 10.00 11.00 0.0093 0.0096 2 UX1400MSE-MD Rivanna Village - Ph2 - Albemarle Co, VA Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d22019 C:l__UtW-22121liv Villap-Pha 2-Albemarle Co\WSA-12rr-AASWO-L D12-1-19AD4 RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 0.67 1226 750.64 217.61 N/A 1.634 N/A 1.957 UX1400MSFMD 2 2.00 1226 812.28 205.35 N/A 1.510 N/A 1.832 UX1400MSFMD 3 4.00 1226 793.86 186.92 N/A 1.545 N/A 1.886 UX1400MSFMD 4 6.00 1226 595.40 168.49 N/A 2.060 N/A 2.473 UX1400MSFMD 5 8.00 1226 396.93 150.05 N/A 3.089 N/A 3.589 UX1400MSE-MD 6 10.00 1226 223.27 131.62 N/A 5.492 N/A 5.952 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geoprid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 0.67 1.000 750.6 217.6 10.70 0.30 15023.0 N/A 20.014 16024.6 N/A 16.550 2 2.00 1.000 812.3 205.3 10.09 0.91 12742.0 N/A 15.687 13591.5 N/A 13.356 3 4.00 1.000 793.9 186.9 9.19 1.81 9280.7 N/A 11.691 9899.4 N/A 10.093 4 6.00 1.000 595.4 168.5 8.28 2.72 6273.0 N/A 10.536 6691.2 N/A 8.759 5 8.00 1.000 396.9 150.1 7.38 3.62 3723.6 N/A 9.381 3971.9 N/A 7.261 6 10.00 1.000 223.3 131.6 6.47 4.53 1633.6 N/A 7.317 1742.5 N/A 4.910 Rivanna Village - Ph2 - Albemarle Co, VA Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we: Sun Dec 0121OS:d22019 C:l__UtW-2212aiv Village-Pha 2-Albemarle Co\WSA-12rr-AASWO-L D12-1-19aEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr DO] 1 0.67 751 1.00 0.33 1295 1362 N/A 1.73 N/A 1.63 UX140OMSE-MD 2 2.00 812 1.00 0.33 1295 1362 N/A 1.59 N/A 1.51 UX1400MSE-MD 3 4.00 794 1.00 0.33 1295 1362 N/A 1.63 N/A 1.54 UX140OMSE-MD 4 6.00 595 1.00 0.33 1295 1362 N/A 2.17 N/A 2.06 UX140OMSE-MD 5 8.00 397 1.00 0.33 1295 1362 N/A 3.26 N/A 3.09 UX140OMSE-MD 6 10.00 223 1.00 0.33 1295 1362 N/A 5.80 N/A 5.49 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr DO] 1 0.67 968 1.00 0.33 1727 1362 N/A 2.10 N/A 1.96 UX140OMSE-MD 2 2.00 1018 1.00 0.33 1727 1362 N/A 1.96 N/A 1.83 UX140OMSE-MD 3 4.00 981 1.00 0.33 1727 1362 N/A 2.02 N/A 1.89 UX140OMSE-MD 4 6.00 764 1.00 0.33 1727 1362 N/A 2.65 N/A 2.47 UX140OMSE-MD 5 8.00 547 1.00 0.33 1727 1362 N/A 3.87 N/A 3.59 UX140OMSE-MD 6 10.00 355 1.00 0.33 1727 1362 N/A 6.47 N/A 5.95 UX140OMSE-MD - Albemarle Co, VA.�...d,� Rivanna Village -- -v - - - - ,�,�,.�.�,��...�,..at..�,..m. ---- ,�,a -.®,�,.�.7,��..7,..e..�,..at..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Pre.M DMVT/ e: Sun Dec 0120:57:052019 Rivanna Village - Ph2 - Albemarle Co, VA C:l__UtW-2212Riv Village-Phae2-Albemarle Co\MESA-16F-AASWO-EKED12-1-19BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 16 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA 24019 Telephone #: (540) 366-2379 Fax #: E-Mail: mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... ..... 0-LRFD 12-1-19.BEN Original date and time of creating this file: December 1, 2019 PROGRAM MODE: Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Page 1 of I License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19AD4 SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv 120.0 Ib/ft 3 Equivalent internal angle of friction, 28.00 Equivalent cohesion, c qw. 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls PreuM Dale?we' Son Dec0120:57:052019 Rivanna Village - Ph2 - Albemarle Co, VA C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19a INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivanna Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19a INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19B INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 16.00 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 14.00 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16Er-AASWO-L D12-1-19E AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply FAE and P, ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies PAE and P, ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1A: , � b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEx 1.50 (7Pro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 2.53, factored bearing load = 3683 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.493 Eccentricity, e/L = 0.1437 CDR-overturnin = 3.15 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 14.00 3 2.08 1.97 1.966 25.461 1.432 0.1328 UX1500MSE-MD 2 2.00 14.00 3 1.85 1.75 1.748 20.224 1.539 0.1125 UX1500MSE-MD 3 4.00 14.00 3 1.77 1.68 1.677 15.505 1.732 0.0852 UX1500MSE-MD 4 6.00 14.00 2 1.30 1.24 1.236 14.353 1.977 0.0617 UX1400MSE-MD 5 8.00 14.00 2 1.63 1.54 1.545 13.202 2.297 0.0420 UX1400MSE-MD 6 10.00 14.00 2 2.17 2.06 2.060 12.044 2.736 0.0261 UX1400MSE-MD 7 12.00 14.00 2 3.26 3.09 3.089 10.892 3.373 0.0138 UX1400MSE-MD 8 14.00 14.00 2 5.80 5.49 5.492 8.658 4.380 0.0051 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 2.45, factored bearing load = 3749 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.526 Eccentricity, e/L = 0.1551 Fs-overturnin = 2.95 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 14.00 3 2.52 2.35 2.352 20.981 1.465 0.1433 UX1500MSE-MD 2 2.00 14.00 3 2.27 2.12 2.123 17.256 1.573 0.1212 UX1500MSE-MD 3 4.00 14.00 3 2.20 2.06 2.057 13.518 1.769 0.0915 UX1500MSE-MD 4 6.00 14.00 2 1.61 1.50 1.502 12.266 2.016 0.0661 UX1400MSE-MD 5 8.00 14.00 2 1.99 1.85 1.853 10.956 2.339 0.0448 UX1400MSE-MD 6 10.00 14.00 2 2.60 2.42 2.418 9.536 2.780 0.0277 UX1400MSE-MD 7 12.00 14.00 2 3.76 3.48 3.479 7.898 3.417 0.0145 UX1400MSE-MD 8 14.00 14.00 2 6.20 5.67 5.666 5.281 4.418 0.0053 UX1400MSE-MD Rivanna Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19aEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance- q-n 9310 9175 [lb/II'] Factored bearing load, 6v 3683.2 3749 [lb/II'] Eccentricity, e 1.15 1.25 [ft] Eccentricity, e/L 0.082 0.089 CDR calculated 2.53 2.45 Base length 14.00 14.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 30995.58 [lb/ft], L = 14.00, Unfactored e = 0.98 [ft], and Sigma = 2576.18 [lb/ft 21 Seismic: Unfactored R = 30995.58 [lb/ft], L = 14.00, Unfactored e = 1.53 [ft], and Sigma = 2831.59 [lb/ft 2] SCALE: 0 2 4 6 8 10 [ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 8 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16F-AASWO-L D12-1-19n DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.493 and CDR -seismic =1.526 # Geogrid Geogrid CDR CDR Required facing resistance Geogrid Elevation Length Static Seismic to render target: in [lb/ft] Type # Product name [ft] [ft] Rf r (Static) Rf r (Seismic) 0 (at Foundation Interface) 0.00 0.00 1 0.67 14.00 1.432 1.465 0.00 0.00 3 UX1500MSE-MD 2 2.00 14.00 1.539 1.573 0.00 0.00 3 UX1500MSE-MD 3 4.00 14.00 1.732 1.769 0.00 0.00 3 UX1500MSE-MD 4 6.00 14.00 1.977 2.016 0.00 0.00 2 UX1400MSE-MD 5 8.00 14.00 2.297 2.339 0.00 0.00 2 UX1400MSE-MD 6 10.00 14.00 2.736 2.780 0.00 0.00 2 UX1400MSE-MD 7 12.00 14.00 3.373 3.417 0.00 0.00 2 UX1400MSE-MD 8 14.00 14.00 4.380 4.418 0.00 0.00 2 UX1400MSE-MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.1437, elf, seismic = 0.1551; Overturning: CDR -static = 3.15, CDR -seismic = 2.95 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 14.00 0.1328 0.1433 3 UX150OMSE-MD 2 2.00 14.00 0.1125 0.1212 3 UX1500MSE-MD 3 4.00 14.00 0.0852 0.0915 3 UX1500MSE-MD 4 6.00 14.00 0.0617 0.0661 2 UX1400MSE-MD 5 8.00 14.00 0.0420 0.0448 2 UX1400MSE-MD 6 10.00 14.00 0.0261 0.0277 2 UX1400MSE-MD 7 12.00 14.00 0.0138 0.0145 2 UX1400MSE-MD 8 14.00 14.00 0.0051 0.0053 2 UX1400MSE-MD Rivanna Village -- -v - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-16rr-AASWO-L D12-1-19AD4 RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 0.67 1997 1015.59 298.99 N/A 1.966 N/A 2.352 UX1500MSE-MD 2 2.00 1997 1142.72 285.84 N/A 1.748 N/A 2.123 UX1500MSE-MD 3 4.00 1997 1190.79 266.06 N/A 1.677 N/A 2.057 UX1500MSE-MD 4 6.00 1226 992.33 246.28 N/A 1.236 N/A 1.502 UX1400MSE MD 5 8.00 1226 793.86 226.50 N/A 1.545 N/A 1.853 UX1400MSE-MD 6 10.00 1226 595.40 206.72 N/A 2.060 N/A 2.418 UX1400MSE-MD 7 12.00 1226 396.93 186.95 N/A 3.089 N/A 3.479 UX1400MSE-MD 8 14.00 1226 223.27 167.17 N/A 5.492 N/A 5.666 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geogrid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 0.67 1.000 1015.6 299.0 13.70 0.30 25857.8 N/A 25.461 27581.6 N/A 20.981 2 2.00 1.000 1142.7 285.8 13.09 0.91 23110.1 N/A 20.224 24650.8 N/A 17.256 3 4.00 1.000 1190.8 266.1 12.19 1.81 18462.9 N/A 15.505 19693.8 N/A 13.518 4 6.00 1.000 992.3 246.3 11.28 2.72 14243.0 N/A 14.353 15192.6 N/A 12.266 5 8.00 1.000 793.9 226.5 10.38 3.62 10480.2 N/A 13.202 11178.9 N/A 10.956 6 10.00 1.000 595.4 206.7 9.47 4.53 7170.8 N/A 12.044 7648.8 N/A 9.536 7 12.00 1.000 396.9 186.9 8.56 5.44 4323.4 N/A 10.892 4611.6 N/A 7.898 8 14.00 1.000 223.3 167.2 7.66 6.34 1933.2 N/A 8.658 2062.0 N/A 5.281 - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�..�,..m. Rivanna Village -- -v ----,�,a-.®,�,.�.7,��..7,..e..�,..�..�.a Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?we' Son Dec0120:57:052019 C'l__UtW-2212Riv Villap-Pha 2-Albe Ie Co\WSA-16rr-AASWO-L D12-1-19aEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax # Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr 00] 1 0.67 1016 1.00 0.33 2109 2219 N/A 2.08 N/A 1.97 UX150OMSE-MD 2 2.00 1143 1.00 0.33 2109 2219 N/A 1.85 N/A 1.75 UX150OMSE-MD 3 4.00 1191 1.00 0.33 2109 2219 N/A 1.77 N/A 1.68 UX150OMSE-MD 4 6.00 992 1.00 0.33 1295 1362 N/A 1.30 N/A 1.24 UX140OMSE-MD 5 8.00 794 1.00 0.33 1295 1362 N/A 1.63 N/A 1.54 UX140OMSE-MD 6 10.00 595 1.00 0.33 1295 1362 N/A 2.17 N/A 2.06 UX140OMSE-MD 7 12.00 397 1.00 0.33 1295 1362 N/A 3.26 N/A 3.09 UX140OMSE-MD 8 14.00 223 1.00 0.33 1295 1362 N/A 5.80 N/A 5.49 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax # Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [lb/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) Pb/fit] Specified Actual Specified Actual CRult CRcr DO] 1 0.67 1315 1.00 0.33 2812 2219 N/A 2.52 N/A 2.35 UX150OMSE-MD 2 2.00 1429 1.00 0.33 2812 2219 N/A 2.27 N/A 2.12 UX150OMSE-MD 3 4.00 1457 1.00 0.33 2812 2219 N/A 2.20 N/A 2.06 UX150OMSE-MD 4 6.00 1239 1.00 0.33 1727 1362 N/A 1.61 N/A 1.50 UX140OMSE-MD 5 8.00 1020 1.00 0.33 1727 1362 N/A 1.99 N/A 1.85 UX140OMSE-MD 6 10.00 802 1.00 0.33 1727 1362 N/A 2.60 N/A 2.42 UX140OMSE-MD 7 12.00 584 1.00 0.33 1727 1362 N/A 3.76 N/A 3.48 UX1400MSE-MD 8 14.00 390 1.00 0.33 1727 1362 N/A 6.20 N/A 5.67 UX140OMSE-MD Rivanna Village -- -v - Albemarle Co, VA.�...d,� - - - - ,�,�,.�.�,��...�,..�..�,..m. ---- ,�,a - .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Pre.MDMVT/ e: Son Dec012051102019 Rivanna Village - Ph2 - Albemarle Co, VA C:l__UtW-2212Riv Village-Phae2-Albemarle Co\MESA-20F-AASWO-EKED12-1-19BEN AASHTO 2007-2010 (LRFD) Rivanna Village - Ph2 - Albemarle Co, VA PROJECT IDENTIFICATION Title: Rivanna Village - Ph2 - Albemarle Co, VA ProlectNumber. RW-2212 Client: Robinson Development Designer: Michael R. Circeo, P.E. Station Number: Wall Height = 20 FT Description: MESA DOT connector - 75 yrs Design Life. Company's information: Name: Circeo Geotechnical Engineering, P.C. Street: 5956 Buckland Mill Road Roanoke, VA Telephone #: Fax #: E-Mail: 24019 (540)366-2379 mrcimeo@cox.net Original file path and name: C:\Users\Mike\Documents\Final Design\RW-2212 Rivanna Vi..... ..... 0-LRFD 12-1-19.BEN Original date and time of creating this file: December 1, 2019 PROGRAM MODE: Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. ANALYSIS of a SIMPLE STRUCTURE using GEOGRID as reinforcing material. Page 1 of I License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec I 2US I:lI jUlI C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19AD4 SOIL DATA REINFORCED SOIL Unit weight, y 130.0 Ib/ft 3 Design value of internal angle of friction, 34.00 RETAINED SOIL Unit weight, y 120.0 Ib/ft 3 Design value of internal angle of friction, 28.0 FOUNDATION SOIL (Considered as an equivalent uniform soil) Equivalent unit weight, y eawv 120.0 Ib/ft 3 Equivalent internal angle of friction, 28.00 Equivalent cohesion, c qw. 100.0 lb/ft 2 Water table does not affect bearing capacity LATERAL EARTH PRESSURE COEFFICIENTS Ka (internal stability) = 0.2827 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) Inclination of internal slip plane, W= 62.00' (see Fig. 28 in DEMO 82). Ka (external stability) = 0.3610 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) .S 4 . Y111 Bearing capacity coefficients (calculated by MSEW): Nc = 25.80 N y=16.72 SEISMICITY Maximum ground acceleration coefficient, A = 0.200 Design acceleration coefficient in Internal Stability: Kh = Am = 0.250 Design acceleration coefficient in External Stability: Kh_d = 0.070 => Kh = Am = 0.097 (Kh in External Stability is based on allowable displacement, d = 100 mm. using AASHTO 2007 equation) Kae ( Kh > 0 ) = 0.3959 Kae ( Kh = 0 ) = 0.3318 A Kae = 0.0641 Seismic soil-geogrid friction coefficient, F• is 80.0% of its specified static value. Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Page 2 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls PreuM Dale?ime' Son Dec II 203 I:102019 Rivanna Village - Ph2 - Albemarle Co, VA C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19a INPUT DATA: Geogrids (Analysis) D A T A Geogrid Geogrid Geogrid Geogrid Geogrid type #1 type #2 type #3 type #4 type #5 Tult [lb/ft] 3970.0 4796.0 7811.0 9866.0 11990.0 Durability reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Installation -damage reduction factor, RFid 1.25 1.25 1.25 1.25 1.25 Creep reduction factor, RFc 2.56 2.56 2.56 2.56 2.56 CDR for strength N/A N/A N/A N/A N/A Coverage ratio, Rc 1.000 1.000 1.000 1.000 1.000 Friction angle along geogrid-soil interface, p 28.35 28.35 28.35 28.35 28.35 Pullout resistance factor, F• 0.80 tangy 0.80 tan+ 0.80 tan+ 0.80 tan+ 0.80 tangy Scale -effect correction factor, a 1.0 1.0 1.0 1.0 1.0 Variation of Lateral Earth Pressure Coefficient With Depth Z K/Ka 0.0 1.0 K/Ka 2.0 3.0 0 ft 1.00 0 3.3 ft 1.00 Z Iftl 6.6 ft 1.00 6.6 9.8 It 1.00 9.8 13.1 ft 1.00 16.4 ft 1.00 16.4 19.7 ft 1.00 26.2 32.8 - Albemarle Co, VA.�...d,�- Rivanna Village -- -v - - - ,�,�,.�.�,��...�,..�. - ,..�...din- - - - .®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 3 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec I 2US I:lI jUlI C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19a INPUT DATA: Facia and Connection (according to revised Demo 82) (Analysis) FACIA type: Facing enabling frictional connection of reinforcement (e.g., modular concrete blocks, gabions) Depth/height of block is 0.92/0.67 fl. Horizontal distance to Center of Gravity of block is 0.41 ft. Average unit weight of block is yf = 82.00 Ib/ft 3 Z / Hd To -static / Tmax or To -seismic / Tmd 0.00 1.00 0.25 1.00 0.50 1.00 0.75 1.00 1.00 1.00 Top of wall Z / Hd 0.00 0.25 0.50 0.75 1.00 1.00 0.90 0.80 0.70 0.60 0.50 To -static / Tmax or To -seismic / Trod Geogrid Type #1 Geogrid Type #2 Geogrid Type #3 Geogrid Type #4 Geogrid Type #5 a (1) CRult t�1 a CRult a CRult a CRult a CRult 0.0 0.00 936.0 1.00 936.0 1.00 936.0 1.00 936.0 1.00 Geogrid Type #131 Geogrid Type #2 Geogrid Type #3 a CRcr a CRcr a CRcr 0.0 0.00 936.0 0.33 936.0 0.33 (1) a = Confining stress in between stacked blocks [lb/ft 2] (2) CRult = Tc-ult / Tult (3) CRcr = Tcre / Tult Geogrid Type #4 a CRcr 936.0 0.33 In seismic analysis, long term strength is reduced to 100% of its static value Geogrid Type #5 a CRcr 936.0 0.31 D A T A (for connection only) Type #1 Type #2 Type 43 Type #4 Type #5 Product Name UX1100MSE.. UX1400MSE.. UX1500MSE.. UX1600MSE.. UX1700MSE.. Connection strength reduction factor, RFd 1.10 1.10 1.10 1.10 1.10 Creep reduction factor, RFc N/A N/A N/A N/A N/A Rivanna Village - Ph2 - Albemarle Co, VA Page 4 of I 1 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec I 2US I:lI jUlI C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19B INPUT DATA: Geometry and Surcharge loads (of a SIMPLE STRUCTURE) Design height, Hd 20.00 [ft] { Embedded depth is E = 2.00 ft, and height above top of finished bottom grade is H = 18.00 ft } Batter, to 4.5 [deg] Backslope, R 0.0 [deg] Backslope rise 0.0 [ft] Broken back equivalent angle, I = 0.00° (see Fig. 25 in DEMO 82) UNIFORM SURCHARGE Uniformly distributed dead load is 0.0 [lb/ft 2], and live load is 250.0 [lb/ft 2] NOTE: Tmax is NOT affected by live loads. ANALYZED REINFORCEMENT LAYOUT: SCALE: 0246 8 10[ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 5 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec I 2US I:lI jUlI C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20Er-AASWO-L D12-1-19E AASHTO 2007-2010 (LRFD) Input Data INTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2: YPEV 1.35 Load factor for earthquake loads, EQ, from Table 3.4.1-1: 7Pm 1.00 Load factor for live load surchrge, LS, from Figure C11.5.5-3(b): YPLs 1.75 (Same as in External Stability). Load factor for dead load surchrge, ES: YPES 1.50 (Same as in External Stability). Resistance factor for reinforcement tension from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement tension in connectors from Table 11.5.6-1: Static Geogrid: 0.90 Resistance factor for reinforcement pullout from Table 11.5.6-1: 0.90 EXTERNAL STABILITY Load factor for vertical earth pressure, EV, from Table 3.4.1-2 and Figure C 11.5.5-2: Static Sliding and Eccentricity YPEV 1.00 Bearing Capacity YPEV 1.35 Load factor of active lateral earth pressure, EH, from Table 3.4.1-2 and Figure C11.5.5-2: Load factor of active lateral earth pressure during earthquake (does not multiply FAE and P, ): Load factor for earthquake loads, EQ, from Table 3.4.1-1 (multiplies PAE and P, ): Resistance factor for shear resistance along common interfaces from Table 11.5.6-1 Reinforced Soil and Foundation s r Reinforced Soil and Reinforcement 0, Resistance factor forbearing capacity of shallow foundation from Table 11.5.6-1A: , � b Rivanna Village - Ph2 - Albemarle Co, VA Copyright 0 1998-2019 ADAMA Engineering, Inc. Static 1.00 1.00 Static 0.65 Combined static/seismic 1.20 Combined static/seismic 1.20 1.20 Combined Static/Seismic YPEQ 1.00 YPEQ 1.35 YPEx 1.50 (7Pro )EQ 1.10 Y PEQ 1.00 Combined Static/Seismic 1.00 1.00 Combined Static/Seismic 0.65 Page 6 of 11 License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec I 2US I:lI jUlI C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19BEN ANALYSIS: CALCULATED FACTORS (Static conditions) Bearing capacity, CDR = 2.42, factored bearing load = 4501 Ib/ft'. Foundation Interface: Direct slidin CDR = 1.493 Eccentricity, e/L = 0.1422 CDR -overturning 3.17 GEOGRID CONNECTION CDR CDR Geogrid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 17.00 3 1.65 1.56 1.560 30.890 1.449 0.1333 UX1500MSE-MD 2 2.00 17.00 3 1.43 1.36 1.356 24.692 1.539 0.1164 UX1500MSE-MD 3 4.00 17.00 3 1.33 1.26 1.258 19.325 1.694 0.0933 UX1500MSE-MD 4 6.00 17.00 3 1.52 1.44 1.438 18.172 1.883 0.0728 UX1500MSE-MD 5 8.00 17.00 3 1.77 1.68 1.677 17.019 2.116 0.0549 UX1500MSE-MD 6 10.00 17.00 2 1.30 1.24 1.236 15.866 2.412 0.0395 UX1400MSE-MD 7 12.00 17.00 2 1.63 1.54 1.545 14.713 2.801 0.0267 UX1400MSE-MD 8 14.00 17.00 2 2.17 2.06 2.060 13.559 3.332 0.0164 UX1400MSE-MD 9 16.00 17.00 2 3.26 3.09 3.089 12.406 4.104 0.0085 UX1400MSE-MD 10 18.00 17.00 2 5.80 5.49 5.492 10.003 5.324 0.0031 UX1400MSE-MD ANALYSIS: CALCULATED FACTORS (Seismic conditions) Bearing capacity, CDR = 2.34, factored bearing load = 4589 Ib/ft". Foundation Interface: Direct slidin CDR = 1.528 Eccentricity,e/L = 0.1543 Fs-overtumin = 2.95 GEOGRID CONNECTION CDR CDR GeoWid Pullout Direct Eccentricity Product # Elevation Length Type [connection [geogrid strength resistance sliding e/L name [ft] [ft] # strength] strength] CDR CDR CDR 1 0.67 17.00 3 2.00 1.86 1.863 25.389 1.484 0.1446 UX1500MSE-MD 2 2.00 17.00 3 1.76 1.65 1.647 21.079 1.574 0.1262 UX1500MSE-MD 3 4.00 17.00 3 1.65 1.55 1.545 16.917 1.733 0.1010 UX1500MSE-MD 4 6.00 17.00 3 1.88 1.76 1.756 15.698 1.924 0.0786 UX1500MSE-MD 5 8.00 17.00 3 2.18 2.03 2.033 14.447 2.161 0.0592 UX1500MSE-MD 6 10.00 17.00 2 1.59 1.48 1.482 13.150 2.460 0.0425 UX1400MSE-MD 7 12.00 17.00 2 1.96 1.82 1.823 11.776 2.852 0.0286 UX1400MSE-MD 8 14.00 17.00 2 2.56 2.37 2.368 10.266 3.386 0.0175 UX1400MSE-MD 9 16.00 17.00 2 3.67 3.38 3.379 8.477 4.158 0.0090 UX1400MSE-MD 10 18.00 17.00 2 5.95 5.41 5.410 5.601 5.370 0.0032 UX1400MSE-MD Rivanna Village -- - Albemarle Co, VA -v .�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 7 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec I 2US I:lI jUlI C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19aEN BEARING CAPACITY for GIVEN LAYOUT STATIC SEISMIC UNITS (Water table does not affect bearing capacity) Factored bearing resistance- q-n 10899 10721 [lb/ft'] Factored bearing load, 6v 4500.5 4589 []b/ft'] Eccentricity, e 1.43 1.56 [ft] Eccentricity, e/L 0.084 0.092 CDR calculated 2.42 2.34 Base length 17.00 17.00 [ft] Unfactored applied bearing pressure = (Unfactored R) / [ L - 2 • (Unfactored e) ] = Static: Unfactored R = 46010.22 [lb/ft], L = 17.00, Unfactored e = 1.23 [ft], and Sigma = 3163.16 [lb/ft 21 Seismic: Unfactored R = 46010.22 [lb/ft], L = 17.00, Unfactored e = 1.94 [ft], and Sigma = 3507.48 [lb/ft 2] SCALE: 0246810[ft] Rivanna Village - Ph2 - Albemarle Co, VA Page 8 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec II 2US I:102019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19D DIRECT SLIDING for GIVEN LAYOUT (for GEOGRID reinforcements) Along reinforced and foundation soils interface: CDR -static = 1.493 and CDR -seismic =1.528 # Geogrid Geogrid CDR CDR Required facing resistance Geogrid Elevation Length Static Seismic to render target: in [lb/II] Type # Product name [ft] [ft] Rf r (Static) Rf r (Seismic) 0 (at Foundation Interface) 0.00 0.00 1 0.67 17.00 1.449 1.484 0.00 0.00 3 UX1500MSE-MD 2 2.00 17.00 1.539 1.574 0.00 0.00 3 UX1500MSE-MD 3 4.00 17.00 1.694 1.733 0.00 0.00 3 UX1500MSE-MD 4 6.00 17.00 1.883 1.924 0.00 0.00 3 UX1500MSE-MD 5 8.00 17.00 2.116 2.161 0.00 0.00 3 UX1500MSE-MD 6 10.00 17.00 2.412 2.460 0.00 0.00 2 UX1400MSE-MD 7 12.00 17.00 2.801 2.852 0.00 0.00 2 UX1400MSE-MD 8 14.00 17.00 3.332 3.386 0.00 0.00 2 UX1400MSE-MD 9 16.00 17.00 4.104 4.158 0.00 0.00 2 UX1400MSE-MD 10 18.00 17.00 5.324 5.370 0.00 0.00 2 UX1400MSE-MD ECCENTRICITY for GIVEN LAYOUT At interface with foundation: e/L static = 0.1422, e/L seismic = 0.1543; Overturning: CDR -static = 3.17, CDR -seismic = 2.95 # Geogrid Geogrid e / L e / L Geogrid Elevation Length Static Seismic Type # Product name [ft] [ft] 1 0.67 17.00 0.1333 0.1446 3 UX1500MSE-MD 2 2.00 17.00 0.1164 0.1262 3 UX1500MSE-MD 3 4.00 17.00 0.0933 0.1010 3 UX1500MSE-MD 4 6.00 17.00 0.0728 0.0786 3 UX1500MSE-MD 5 8.00 17.00 0.0549 0.0592 3 UX1500MSE-MD 6 10.00 17.00 0.0395 0.0425 2 UX1400MSE-MD 7 12.00 17.00 0.0267 0.0286 2 UX1400MSE-MD 8 14.00 17.00 0.0164 0.0175 2 UX1400MSE-MD 9 16.00 17.00 0.0085 0.0090 2 UX1400MSE-MD 10 18.00 17.00 0.0031 0.0032 2 UX1400MSE-MD Rivanna Village -- -v - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�.-,..�. ----,�,a-.®,�,.�.7,��...�,..Q..�,..�..�.a�.Page 9 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Son Dec II 2US I:102019 C'l__UtW-22121liv Villap-Pha 2-Albe Ie Co\WSA-20rr-AASWO-L D12-1-19AD4 RESULTS for STRENGTH Live Load NOT included in calculating Tmax # Geoprid Tavailable Tmax Trail Specified Actual Specified Actual Elevation [lb/ft] [lb/ft] [lb/ft] minimum calculated minimum calculated Product [ft] CDR CDR CDR CDR name static static seismic seismic 1 0.67 1997 1280.55 381.33 N/A 1.560 N/A 1.863 UX1500MSE-MD 2 2.00 1997 1473.17 367.57 N/A 1.356 N/A 1.647 UX1500MSE-MD 3 4.00 1997 1587.73 346.88 N/A 1.258 N/A 1.545 UX1500MSE-MD 4 6.00 1997 1389.26 326.19 N/A 1.438 N/A 1.756 UX1500MSE-MD 5 8.00 1997 1190.79 305.49 N/A 1.677 N/A 2.033 UX1500MSE-MD 6 10.00 1226 992.33 284.80 N/A 1.236 N/A 1.482 UX1400MSE MD 7 12.00 1226 793.86 264.11 N/A 1.545 N/A 1.823 UX1400MSE-MD 8 14.00 1226 595.40 243.42 N/A 2.060 N/A 2.368 UX1400MSE MD 9 16.00 1226 396.93 222.72 N/A 3.089 N/A 3.379 UX1400MSE MD 10 18.00 1226 223.27 202.03 N/A 5.492 N/A 5.410 UX1400MSE-MD RESULTS for PULLOUT Live Load NOT included in calculating Tmax NOTE: Live load is not included in calculating the overburden pressure used to assess pullout resistance. # Geoprid Coverage Tmax Tmd Le La Avail.Static Specified Actual Avail.Seism. Specified Actual Elevation Ratio [lb/ft] [lb/ft] [ft] [ft] Pullout, Pr Static Static Pullout, Pr Seismic Seismic [ft] (see NOTE) [lb/ft] CDR CDR [lb/ft] CDR CDR 1 0.67 1.000 1280.5 381.3 16.70 0.30 39556.0 N/A 30.890 42193.1 N/A 25.389 2 2.00 1.000 1473.2 367.6 16.09 0.91 36375.5 N/A 24.692 38800.5 N/A 21.079 3 4.00 1.000 1587.7 346.9 15.19 1.81 30683.1 N/A 19.325 32728.6 N/A 16.917 4 6.00 1.000 1389.3 326.2 14.28 2.72 25245.7 N/A 18.172 26928.7 N/A 15.698 5 8.00 1.000 1190.8 305.5 13.38 3.62 20266.0 N/A 17.019 21617.1 N/A 14.447 6 10.00 1.000 992.3 284.8 12.47 4.53 15744.0 N/A 15.866 16793.6 N/A 13.150 7 12.00 1.000 793.9 264.1 11.56 5.44 11679.8 N/A 14.713 12458.4 N/A 11.776 8 14.00 1.000 595.4 243.4 10.66 6.34 8073.3 N/A 13.559 8611.5 N/A 10.266 9 16.00 1.000 396.9 222.7 9.75 7.25 4924.4 N/A 12.406 5252.7 N/A 8.477 10 18.00 1.000 223.3 202.0 8.85 8.15 2233.4 N/A 10.003 2382.3 N/A 5.601 Rivanna Village -- -v - Albemarle Co, VA.�...d,�----,�,�,.�.�,��...�,..�..�,..m. ----,�,a-.®,�,.�.7,��..7,..e..�,..�..�.a Page 10 of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 MSEW -- Mechanically Stabilized Earth Walls Rivanna Village - Ph2 - Albemarle Co, VA PreuM Dale?ime' Sun Dec I 20:S I:m 2019 C'l__UtW-2212aiv Villap-Pha 2-Albe Ie Co\WSA-20F-AASWO-L D12-1-19aEN RESULTS for CONNECTION (static conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connecton Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) [Ib/ft] Specified Actual Specified Actual CRult CRcr 00] 1 0.67 1281 1.00 0.33 2109 2219 N/A 1.65 N/A 1.56 UX150OMSF-MD 2 2.00 1473 1.00 0.33 2109 2219 N/A 1.43 N/A 1.36 UX150OMSE-MD 3 4.00 1588 1.00 0.33 2109 2219 N/A 1.33 N/A 1.26 UX150OMSE-MD 4 6.00 1389 1.00 0.33 2109 2219 N/A 1.52 N/A 1.44 UX150OMSE-MD 5 8.00 1191 1.00 0.33 2109 2219 N/A 1.77 N/A 1.68 UX150OMSE-MD 6 10.00 992 1.00 0.33 1295 1362 N/A 1.30 N/A 1.24 UX140OMSE-MD 7 12.00 794 1.00 0.33 1295 1362 N/A 1.63 N/A 1.54 UX140OMSE-MD 8 14.00 595 1.00 0.33 1295 1362 N/A 2.17 N/A 2.06 UX140OMSE-MD 9 16.00 397 1.00 0.33 1295 1362 N/A 3.26 N/A 3.09 UX140OMSE-MD 10 18.00 223 1.00 0.33 1295 1362 N/A 5.80 N/A 5.49 UX140OMSE-MD RESULTS for CONNECTION (seismic conditions) Live Load NOT included in calculating Tmax p Geogrid Connection Reduction Reduction Available Available CDR CDR Elevation force, To factor for factor for connection Geogrid connection Geogrid Product [ft] [Il/ft] connection connection strength strength, strength strength name (short-term (long-term Tavailable strength) strength) Pb/fit] Specified Actual Specified Actual CRult CRcr 001 1 0.67 1662 1.00 0.33 2812 2219 N/A 2.00 N/A 1.86 UX150OMSE-MD 2 2.00 1841 1.00 0.33 2812 2219 N/A 1.76 N/A 1.65 UX150OMSE-MD 3 4.00 1935 1.00 0.33 2812 2219 N/A 1.65 N/A 1.55 UX150OMSE-MD 4 6.00 1715 1.00 0.33 2812 2219 N/A 1.88 N/A 1.76 UX150OMSE-MD 5 8.00 1496 1.00 0.33 2812 2219 N/A 2.18 N/A 2.03 UX150OMSE-MD 6 10.00 1277 1.00 0.33 1727 1362 N/A 1.59 N/A 1.48 UX140OMSE-MD 7 12.00 1058 1.00 0.33 1727 1362 N/A 1.96 N/A 1.82 UX140OMSE-MD 8 14.00 839 1.00 0.33 1727 1362 N/A 2.56 N/A 2.37 UX140OMSE-MD 9 16.00 620 1.00 0.33 1727 1362 N/A 3.67 N/A 3.38 UX140OMSE-MD 10 18.00 425 1.00 0.33 1727 1362 N/A 5.95 N/A 5.41 UX140OMSE-MD - Albemarle Co, VA.�...d,� Rivanna Village -- -v - - - - ,�,�,.�.�,��...�,..�..�,..m. ---- ,�,a - .®,�,.�.7,��..7,..e..�,..�..�.a Page l l of 11 Copyright 0 1998-2019 ADAMA Engineering, Inc. License number MCSW-301415 Harrisonburg Office 1356 N. Main Street Harrisonburg, VA 22802 Phone:540-434-0400 Fax:540-434-0447 June 17, 2020 Mr. Timothy S. Culpepper, VP Robinson Development Group 150 W. Main Street Norfolk, VA 23510 VE Viola Engineering, PC RE: Updated Bridge and Retaining Wall Design Parameters Rivanna Village - Phase 2 Richmond Road, Albemarle County, VA Project No: PTL-172379 Mr. Culpepper: Winchester Office 402 Bufilick Road Winchester, VA 22602 Phone: 540-313-4270 Fax:540-434-0447 We understand that design work has been completed for bridge and retaining wall structures for the referenced project above. Bridge structures designed by Contech Engineered Solutions LLC and CBC Engineers and retaining wall structures have been submitted and reviewed by personnel at the VDOT Central Office. We provide the following updates to the Report of Geotechnical Investigation and subsequent updates as it pertains to foundation design comments received. All design recommendations and construction requirements given in the original report shall be utilized unless altered herein. We expect that bridge foundations will bear on undisturbed weathered bedrock of uniform support characteristics. Based on planned site grading, retaining walls will bear predominantly in residual site soils of reduced support strength. Shallow spread footings may be used for support of the bridge abutments, wingwalls, and retaining walls. Further, shallow bridge foundations can be designed with a factored resistance of 6,750 psf (3.375 tsf) when bearing on dense weathered rock (N60> 40). It is recommended that retaining walls, bearing on approved residual soils, be designed with a factored resistance of 3,375 psf (1.688 tsf). A resistance factor of 0.45 was utilized to determine factored resistance values in accordance with Table 10.5.5.2.2-1 of the AASHTO LRFD Design Specifications. We recommend that a resistance factor of 0.85 be used for sliding between bearing strata and planned foundations. A resistance factor of 0.50 may be used for passive soil resistance. Retaining walls and ancillary structures residing outside of the VDOTRight-of-Way may be designed employing Allow Strength Design (ASD) methodology utilizing a net allowable foundainon bearing pressure of 2,500psf. Bearing resistance for bridge foundations and retaining walls of 15,000 psf, and 7,500 psf may be used for the extreme limit states when bearing on dense weathered rock. A resistance factor ((p) of 1.0 is used to determine the resistance for extreme limit states. The factored resistance values, previously mentioned, may also be used for service limit state analysis. Estimated highest foundation bearing elevations for bridge abutments, and wing walls are presented in Table 1.0 on the following page. A minimum footing depth of three (3) feet shall be maintained in accordance with latest revisions of the VDOT Modifications to the AASHTO LRFD Bridge Design Specifications. GEOTECHNICAL - GEOPHYSICAL A ENvmONMENTAL - MATERIALS AA ACCREDITED Updated Bridge and Retaining Wall Design Parameters Rivanna Village - Phase 2, Albemarle County, VA June 17, 2020 Page 2 Table 1.0 Estimated Highest Bridge Foundation Bearing Elevations Boring Structure Structure Roadway Ground SPT Factored Bearing Bearing Number Type Location (Site Location) Elevation Bearing Elevation Depth (ft) (Nco) (psf) (ft) from Ground ft B-07a Bridge Foundation East Abutment Lazy Branch Lane 349.2 40 6750 346 3.2 B-07b 348.9 40 6750 346 2.9 B-07c Bridge Foundation West Abutment Lazy Branch Lane 349.1 40 6750 346 3.1 B-07d 348.7 40 6750 346 2.7 B-08a Bridge Foundation West Abutment Terrapin Trace 362 40 6750 346 16 B-08b 360.2 40 6750 346 14.2 B-08c Bridge ou Fndation East Abutment Terrapin Trace 362 40 6750 346 16 B-08d 360.4 40 6750 346 14.4 It is our understanding that scour analyses have been conducted by others for the proposed bridge structures. Continuous foundations shall be designed with a minimum width of two (2) feet to prevent localized shear failure. Incorporating these foundation parameters for this project and good construction practices, we expect settlement will be less than 1 inch with differential settlement no greater than 0.5 inches based on vertical foundation loading resulting in bearing pressures equal to or less than specified in this letter. Foundation excavations and subgrades should be observed and approved by the GER prior to placement of concrete or backfrll materials to ascertain that footings are placed on suitable bearing materials as recommended herein. Disturbance of footing subgrades by exposure to water seepage or weather conditions should be avoided. Any existing fill, disturbed, frozen, or soft subgrade soils should be removed prior to placing footing concrete. Foundation elevations which are undercut due to accidental over excavation or unsuitable bearing soils shall be backfilled with VDOT A3 concrete to design bearing elevations. Compacted dense aggregate comparable to VDOT 21A may be used as backfill material if approved by the GER upon review of site and foundation bearing conditions. Good site management practices shall be employed to prevent water from entering foundation trenches at all times. Furthermore, foundation trenches shall not be opened unless concrete or backfrll materials can be placed immediately thereafter to prevent the possibility of precipitation or water from entering and softening the exposed bearing surfaces. Ephemeral stream water may infiltrate excavations depending on the time of construction. As such, provisions shall be made to ensure the excavation is maintained in a dry state until backfrll is placed. The finished subgrade should be graded to promote positive drainage accordingly. All construction activities shall be conducted in accordance with the latest revisions of the VDOT Road and Bridge Specifications as required by approved design documents. Updated design parameters and construction recommendations have been prepared to aid in the evaluation of the suitability for the planned structures. Our scope is limited to the specific project and location described, and the project description represents our understanding of the significant aspects relevant to soil and foundation characteristics. Subsurface conditions may vary from those encountered at the test locations. GEOTECHNICAL • GEOPHYSICAL A ENvmONMENTAL • MATERIALS AA ACCREDITED Updated Bridge and Retaining Wall Design Parameters Rivanna Village - Phase 2, Albemarle County, VA June 17, 2020 Page 3 VE The logs are intended to only represent the conditions at the test boring locations where the sampling occurred. Classification of evaluated soils are based on recognized standards. The interpretations and recommendations in this report are based solely on the information available at the time this report was prepared. If the location or design of the structure is altered, the conclusions and recommendations presented herein should not be considered valid unless we have been given the opportunity to review the changes. We recommend that we be provided the opportunity to review the final plans so it can be determined if revisions to the recommendations contained herein are warranted. If you have any questions with regard to the information and recommendations presented herein, or if we can be of further assistance, please do not hesitate to contact us. Respectfully, •Z1%�H" ^ �F (�10 06/17/2020 TIMOTHY P. VIOLAATimothy P. Viola, P.E. Lic. No. 0402056657 Project Engineer Attachments: Updated Test Boring Location Plans and Logs GEOTECHNICAL • GEOPHYSICAL A ENvmONMENTAL • MATERIALS AA ACCREDITED A 77D 1DUNr! A 7101WOUII A 71DIVIDUrr A4107VLOUH A 110IU4UV11 Richmond Road, Albemarle County, Virginia 352 rt �L•; n I-44 C \ r VEPC Project No: PTL-172379 �-38 o Date of Exploration: 6120118 - 7112118 J; u EPSG:2925 NAD83(HARN) / Virginia South (ftUS) 39-- - - - - - - - - Paper Size: 11 "x17" 450 dpi g,0•rt _ Lazy Branch Lane Civil Sheet: 32 - - _ _ _ : ----_ _ n G 40 Contech Bridge Single Radius Steel Ci-41 �. Arch Span on Concrete Strip Footing ,• I. i ;,.Y Span: 28.83 ft Rise: 7.42 ft Length: 90.25 ft ' Lazy Branch Lane Civil Sheet: 32 I-Invert/Stream Bed In: 349.9 ft Precast Concrete Single Box Culvert S-invert/Stream Bed Out: 348 ft 3 ' Span: 8 ft Rise: 4 ft Length: 80 ft! '-InvertlStream Bed In: 349 ft I- -- '-Invert/Stream Bed Out: 348 ft 1 352.R \ ,ScabLF • \- •LA'.C4�.1� S p.35Lq 44 F-11 5" _ 1-2 r 5 Y> kA " I G: sy SIGHT /1 \�3464t ,x r- "'� LINES, - e�P1c, I� , P W��TY TYP. ' q�� 7 / J 34 Zi C i J- 5 v00 /Sr9 ^p�'N• C \ ~x �d Pfir 6. - 6/ M � I I � I- !` 1 (I J-3 I Y � 1 " - e V' n > 3 S 1 .ft 60 0 60 120 ft 1\ Background obtained from OpenStreetMap. Site plans prepared by Alan Franklin PE, LLC (4/26/18). Boring locations, elevation profile, and sanitary sewer profile provided by Blossom Scale: 1 = 720 or tin it 601t Rotation: 0 deg. clockwise Consulting and Engineering, Inc (11/3/17). Locations and elevations are approximate. X 11518920 It X 11519040 ft X 11519160 ft X 11519280 ft X 11519400 ft Legend Borings Auger Probe Test Boring X Notes Atlas Grid Future Sanitary Sewer Station No. / 100 ft i 10 ft Future Sewer Profile - B Existing Contour - 10 ft Contour 1 ft Contour Elevation Grid Existing Topo 0 328 ft Q 340 ft 0 352 ft 0 364 ft 0 376 ft 0 388 ft - 400 ft yieVIOLA ENGINEERING, PC Geowchoical • Geophysical • Environmental • Materials WinrheshrOmu:e: Harrisonburg Office: 402 R dick Road, Winchester, VA 22602 1356 N. Main Street, Ha tonbwg VA 22802 01540-31342701 Fax: 540434- 17 Office 540434-04001 F. 540434-0 7 Test Boring Location Plan Sheet: 3 of 11 Rivanna Village Phase 2 (Blocks F, G, H, I, & J) b �-' Overview Scale: 1 = 12000 or 1 in = 1000ftia r •,., 31 ooa %o ` a_ Q •u. ; I -- - Name Elevation Description Inv/Bed Drill Date Condition Termination B-07a 349.16 ft Bridge Foundation -0.67 ft 06/26/18 Full Depth 25.5 ft B-07b 348.89 ft Bridge Foundation -0.94 ft 07/05/18 Full Depth 25.5 ft B-07c 349.05 ft Bridge Foundation -0.78 ft 06/26/18 Full Depth 20 ft B-07d 348.73 ft Bridge Foundation -1.1 ft 07/05/18 Full Depth 25.5 ft B-07e 351.71 ft Retaining Wall 1.88 ft 06/26/18 Full Depth 15.5 ft B-07f 351.25 ft Retaining Wall 1.42 ft 06/25/18 Full Depth 15.5 ft B-07g 350.98 ft Retainin Wall 1.15 ft 07/05/18 Full Depth 15.5 ft B-07h 1 349.44 ft I Retaining Wall -0.39 ft 07/03/18 1 Full Depth 15.5 ft B-10a 352 ft Box Culvert 3.5 ft 07/03/18 Full Depth 10.5 ft B-10b 348.11 ft Box Culvert -0.39 ft 07/03/18 Full Depth 10.5 ft B-10c 354.25 ft Retaining Wall 5.75 ft 07/03/18 Full Depth 10.5 ft B-10d 352.21 ft Retaining Wall 3.71 ft 07/05/18 Full Depth 10.5 ft B-10e 352.27 ft Retaining Wall 3.77 ft 07/03/18 Full Depth 10.5 ft B-10f 350.75 ft Retaining Wall 2.25 ft 07/05/18 Full Depth 10.5 ft AP-36 351.17 ft -64 ft N MH B-8 07/12/18 Full Depth 8 ft AP-37 351.66 ft Adjacent MH Big 07/12/18 Full Depth 8 ft AP-33 351.99 ft -75 ft NW MH B-7 07/12/18 Full Depth I loft AP-34 350.97 ft -128 ft NW MH B-7 07/12/18 Full Depth 8 ft AP-35 349.58 ft Adjacent MH B-8 07/12/18 Full Depth 7 ft Inv/Bed: Depth to invert or stream bed from existing grade. Negative value indicate boring below Inv/Bed elevation. Viola Engineering, PC BORING NUMBER B-07a PAGE 1 OF 1 VE 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 6126118 COMPLETED 6IM18 GROUND ELEVATION 3492 ft HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889698.3 EAS71NG 11519274.2 DRILLING METHOD 2 1/4 HSA GROUND WATER LEVELS: LOGGED BY CLA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Qc W` w o_Oa= <� C7 W` 0 MATERIAL DESCRIPTION w �� a5 2Z < e >d O� U L pjQ m0> UZ Z wa wm �"' 0 w ze m ♦ SPT N60 VALUE 15 30 45 60 PL LL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 = a TOPSOIL layer: 6" 7S 63 1-2-2-2 6 • RESIDUUM: orange brown, SILTY GRAVEL WITH SAND, loose, moist, (GM) layer: 4.5' SS 2-2-3-3 345 PIC- 0 5 V SS 2$-19-21 aiL dense, dry, weathered shale, vertically bedded, (SM) SS 100 16-2g-50 layer: 20.5' >60 » SS 100 50 340 10 5 SS 100 50 >60 >> 6 335 15 SS 100 50 >60 » 7 330 .. 20 SS 100 50 >> >60 8 325 25 SS 9 100 50 >60 >> Bottom of borehole at 25.5' bgs Backfilled with auger cuttings. Viola Engineering, PC BORING NUMBER B-07b PAGE 1 OF 1 VE 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 715118 COMPLETED 715/18 GROUND ELEVATION 348.9 ft HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889666.3 EAS71NG 11519265.2 DRILLING METHOD 2 1/4 HSA GROUND WATER LEVELS: LOGGED BY CtA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Q c W` w o_ O <� C7 a= W` 0 MATERIAL DESCRIPTION w CO a5 2Z < e LUO O� U L p j Q MO UZ Z wa w m �"' a w m ZO m ♦ SPT N60 VALUE 15 30 45 60 PL LL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 7777 o PSOIL layer: 6" 1 75 2-2-4-4 9 �• RESIDUUM: orange brown, SILTY GRAVEL WITH SAND, loose to medium dense, moist, (GM) layer: 4.5' 345 0 5 2 (8) 14 X SS 3 83 4-4-5-5 (9) RESIDUUM: orange brown, SILTY SAND, laminated, moist, relic rock structure, (SM) layer: 2' QQ RESIDUUM. purple brown, SILTY SAND, laminated, very 4 1VV (28) dense, dry, weathered shale, vertically bedded, (SM) SS 5 78 17-38-50 (�) 340 _.: layer: 18.5' >60 • >> 10 SS 100 50 >60 >> 6 335 15 SS 100 50 >60 » 7 330 20 SS 100 50 >> >60 8 325 :. 25 SS 9 100 50 >60 >> Bottom of borehole at 25.5' bgs Backfilled with auger cuttings. Viola Engineering, PC BORING NUMBER B-07C PAGE 1 OF 1 VE 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 6126118 COMPLETED 6IM18 GROUND ELEVATION 349.1 ft HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889679.2 EAS71NG 11519302.1 DRILLING METHOD 3 1/4" HSA/NQ Core GROUND WATER LEVELS: LOGGED BY CLA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Qc W` w tlpa= <� C7 W` 0 MATERIAL DESCRIPTION w �� a5 2Z < e >d O� U L pjQ m0> UZ Z wa wm �"' 0 w ze m ♦ SPT N60 VALUE 15 30 45 60 PL LL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 —7777TOPSOIL layer: 12" SS 1 50 1-3-2-4 (5) 8 RESIDUUM: orange brown, SILTY GRAVEL WITH ° SAND, loose, moist, (GM) layer: 4' SS 1 1 3-2-3-5 345 5 V SS 16-15-1 gray DrOM, 51L I Y U, laminateu, Moist, relic rock structure, (SM) layer: 2' SS 4 100 11-24-4 (35) 53 • RESIDUUM: gray brown, SILTY SAND, laminated, very 340 .: 10 dense, dry, weathered shale, vertically bedded, (SM) layer: 3' >60 • >> S5S 100 38-50 Moderately weathered, thin bedded, light to dark gray, SHALE, intensely fractured, [Candler Formation] moderately hard layer: 10' RC 90 6 (0) 335 15 RC 100 7 (0) 330 20 Bottom of borehole at 20.0' bgs Backfilled with auger cuttings. Viola Engineering, PC BORING NUMBER B-07d PAGE 1 OF 1 VE 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 715118 COMPLETED 715/18 GROUND ELEVATION 348.7 ft HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889644.4 EAS71NG 11519292.3 DRILLING METHOD 2 1/4 HSA GROUND WATER LEVELS: LOGGED BY CLA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Qc W` w tlpa= <� C7 W` 0 MATERIAL DESCRIPTION w �� a5 2Z < e >d O� U L pjQ m0> UZ Z wa wm �"' 0 w ZO m ♦ SPT N60 VALUE 15 30 45 60 PL LL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 } — ° TOPSOIL layer: 9" SS 83 2-3-4-5 11 RESIDUUM: orange brown, SILTY GRAVEL WITH SAND, moist, (GM) layer: 2.3' 345 2 75 (7) 11 RESIDUUM: Orange brown, SILTY SAND, laminated, moist, relic rock structure, (SM) layer: 2' 3 75 (�) >60 RESIDUUM: purple brown, SILTY SAND, laminated, very dense, dry, weathered shale, vertically bedded, (SM) layer: 20.5' >60 • » SS 4 83 45-50 340 ": >60 >> SS 5 100 50 10 SS 100 50 >60 >> 6 335 15 SS 100 50 >60 » 7 330 20 SS 100 50 >> >60 8 325 :. 25 SS 9 100 50 >60 >> Bottom of borehole at 25.5' bgs Backfilled with auger cuttings. X 11519880 ft X 11520000 ft Richmond Road, Albemarle County, Virginia VEPC Project No: PTL-172379 c Date of Exploration: 6120118 - 7/12118 EPSG:2925 NAD83(HARN) / Virginia South (ftUS) Paper Size: 1 Vx1T 450 dpi O .. M • > ��b r a p0051 3& I SI HT I S, TY I-23 9jo \ "v4 � px I � \ N \ -14 \ 1 r o I oa > I 60 0 60 Scale: 1 = 720 or 1 in = 601t Rotation: 0 deg. clockwise X 11519880 ft X 11520000 ft X ft X 11520240 ft X 11520360 ft (SEE ATTACHED 5i 4SIGHT \ / TYP. N PROPOSED 200' ' (SEE ATTACHED V ° • � �d� 9i4 1 i 1 5P 1: 4w �I ti 1: I ry i .e _..9 �9 120 ft 1 Background obtained from OpenStreetMap. Site plans prepared by Alan Franklin PE, LLC (4/26/18). Boring locations, elevation profile, and sanitary sewer profile provided by Blossom ^P� Consulting and Engineering, Inc (11/3/17). Locations and elevations are approximate. x X 11520120 ft X 11520240 ft X 11520360 ft Terrapin Tr ce Civil Sheet: 29 Contech B dge Multiplate Sleel Arch on C crate Strip Fooling Span: 28.83 ft Rise: 7.42 ft Length: 71.5 it -invert/Stream Bed In: 362 It -InverttStream Bed Out: 360 ft r > r ml �00 Legend Borings Auger Probe Test Boring X Notes i Atlas Grid Future Sanitary Sewer Station No. \ 100 ft \ 10 ft Future Sewer Profile R R4-1 Existing Contour 10 ft Contour 1 ft Contour OpenStreetMap Line roads primary & trunk mary & trunk 500 - 1000 nor street 500 - 1000 Elevation Grid Fvi�iinn T--- MeVIOLA ENGINEERING, PC Geowchoical • Geophysical • Environmental • Materials Winebester OW.¢ : Harrisonburg Office: 402 Hufilick Road, Winchester, VA 22602 1356 N. Main Street, Havisonbwg VA 22802 Office: 540-31342701 Fax: 540434- 17 Office 54043404001 Fax: 540434-0447 Test Boring Location Plan Sheet: 9 of 11 Rivanna Village Phase 2 (Blocks F, G, H, I, & J) Overview Scale: 1 = 12000 or 1 in = 1000ft F �� °ao' '•oragOa a n, f � fie— •- - I _. c 1 _ Name Elevation Description Inv/Bed Drill Date Condition Termination B-08a 362 ft Bridge Foundation 1 ft 06/22/18 Full Depth 25.5 ft B-08c 362 ft Bridge Foundation 1 ft 06/22/18 Full Depth 25.5 ft B-08e 360.93 ft Retaining Wall -0.07 ft 06/22/18 Full Depth 15.5 ft B-08g 363.27 ft Retaining Wall 2.27 ft 06/22/18 Full Depth 15.5 ft B-08h 363.06 ft Retaining Wall 2.06 ft 06/21/18 Full Depth 25.5 ft AP-18 366.09 ft Adjacent MH R4-1 07/10/18 Full Depth 5 ft AP-19 364.45 ft Adjacent MH R-4 07/11/18 Full Depth 7 ft pInv/Bed:Depth to invert or stream bed from existing grade. Negative value indicate boring below Inv/Bed elevation. A 7797V000 IT A 71 DtwVU n A 11OLU l cu n A I JLUL4V n A nJLUJou n i r Richmond Road, Albemarle County, Virginia 1 C VEPC Project No: PTL-172379 382-h 1 : '� o Date of Exploration: 6120118 - 7/12/18 u EPSG:2925 NAD83(HARN) /Virginia South (ftUS)- aa Paper Size: 11"xl7"450 dpi 1 • �y a 0 •I-52 ---- SIGHT - INES °c� / A 1- 3 i -12 TYP o > h ;5" I r e�..� - n x 65 tea,• l A, >f 60 > K� i om I °ooQ� 67 o 1 8 n 2 1 } > 1-6 I-63 <' .Q 4 s w 9 Of c �9 c 314.R fie. v, :I / 3szn E 1- 2 D 53 , P. � rot � sy I t I Lo � r � I see.rt I c �- ---------'----------- Sheet-- ----- ,s - -- 60 0 60 120 ft Background obtained from OpenStreetMap. Site plans prepared by Alan Franklin PE, LLC .R (4/26118). Boring locations, elevation profile, and sanitary sewer profile provided by Blossom Scale: 1 = 720 or tin = 601t Rotation: 0 deg. clockwise 58 Consultinq and Enqineerinq, Inc (11/3117). Locations and elevations are approximate. ice' X 1151 g88o it X 11520000 ft X 11520120 ft X 11520240 ft X 11520360 ft Legend Borings Auger Probe Test Boring 1 Atlas Grid Future Sanitary Sewer Station No. \ 100 ft loft Future Sewer Profile T T7-1 Existing Contour — 10 ft Contour 1 It Contour OpenStreetMap Line roads 'nor street 500-1000 Elevation Grid Existing Topo - 328 ft - 340 ft 0 352 It VeGeorechnical-Geophysical-EnvimnmenUl-Makrials VIOLA ENGINEERING, P Winchester Offce: Harrisonburg Office: 4 2 Buf ick Roast, Winchester, VA 22602 1356 N. Mai. Sncct, Harzaonbu, VA 22802 Office W 31342701 Fax 540434 0417 Office 54043ao4001 Fax. 540434-0447 Test Boring Location Plan Sheet: 10 of 11 Rivanna Village Phase 2 (Blocks F, G, H, I, & J) Overview Scale: 1 = 12000 or 1 in 1000ft 0-Ajp $ 0o E O a .4. N,, • 1. 1 .L. .. .._� a-1k 1 1 1 � 1- Name Elevation Description Inv/Bed Drill Date Condition Termination B-08b 360.18 ft Bridge Foundation -0.82 ft 06/25/18 Full Depth 15 ft B-08d 360.4 It Bridge Foundation -0.6 ft 06/25/18 Full Depth 25.5 it B-08f 361.32 ft Retaining Wall 0.32 ft 06/25/18 Full Depth 15.5 It B-09a 394.02 it Borrow Area 06/20/18 Full Depth 20.5 it B-09c 382.45 ft Borrow Area 06/20/18 Full Depth 25.5 It AP-17 370.42 It Adjacent MH T-5 07/10/18 Full Depth 17 ft AP-01 394.2 It Adjacent MH T7-1 06/21/18 Full Depth 14 It AP-02 395.93 ft Between MH T7-1 & MH T-7 06/21/18 Full Depth 15 ft AP-03 393.99 It Adjacent MH T--7 06/21/18 Full Depth 1811 AP-07 383.39 ft Between MH T-7 & MH T-6 06/21/18 Full Depth 15 ft AP-08 373.77 It Adjacent MH T-6 06/21/18 Full Depth 13 ft AP-16 366.15 ft Between MH T-4 & MH T-5 07/10/18 Auger Refusal 5 ft Inv/Bed: Depth to invert or stream bed from existing grade. Negative value indicate boring below Inv/Bed elevation. Viola Engineering, PC BORING NUMBER B-08a PAGE 1 OF 1 Yff 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 6122118 COMPLETED 6=18 GROUND ELEVATION 362 It HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889829.5 EASTING 11520114.2 DRILLING METHOD 2 1/4 HSA GROUND WATER LEVELS: LOGGED BY CIA CHECKED BY TPV EAT TIME OF DRILLING 11.00 ft / Elev 351.00 ft NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Q c W` w c� o_ O �� C7 a= W ` 0 MATERIAL DESCRIPTION w CO R 2Z < e > LUO O� U L m w p j Q MO UZ Z Lu w m �"' a w m ZO m ♦ SPT N60 VALUE 15 30 45 60 Pi LIL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 360 — TOPSOIL Approximate Invert or Stream Bed Elevation. layer: 12---------- — J RESIDUUM: red brown, SILTY SAND, laminated, moist, ralic rock structure, (SR layer: 2' 7S 71 1-1-)-0 6 • SS 100 4-6-15-14 32 • 5 dense, dry, weathered shale, vertically bedded, (SAA) layer: 22.5' >60 • >> SS 100 9-50 >60 9 >> SS 100 50 355 ` 4 >60 >> SS 100 50 5 10 SS 100 50 >60 >> s 6 350 :. 15 SS 100 50 >60 : » 345 20 SS 100 50 >> >60 8 340 H25 SS 9 100 50 >60 » Bottom of borehole at 25.5' bgs Backfilled with auger cuttings. Viola Engineering, PC BORING NUMBER B-08b PAGE 1 OF 1 Yff 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 6125118 COMPLETED 6/25118 GROUND ELEVATION 360.2 ft HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889788.0 EAS71NG 11520081.5 DRILLING METHOD 3 1/4" HSA/NQ Core GROUND WATER LEVELS: LOGGED BY CIA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Q a= W` w tl O �� C7 a= W` 0 MATERIAL DESCRIPTION w CO R 2Z < e LUO O� U L p j Q m0> UZ Z wa w m �"' 0 w m ZO m ♦ SPT N60 VALUE 15 30 45 60 PL LIL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 = a TOPSOIL layer: 6" SS 67 1-13)-3 5 RESIDUUM: red orange, SILTY GRAVEL WITH SAND, loose, moist, (GM) layer: 2' 56 RESIDUUM: gray brown, SILTY SAND, laminated, very dense, dry, weathered shale, vertically bedded, (SM) 355 5 layer: 2.5' >60 • >> X SS SS Highly weathered, gray brown, SHALE, intensely fractured, [Candler Formation] moderately hard layer: 5' TR 350 10 Moderately weathered, light gray, SHALE, intensely fractured, [Candler Formation] moderately hard layer: 5' RC 100 5 (47) 15 Bottom of borehole at 15.V bgs Backfilled with auger cuttings. Viola Engineering, PC BORING NUMBER B-08C PAGE 1 OF 1 Yff 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 6122118 COMPLETED 6=18 GROUND ELEVATION 362 It HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889821.1 EAS71NG 11520125.6 DRILLING METHOD 2 1/4 HSA GROUND WATER LEVELS: LOGGED BY CIA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — p Q c W` w tl O �� C7 a= W` 0 MATERIAL DESCRIPTION w CO R 2Z < e LUO O� U L p j Q m0> UZ Z wa w m �"' 0 w m ZO m ♦ SPT N60 VALUE 15 30 45 60 PL LIL 20 40 60 80 ❑ FINES CONTENT (%) ❑ 20 40 60 80 360 7777 ' TOPSOIL layer: 6" SS 1 54 1-1-1-1 (2) 3 � • RESIDUUM: orange brown, SILTY GRAVEL WITH r t` SAND, very loose to IOOSe, moist, (GM) layer: 4.5' _ _ _I Approximate Invert or Stream Bed Elevation. layer: 0" c SS 2 100 1-2-2-2 (4) 6 • 0 5 SS 3 83 4-5-38-50 (43) >60 RESIDUUM: gray brown, SILTY SAND, laminated, very 355: dense, dry, weathered shale, vertically bedded, (SM) layer: 20.5' >60 >60 » >> SS 100 50 SS 100 50 5 10 SS 100 50 >60 » 6 350 15 SS 100 50 >60 » 345 20 SS 100 50 >> >60 8 340 25 SS 9 100 50 >60 >> Bottom of borehole at 25.5' bgs Backfilled with auger cuttings. Viola Engineering, PC BORING NUMBER B-08d PAGE 1 OF 1 Yff 1356 N. Main Street Red line denotes approximate 6750psf Harrisonburg, VA 22802 factored bearing elevation (N60: 40) CLIENT Timothy Culpepper, VP, Robinson Development Group PROJECT NAME Rivanna Village PROJECT NUMBER PTL-172379 PROJECT LOCATION Albemarle County, Virginia DATE STARTED 6125118 COMPLETED 6/25118 GROUND ELEVATION 360.4 It HOLE SIZE 6 in DRILLING CONTRACTOR Viola Engineering, PC NORTHING 3889775.1 EAS71NG 11520089.2 DRILLING METHOD 2 1/4 HSA GROUND WATER LEVELS: LOGGED BY CLA CHECKED BY TPV AT TIME OF DRILLING --- Not encountered. NOTES Locations and elevations are approximate. AT END OF DRILLING — Blue line denotes approximate foundation bearing elevation. AFTER DRILLING — w e Z ♦ SPT N60 VALUE p wa w 15 30 45 60 PL LIL Q a= tl O a= MATERIAL DESCRIPTION CO LUO p j Q w m m W` �� W` R O� m0> �"' ZO 20 40 60 80 w C7 2Z < U L UZ 0 m ❑ FINES CONTENT (%) ❑ 0 20 40 60 80 = TOPSOIL layer: 6" a 88 1-2-2-3 6 �0 RESIDUUM: red Orange, SILTY GRAVEL WITH SAND, RESIDUUM loose to medium dense, moist, (GM) layer: 3.5' SS 100 3-4-9-20 a 20 M >60 0 >> RESIDUUM: gray brown, SILTY SAND, laminated, very SS 100 16-50 355� � 5 dense, dry, weathered shale, vertically bedded, (SM) layer: 21.5' 3 >60 >> SS 100 50 4 >60 >> SS 100 50 5 10 350 >60 SS 6 100 50 >> 15 345 '. >60 SS 7 100 50 » 20 340 / >60 SS 8 100 50 >> 25 335 :: Bottom of borehole at 25.5' bgs >60 SS 9 100 50 » Backfilled with auger cuttings.