HomeMy WebLinkAboutWPO201900057 Plan - Revision 2023-02-171
1J
VIA x 30" Geoweb
Fill Front Cell w/ Topsoil
for Planting Purposes
Use Tamper Bar to
E Consolidate In Each Cell
Min 2" Setback
Per 6" Cell Height
4-FT Fence Geogrid Reinforcement (Typ.)
Refer to Wall Profile for
Geogrid Type, Geogrid
Min 6" Length (GL) and Location
I � Non -Woven Filter Fabric
WALL A S VDOT No. 57 Stone
w/ 4-FT Tall Fence Fill Rear 2 Cells w/
No. 57 Stone For Drainage
Retained Rd
Profitt Road Townhouses North / A \ \ 1 W¢ephole soll
Dctober 5, 2022
Tw so N 1 Drain to Do) ight �,�,Y
Revised Retwall Exhibit . BW Soo
0 I 40' OC Spacing (Typ)
Shimp Engineering, P.C. SiQ f? $ 8
" 1 N +VERT APPBox a95 r(2) `�" � � Extend Beyond Wall Face N wY Reinforced Fill
e d �� Granular Soil
/ Tw 509 a VVV 4 1 20 LF CUSS 1
/ \ BW 500 b ofO Compact to Min 95%
RIP -RAP OVER \ 4" Dia. Drain Pip¢
MIRAFI 140N FABRIC \ Soil Botkfill Standard Proctor
(See brain Detail)
�N
/ $ TW 504 \ GL
\N 14� ..•• O OW 494 \ Stone Leveling Pod
r °iu
mx. ra LaxEx N ""OfD � 6" Thick x 42" Wide
a[ae � �•„
N \ \ TYPICAL RETAINING WALL CROSS SECTION
ms (Not to Scale)
42 \�I..` p90
C 1 I N S
TW 519/. • / 3 iW 514 •••• �g
1 B 4 TW __ S
1 / g \
i BW/' °" \\ BW a No. 57 Stone in Rear
Topsoil in Front Cell Two (2) Cells
% i \ Tw 51;
Bw 50 Perforated (Typ.)
JNNNNNNM 6
• a � \ � \ � rNNNNNNN ,_
w\:
�,,� x
�Is 8x8x
ANrC�,�
Scale: l" = 40 FT GEOWEB 3—CELL SECTION
SITE PLAN 0 20 40 (Not to Scale)
DRAWING INDEX Geoweb Cellular Confinement Retaining Wall System ti LrH o Proffit Road Townhomes North
�y FL Albemarle County, Virginia
heet No. pNc,���� / /%�CIRCEO GEOTECH
1 cal
Site Plan Proffit Road Townhouses North 'i /�/ Circeo 5956 Buckland Mill Road
2 General Notes O GEngin Engineering,
Albemarle County Virginia U ICHAEo' 0 12 0> Engineering, P.C.PCRoanoke, Virginia 2 379
3 Geoweb Details Lc. No'
® Phone: (540) 366-2379
4-5 Wall A - 5to. 0 to Sta. 312 Site Plan Adapted From The Revised Retwall Exhibit, ° �W
Dated October 5, 2022, Prepared by Shimp Engineerning, P.C. Scale: 1" = 40 FT
�sS $G Date: 12/OS/22 Project No. RW-2891
Site Plan For Illustrative Purposes. Approx. Scale: 1" = 40 FT ZONAL
"` & Revision:I -- I Sheet 1 1 of 5
�NERAL NOTES: DESIGN PARAMETERS:
1 BUILDING CODES: 2018 VIRGINIA UNIFORM STATEWIDE BUILDING CODE (USBC)
1.0 STRIP VEGETATIVE AND ORGANIC SOIL FROM THE WALL 14.0 REINFORCED FILL SHALL CONSIST OF GRANULAR SOIL FILL AND 2018 INTERNATIONAL BUILDING CODE (IBC).
AND GEOGRID ALIGNMENT. WITH USCS SOIL TYPES GP, GW, GM, GC, SW, SP, SM OR SC 2 WALL PROFILE IS BASED ON INTERPRETATION OF THE REVISED RETWALL
2.0 BENCH CUT ALL EXCAVATED SLOPES. WITH A MINIMUM ANGLE OF INTERNAL FRICTION, OF 28 DEGREES EXHIBIT, DATED OCTOBER 5, 2022, PREPARED BY SHIMP ENGINEERING, P.C.
3.0 DO NOT EXCAVATE BEYOND EXCAVATION LINES SHOWN AS OUTLINED IN DESIGN PARAMETERS - NOTE 6. 3 WALL DETAILS SHOWN ON THIS PLAN ARE FOR PRESTO GEOWEB GW30V6
ON PLAN UNLESS DIRECTED BY THE GEOTECHNICAL LOW PLASTICITY CLAYEY SAND (SC), SILT OR CLAY (ML-CL) CAN BE USED CELLULAR SECTIONS.
ENGINEER TO REMOVE UNSUITABLE SOIL. SUBJECT TO APPROVAL BY THE GEOTECHNICAL ENGINEER. 4 ENGINEERING ANALYSIS BASED ON USE OF STRATAGRID 5GU60 GEOGRIDS.
4.0 CONTRACTOR SHALL ENSURE TEMPORARY EXCAVATIONS ARE STABLE MAXIMUM PARTICLE SHALL BE LIMITED TO 4 INCHES IN DIAMETER. OTHER COMPATIBLE GEOGRIDS MAY BE SUBSTITUTED WITH
AND PROVIDE EXCAVATION SUPPORT IF NEEDED. THE FINE FRACTION (MINUS NO. 40 SIEVE) SHALL HAVE A MAXIMUM THE APPROVAL OF THE WALL DESIGN ENGINEER.
5.0 GEOTECHNICAL ENGINEER SHALL VERIFY FOUNDATION LIQUID LIMIT (LL) OF 40 AND A MAXIMUM PLASTICITY INDEX (PI) 5 FILTER FABRIC SHALL BE NON -WOVEN GEOTEXTILE SUCH AS MIRAFI 140N,
SOILS AS BEING COMPETENT PER THE DESIGN PARAMETERS. OF 20. THE BACKFILL SHALL BE FREE OF DEBRIS AND ORGANIC MATTER. OR APPROVED EQUIVALENT.
6.0 LEVELING PAD SHALL CONSIST OF COMPACTED SAND, GRAVEL, HIGHLY EXPANSIVE SOILS (MH-CH) SHALL NOT BE USED IN THE 6 THE DESIGN OF THE GEOWEB CELLULAR CONFINEMENT RETAINING WALL
OR COMBINATION AND SHALL BE A MINIMUM 6-INCH THICK REINFORCED FILL ZONE. A55UMES THE FOLLOWING PARAMETERS:
LAYER WITH A MINIMUM WIDTH OF 42 INCHES.
Ym• Moist FRICTION
7.0 A 4-INCH-DIAMETER SLOTTED HDPE DRAINAGE PIPE SHALL BE INSTALLED 15.0 REINFORCED FILL SHALL BE PLACED IN 6-INCH LIFTS AND SOIL SOIL UNIT WEIGHT ANGLE COHESION
BEHIND THE WALL AND CONNECT TO WEEPHOLES INSTALLED AT COMPACTED TO A MINIMUM OF 95 % OF MAXIMUM STANDARD CONDITIONS Type (PCF) (DEG) (PSF)
THE BASE OF THE WALL (40 FEET ON CENTER) AND EXTEND BEYOND PROCTOR DENSITY (ASTM D-698). COMPACTION TESTS SHALL REINFORCED FILL Granular or Low Plasticity Soil 120 28 0
THE FINAL GRADE TO DAYLIGHT (SEE DRAIN DETAIL). BE PERFORMED AS THE WALL IS INSTALLED. COMPACTION RETAINED SOIL SM-ML, SC-CL 120 28 0
WITHIN 3 FEET OF THE WALL SHALL BE LIMITED TO HAND- FOUNDATION SOIL SM-ML, SC-CL 115 28 100
8.0 DRAINAGE AGGREGATE AND GEOWEB INFILL SHALL CONSIST OF OPERATED EQUIPMENT.
CLEAN ANGULAR GRAVEL, MEETING THE FOLLOWING GRADATION AS 16.0 A VIBRATORY PLATE TAMPER SHALL BE USED TO DEN51FY 7 SOIL STRENGTH PARAMETERS ARE BASED ON USE OF GRANULAR OR LOW
DETERMINED IN ACCORDANCE WITH ASTM D-422. NO.57 STONE. COMPACTION TESTS CAN BE WAIVED PLASTICITY SOILIN THE REINFORCED FILL ZONE. ON -SITE GRANULAR SOIL
WHERE NO.57 STONE IS USED AS REINFORCED BACKFILL. CAN BE USED FOR FILL PROVIDED THE SOIL IS PLACED
SIEVE SIZE PERCENTAGE PA55ING 17.0 CONTRACTOR SHALL SLOPE SITE GRADES TO DIRECT SURFACE IN 6-INCH LIFTS AND EACH LIFT IS COMPACTED TO A MINIMUM OF 95% OF
1 INCH 100 RUNOFF AWAY FROM THE WALL AT END OF EACH DAY TO AVOID MAX. STANDARD PROCTOR DENSITY USING PORTABLE COMPACTION EQUIPMENT.
3/4 INCH 75-100 WATER DAMAGING THE WALL WHILE UNDER CONSTRUCTION. DO NOT USE HIGH PLASTICITY CLAY (CH) OR ELASTIC SILT (MH),
NO.4 0-60 18.0 ANY SURFACE DRAINAGE FEATURES, FINISH GRADING, PAVEMENT, ROOTS OR TOPSOIL IN REINFORCED ZONE.
NO. 40 0-50 OR TURF SHALL BE INSTALLED IMMEDIATELY AFTER WALL IS
NO. 200 0-5 COMPLETED. ANY SOFT, SATURATED SOIL ENCOUNTERED IN SUBGRADE SHALL BE UNDERCUT
19.0 IF SITE AND SOIL CONDITIONS, WALL GEOMETRY, OR WALL AND REPLACED WITH CRUSHED STONE TO STABILIZE THE FOUNDATION
9.0 A NON -WOVEN FILTER FABRIC SHALL BE USED TO ENCAPSULATE LOADING ARE DIFFERENT THAN THE DRAWINGS AND THE DESIGN SUBGRADE OR AS DIRECTED BY THE GEOTECHNICAL ENGINEER.
THE DRAINAGE AGGREGATE AND DRAIN PIPE TO PREVENT CLOGGING. PARAMETERS, THE CONTRACTOR MUST CONTACT THE WALL DESIGN
ENGINEER PRIOR TO PROCEEDING WITH THE CONSTRUCTION OF WALL A - MAXIMUM WALL HEIGHT = 11.5 FEET (INCLUDING EMBEDMENT)
10.0 GEOGRIDS SHALL BE LAID HORIZONTALLY ON COMPACTED THE WALL. FRONT SLOPE = LEVEL TO MAX 2H:IV
BACKFILL FOR THE REQUIRED GEOGRID LENGTH (GL) 20.0 DETAILS FOR FENCE POSTS AT THE TOP OF THE WALL ARE BACKSLOPE = LEVEL TO MAX 2H:IV
NOTED ON THE WALL PROFILE. THE GEOGRID SHALL BE PROVIDED FOR PLACEMENT OF POSTS. SURCHARGE AT TOP OF WALL (VEHICLE TRAFFIC) = 100 PSF, WHERE APPLICABLE
PLACED WITHIN ONE INCH OF THE FRONT FACE OF
THE GEOWEB CELLULAR SECTION BELOW AND EXTEND HORIZONTALLY MIN FACTOR OF SAFETY (SLIDING) = 1.5
OVER COMPACTED FILL. MIN FACTOR OF SAFETY (OVERTURNING) = 2.0
11.0 GEOWEB CELLULAR UNITS SHALL HAVE DIMENSIONS MIN FACTOR OF SAFETY (BEARING CAPACITY) = 2.0
6 INCHES HIGH BY 30 INCHES DEEP (WHEN EXPANDED) BY DESIGN SOIL BEARING PRE55URE = 2,000 PSF [SEE NOTE ON WALL PROFILE]
8.67 FEET LONG AND SHALL BE WITHIN + 17 IN ANY DIMENSION.
12.0 A 2-INCH SETBACK PER GEOWEB SECTION SHALL BE MAINTAINED FOR Prof fit Road Townhomes North
r`NNNN.':151ti5 .111ti5 ��pLTH OF Albemarle County, Virginia
PROPER BATTER (I.E. 18.4 DEGREE CANT FROM VERTICAL). r.,n.n.nv`. Pr.r.r.r.r. �r.r.r.r.r. tY 9
nN•n•nN..;1.1 ;1 ;1 ;5 .;1.1 ;1 ;ti•5
r`NNNN.:111ti5.111ti5• O� CIRCEO GEOTECH
�r•r•r•r•r•�r•r•r•r•r•
2" Setback � `�" ••1.1.1;ti;5.;1•};1;ti•5 � C� Circeo
13.0 STRETCHER FRAMES, J-PINS OR OTHER SUITABLE ANCHORS ,y 5956 Buckland Mill Road
-•c:{:;::{:c:-:q:; -• = Geotechnical
SHALL BE INSTALLED TO EXPAND THE GEOWEB SECTIONS (Typ.) "r{_ :i{' .r{_ ICHAEL R. C R 0 Y h Engineering, P.C. Roanoke, Virginia 24019
LiC. a
PRIOR TO PLACEMENT OF FILL. 6° H .a No.021245 Phone: (540) 366-2379W
GEOWEB SETBACK �'o /Z�S�ZZ
.off Gti? Scale: N/A Project No. RW-2891
(Not to Scale) SSIONAL Date: 12/08/22
r.�•� Revision: I Sheet 1 2 of 5
LEVELING PAD DETAIL
(Not to Scale)
Reinforced Fill
t" Dia. Slotted HDPE Drain Pipe
v/ No. 57 Stone Encapsulated
v/ Fitler Fabric
foil Backfill
Fence/Handrail Post
Behind Wall
Min 6" Min 6" Dia. Sleeve
Fill Grout Around Post
Cut Geogrid Around Sleeve
Filter Fabric \
4 FT Wide
l.NNNNNN.I�
J•J.J•MNNNN
rNNNNN.�/`N
I.NNNNJ�J`.I`
J•NJ•J.NNJ•J�
i
I.NNNNNNN
ti:i.ti.1.
J•J.NMNMNM
J•NNNNNNN
f.f.f.f.f
y.Yti K.•
J•NNNNNNN
I.NNNNNNN
.f.J•1•J•r•.
�.1.5.1.1.1.�
v wwv
�y�Y�AI
%a%IG�A
Reinforced Fill
6" Dia. Min
FENCE POST DETAIL
(Not to Scale)
Weephole - 40 FT O.C. (Typical)
Cut Opening Through Geoweb
Stone Leveling Pad
No. 57 Stone
Op
Lic.. No.
021245
/ % V12r,
c
S's, NA
WEEPHOLE DETAIL
(Not to Scale)
Reinforced Fill
4" Dia. Perforated Drain Pipe
Wrapped w/ Non -Woven
Filter Fabric
Min 12"
' Geoweb GW30V6
Topsoil Open Joint (Weephole)
DRAIN DETAIL at Max 40' O.C.
(Not to Seale) Drain to Daylight
Circeo 5956 Buekland Mill Road
Geoteceerinhn Roanoke, Virginia 24019
Engineering, P C. 9
Phone:(540) 366-2379
Project No. I RW-2891
WALL A
W,
WALL A
(Typical)
- 4-FT Tall Fence
TOW
&L=10FT
Crest
518
511
1
• ••
��
• • •
_
1 _I___.___
• • • •
__
___,__��_________________
I
w�
wwl+_w�w�w�w�w�l�m
�—���_•
alwww�w�wwi�w�w��•�_
�����•�w��ww�w�w�www��_�_�_�_�_�_�_�_�_�_�_�__�•�_�_�_
1:
�•��egp���•�
�llllllll�l��w�
www�www�www�w�w�li�_�_
���_�_�_w�w�w�w�w�w�w�w�ww
w�w�www�w�w�w�ww
1.
i
--•— --- —_win_w�i1�L'✓iL••iww�__________waa�www�www�w�w�lwww�w�w�w�w�www�w�w�w�w�w�w�w�ww
,�www�w�`
w�w�www�r�w�w�
- 1 FT
1
500
498
. �1'�i_A_�_�
.
...._�_�_w�www�w�w�w�w�www�w�w�w�w�www�w�w�w
: • •
.wa
===============
e�P 1 =-492
• • : • • •
•
1 "
®
490 Proposed Grade at Bottom of Wall — BOW = 494.0 -
488 Leveling Pad BOW = 492.5 (Low Point)
12 20 24 30 40 50 60 70 80 90 100 110 116 120
I I I Station (ft)
I Drain Pipe to Daylight - 40 FT O.C. (Typical) I
f GL = 8 FT iI f GL = 10 FT GL = 12 FT I. GL = 10 FT
I
LEGEND
Use Granular or Low Plasticity Soil
in Reinforced Fill Zone
Albemarle
nia
0 Presto Geoweb GW30V6 (6" Height x 30" Width) EQ Circeo 5956 Buckland Mill Road
Geotechnical
Leveling Pad (Min. 6" Thick Stone) _= Engineering, P.C. Roanoke, Virginia 24019
roc Top of Cap Unit RETAINING WALL A v ICHAEL R. C RC >
Phone: 540 366-2379
Lic. No. 021245 I ( )
TOW Top of Wall (Excluding Cap Unit) .o Q Fax: (540) 904-6200
BOW Bottom of Wall (Including Embedment) Sta. 0 to Sta. 120 P �Z/8- H; 1"=
60 StratoGrid SGV60 Viewed From Front Face of Wall '0F 0 Scale: V: 1"= 1o10 ft. f+. Project No. RW-2891
SSIONAL �� Date: 12/08/22 J
0 4" Drain Pipe to
n Soil Bearing Pressure = 2,000
----------------
----------------------------
--------------------
--------------iiii--
•-------------------
--------
. iiii----
--__-----
---
----------------
-
--------------------
=---
-------
• . •
---
-
-------
-------
i--
---
•—
-�
i--
Ii—���iiiiiliii—w
iiliii�.iiii
1i�_�_r_�_�_�•��_�_�_��_�_�_��_�_�_�_�_�_�_�_�_�_�_!—.i_i�l�
ii
ii�liiii
1
1 1
1
1
1
-
wadi
iiii_
�7TTTTTTTTTTTTTT
r_riiiiiiiiiiiiiii
TTTT_T_T__T
WALL A
4-FT To TOW 508.0
512
TOW 5 494 - t6" Thick Stone BOW 498.0 Vow__� Storm brain Under Wall A
492 BOW 496.0 Proposed &rode at Bottom of Wall Invert EL. 495.0
490 Leveling Pad
BOW 494.0 1 1 brain Pipe to Daylight - 40 FT O.C. (Typical)
488 ril I
I 11 1 160 I 180 •• I I I 1
I FT GL 12 FT
i== iiii_i_i_iiiiiii_i_i_i_iiiis / •
ii .iiiiiiiiiiiii��i��
i O 510.0
; ii�
iii--
.�iliiii iiii iii--
LU
i_i_i_ii—��� iiiiiiiiir—
�i--il�iiiliil�iliiiiiiii iiii iiii �
iiii iiii iii
1�i_i_i_li_i_—_—il�iiilii�iiliiii _�_�_�_�__��_�_�_�_��_�_� _
• I�iiilii—•�il�iiili� ���—iiiaiJ•iiiiiiiiiii�'
1 512 -I�iiil���.—----f-l/r1i11�7
Fence a
1: i a w
16 j��—=��i�����'�_���.=gym—
iBOW 510.5
� so
11 _
BOW 508.0
i--�- —
�s a :. • •
GL 1 FT
496
• '
494 :. :.500.0
• ••1
492
1
1
Prop
11 1 •1' at Bottomof • i i
ii
488
I • I ® m
Station (ft)
I
Use Granular or Low Plasticity Soil Albemarle County, Virginia
Proffit Road Townhomes North
in
Reinforced 1 • •
Presto Geoweb • I ' / •_5956
® Pad 6" Thick Stone) RETAINING • • Roanoke, Virginia 24019
.
TOC Top of Cap Unit
TOW Top of Wall (Excluding Cap Unit)
BOW Bottom of Wall (Including Embedment) I I I
60 'StratoGrid SGU60 Viewed From Front Face of Wall
&L C�eoqrid Length (ft) 0 4" brain Pipe to Daylight [besign Soil Bearing Pressure = 2,000 psf