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Home My WebLink AboutSDP202000004 Plan - Revision 2021-04-13 (2)HamDton Inn Charlottesville Albemarle County, Virginia � r 9 Fli Ell NOTES: 1. THE GEOTECHNICAL ENGINEER SHALL EVALUATE THE FOUNDATION SOILS PRIOR TO AND DURING CONSTRUCTION. UNSUITABLE SOILS SHALL BE REMOVED AND REPLACED WITH PROPERLY COMPACTED FILL AS RECOMMENDED BY THE OWNERS GEOTECHNICAL ENGINEER. UNSUITABLE SOILS ARE DEFINED AS ANY SOILS THAT DO NOT HAVE SUFFICIENT BEARING CAPACITY OR CAUSE EXCESSIVE WALL SETTLEMENT. 2. SOILS USED IN THE REINFORCED ZONE SHALL MEET THE REQUIREMENTS AS SHOWN IN NOTE 3 BELOW. OTHER MATERIALS SHALL REQUIRE APPROVAL BY THE WALL DESIGNER. 3. NOTE:PARAMETERS BELOW TO BE VERIFIED DURING CONSTRUCTION BY GEOTECHNICAL ENGINEER. REINFORCEDSOIL: FILL FOR THE REINFORCED ZONE SHALL HAVE A LIQUID LIMIT 540. A PLASTICITY INDEX 515, AND 5 40% FINES (-200 SIEVE). 28 DEGREES, MOIST UNIT WEIGHT • 125 Pd.. RETAINED SOIL: 28 DEGREES, MOIST UNIT WEIGHT= 125 pd. FOUNDATION SOILS: 2B DEGREES, MOIST UNIT WEIGHT- 125 pcf. DRAINAGE STONE: 38 DEGREES, MOIST UNIT WEIGHT = 115 pcf. (VDOT No. 57 STONE FOR DRAINAGE) LEVELING PAD STONE: 38 DEGREES, MOIST UNIT WEIGHT = 135 pcf. (VDOT 21A/B FOR LEVELING PAD, OR VDOT 57 STONE) 4. NO SUBSTITUTIONS OF THE MATERIALS SHOWN ON THESE DRAWINGS SHALL BE PERMITTED UNLESS APPROVED BY HILLIS-CARNES ENGINEERING ASSOCIATES. 5. WALL ALIGNMENT AND GRADE SHALL BE BASED ON SURVEY CONTROL BY OTHERS. WALL GRADES BASED ON THE GRADING PLAN BY BOHLER ENGINEERING, DATED 03/06120. 110 v K Moor O. 026397 S/nxr►iG 7. QUALITY CONTROL AND QUALITY ASSURANCE TESTING SHALL BE PERFORMED ON A FULL-TIME BASIS. THE SOILS AND MATERIALS PLACED IN THE REINFORCED ZONE SHALL BE IN ACCORDANCE WITH THE SPECIFICATIONS SHOWN IN THESE WALL DESIGN DRAWINGS. DOCUMENTATION SHALL INCLUDE FIELD DENSITY TEST RESULTS, FILL TYPE, LIFT THICKNESS, SOILS LABORATORY BULK SAMPLE TEST RESULTS (GRAIN SIZE, COMPACTION, ATTERBERG LIMITS, ETC) , AND GEOGRID TYPE, LENGTH AND PLACEMENT ELEVATION. DENSITY TESTING OF SOILS USED IN REINFORCED ZONE IS NOT REQUIRED IF VDOT NO. 57 STONE IS USED FOR REINFORCED ZONE FILL. 8. COMPACT FILL TO 95% OF THE SOIL'S STANDARD PROCTOR DENSITY (ASTM D698) FOR THE ENTIRE WALL HEIGHT AT A MOISTURE CONTENT PRIOR TO COMPACTION WITHIN 3%OF THE SOIL'S OPTIMUM MOISTURE CONTENT. IF VDOT NO. 57 STONE IS USED IN THE REINFORCED ZONE, PLACE NO. 57 STONE IN LAYERS NO GREATER THAN 12 INCHES AND COMPACT WITH A MINIMUM OF 4 PASSES WITH A VIBRATORY COMPACTOR. COMPACTION WITHIN 4 FEET OF BACK OF BLOCK SHALL BE PERFORMED WITH LIGHTWEIGHT HAND -OPERATED EQUIPMENT AND IN THINNER LIFTS. 9. INSTALL ALL WALL COMPONENTS AND MATERIALS IN ACCORDANCE WITH MANUFACTURER'S INSTALLATION PROCEDURES AND RECOMMENDATIONS. 10. GUARDRAIL AND/OR FENCE SHALL BE IN COMPLIANCE WITH LOCAL BUILDING CODE, STATEWIDE BUILDING CODE, OSHA REQUIREMENTS AND OTHER APPLICABLE AGENCY REQUIREMENTS. DESIGN IS BY OTHERS. 11. A PRECONSTRUCTION MEETING SHOULD BE HELD PRIOR TO ANY WALL CONSTRUCTION. ATTENDEES SHOULD INCLUDE OWNER, WALL DESIGN ENGINEER, WALL CONTRACTOR,SURVEYOR, AND EARTHWORK CONTRACTOR. 12. 6. ANY ALIGNMENT OR GRADE CHANGES MADE IN THE FIELD OR PROPOSED BY THE OWNERS CIVIL DESIGNER, OR THE CONTRACTOR SHALL BE IMMEDIATELY REPORTED TO HILLIS-CARNES SO THAT EVALUATION AND EFFECT ON DESIGN CHANGES, IF NECESSARY, CAN BE MADE BY HILLIS-CARNES. HILLIS-CARNES ENGINEERING ASSOCIATES WALL CONTRACTOR SHALL PROVIDE CERTIFICATION LETTER TO OWNER WITHIN ONE WEEK OF WALL COMPLETION STATING THAT THE WALL WAS CONSTRUCTED IN ACCORDANCE WITH THE APPROVED PLANS AND SPECIFICATIONS. WARRANTY FOR THE WALL SHALL BE AS AGREED UPON WITH THE OWNER AND STATED IN THE WALL BUILDER'S CONTRACT. HILLIS-CARNES ENGINEERING ASSOCIATES 10971 Richardson Road Ashland , VA 23005 (804)550-2203 �cRaceeexixowAu 493 I I I — 492- 491- 11 490- 489— — 488 I EL.eoxl 487- 486— I 485 IMFRONTOFWPIl 484— TI II Tt I I I I I I I I I I I 0+0 0+10 0+20 0+30 WALL 1 WALL MINIMUM BEARING CAPACITY 2000 PSF r exPOE®INUW/1L IN FROMOFWNL IIII IIII IIII IIII IIII IIII IIII I 1+20 1+30 1+40 1+50 WALL 1 Continued WALL MINIMUM BEARING CAPACITY 2000 PSF GRAPHIC SCALE 0 4 8 12 20 1+60 EL awv E FwALE— I I I 0+40 I I I I I I I 0+50 I I I 0+60 I I I I I I I I 0+70 I I I I I I I I I 0+80 0+90 1+00 —484 —484 MINIMUM REQUIRED BEARING CAPACITY: 2000 PSF 1+10 1+20 T N, o m MOO ,: a 026397 HILU"ARNES ENGINEERING ASSOCIATES I W71RMatlwnR SIGNIFIES WALL ALIGNMENT CHANGE MNana, VA MS (BOC)SEp]SUI Hampton Inn Charlottesville H I LL I S- CAR N ES - SIGNIFIESGRID RICHANGE Elevallm View ENGINEERING ASSOCIATES 1 11 Gi'tPSi7I7LR {T 7Y I �YY.. �Y� IY�YI�YY..YY�IYYYI .L RiS.:^7L±6'T77.YYYYYYI.YY.tYYYYYY..YY..YYY� YYY..YY..YYYYYY..YY..YYY = �\�I�ti� Y�� [�Y � Yli [itiY [i [i [�YY �f��Y ■ /i.YYYYYY..YY..YYY� 1+20 1+30 1+40 1+50 WALL 2 Continued WALL MINIMUM BEARING CAPACITY 2000 PSF GRAPHIC SCALE 0 4 8 12 20 1+60 1+70 lill ITItSII I I I I I I I I I I I I I I I I I Oi IN ROI IF WILLI 0+50 0+60 0+70 0+80 0+90 1+00 I 1+80 1+90 I 2+00 I 2+10 2I20 2I30 - F- ELaaIm 1+10 1+20 ♦ SIGNIFIESWACHANGE LL HILLIS— CARNES ALIGNXmnoton Inn 1 MINIMUM REQUIRED BEARING CAPACITY: 2000 PSF ALIGNMENT - SIGNIFIES LENGTH/ALLIIGINENT CHANGE Elevation View ENGINEERING ASSOCIATES 2+40 IESENGINEERINGASSGGIATES I WW.VAY legal550-ss03 2+40 ' , 1 ---------- II�r7pT1,v WTrr7 -- ----�� mmmmmmm. WALL 2 Continued-493 CAPACITYWALL MINIMUM BEARING 111 PSF 1: 1 506— 1L`iXT7i76hTdEi 504— '�WINOWN 1 1 1 1 �I — � Ir—mensewro�+.L 496— — 497 — 0+p I I I I I I I0+1 I I I I I I I I0+2 WALL 3 WALL MINIMUM BEARING CAPACITY 2000 PSF GRAPHIC SCALE Rim iiiiiiiiia 0 4 8 12 20 i- 1- 4 1 -I / 7` -' EL aesxs eL.asam _ CIMCE IN FR0 OF WPLL I I( I I I I I I I I I I I I I I I I I I I I I I I 0+30 0+40 0+50 0+60 0+70 0+60 0 e OOliL Lic Ira 026397 c 0+90 1+00 1+10 1+20 ♦ SIGNIFIESWALL ALIGNMENTCHANGE HILLIS-CARNES (ea)ssn �s Hampton Inn Charlottesville MINIMUM REQUIRED BEARING CAPACITY: 2000 PSF • SIGNIFIES RID L NGTIVALIGNENT CHANGE Elavatlon View ENGINEERING ASSOCIATES re nuouvr n. xuzo sheer sa DEwc De Hu. ovPvm ev: n 1+20 y! I J ` EIN FRCf1rOFW 1+30 1+40 1+50 WALL 3 Continued WALL MINIMUM BEARING CAPACITY 2000 PSF I .... I .... I....I.. I I 2+40 2+50 2+60 2+70 WALL 3 Continued WALL MINIMUM BEARING CAPACITY 2000 PSF y `EL 1+60 1+70 1+80 1+90 I &ao 2+80 GRAPHIC SCALE MINIMUM REQUIRED BEARING CAPACITY: 2000 PSF 0 4 8 12 20 GR EBOINGW L—i �-1 CiUCE W fP 2+00 2+10 2+20 2+30 2+40 •,emu Y Mt?Oli 397 9 /z—N —508 —507 —506 —505 —504 —503 —502 —501 —500 —499 —498 —497 HILOSCARNES ENGINEEWNG ASSOCIATES 10971 Mr nlscn Ro d A[IWM, VA 2.M lees Es9�ama ♦ ALGGNMENNIFIES TUCHANGE HILLIS—CARNES Hampton Inn Lharlottesvllle SIGN- L NGIFIES THIALIGINENTCHANGE Elevalbn View ENGINEERING ASSOCIATES w.7e nuc9sT 11,zmo sc>:r aaFla veuE Ro' DESIGNM 9v: . oiuxxB MPG oLu y 'I . soa stsasn `mraw Jill IIII IIII IIII IIII `I-T-1W1`IIIJill IIII IIII Jill Jill Jill Jill IIII IIII IIII IIII IIII IIII IIIIIIIII IIII III 0+0 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 _ 1+20 WALL 4 WALL MINIMUM BEARING CAPACITY 2000 PSF - ` TH OF A�MOE�nv 026397 C�s? MA[E awINOWY EL 9tl4) ' FL s1a5r EL.1423 GaRCE9wW. — EL�,:m —5t5 —514 L —513 —512 —511 _ —510 —509 —SOS IF 11 it It R111M —507 _ IF0.0�11 �W.LL� 1 EL Lfi.Sr � I— EW00a Wall— —505 —505 JJ-- ..JJ�� —504 IIIIIIIII IIIIIIIII IIII IIII IIIIIIIII Jill Jill IIII IIII IIIIIIIII IIII IIII IIII IIII IIIIIIIII IIII IIII IIII IIII I 1+20 1+30 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 WALL 4 Continued WALL MINIMUM BEARING CAPACITY 2000 PSF HILLISLARNES ENGINEEPoNG ASSGGIATES 10971 N..- PgeJ ASM1IaM.VA2A05 GRAPHICSCALE ♦ SIGNIFIES WALL (mFl 11 .a�rl ALIGNMENT CHANGE HILLIS-CARNES Hampton inn Charlotlasvllla MINIMUM REQUIRED BEARING CAPACITY: 2000 PSF a 4 8 12 20 SIGNIFESGRID IE LENGTH/ AUGMENT CHANGE Elevation Yew ENGINEERING ASSOCIATES o�rE. avcusrn. xvo sNEEr aoF to acNE: Nor roswte I— ssuo I -TKe w�u — I — �O I —51 — I 514 S1" —513 —512 —511 —510 509 —608 —507 so,.�� — I —506 —505 504 I I I I I I I I I HI]R T111�LI I I I I I I I I I I I 2+40 2+50 2+60 2+70 2+80 2+90 3+00 3w� WALL 4 Continued WALL MINIMUM BEARING CAPACITY 2000 PSF Tk Na 026397 HI LN&CARNES ENGINEERWG ASSOCIATES AaM1NM,VR 23005 GRAPHIC SCALE ♦ ALIGN ES WALL /`� taosville ° t'-°�I ALIGNMENT CHANGE H�LLIS-CARNES Hampton Inn Chatlotteavllle MINIMUM REQUIRED BEARING CAPACITY: 2000 PSF R 4 g 12 20 • SIGNIFIES GRID Elevation View LENGTH/ ALIGNENT CHANGE ENGINEERING ASSOCIATES ,E awMT,, ,o.,H«. DESZNEDe, �u owvm n: we c�eaeo e. r1212'—1 a D� TOP VIEW 8" BEVELED UNITS �. „^- 4 1� 1212' �I SIDE VIEW PTJ872' e" I-PVTEW FRONT VIEW STRAIGHT UNITS rAnchorTM Diamond Pro® D7 'NDIVIDUAL BLOCK DETAIL S2 (NOT TO SCALE) REMOVE PORTION OF MACENTUNITSTOALLOW DRAINPIPE THROUGH FACE ......._....IL.D ........_...—VDIA DRAINPIPE (ELEVATION VARIES) 2 CUT—�� DAYLIGHT DRAIN THROUGH WALL FACE EVERY (20 FT MAX.) 2ND COURSEABOVE GRADE 1ST COURSE ABOVE GRADE 1ST COURSE BELOW GRADE 2ND COURSE BELOW GRADE Anchorm Diamond Pro® D4 AYLIGHT THROUGH WALL FACE DETAIL S2 (NOT TO SCALE) NOTE: USE ADHESIVE O CUT UNITS (X) T( (BEVELED BLOCI rAnchorTM Diamond Pro® D2 TYPICAL BASE PREPARATION DETAIL S2 (NOT TO SCALE) COMPACTEDSUBGRADE—/ (NOTE IF FAT CLAY OR ELASTIC SILTSOILS ARE ENCOUNTERED AT LEVELING PADGRADE, THESE SOILS SHALL BE UNDERCUTAND REPLACED WITH APPROVED FILE.) S' MINIMUM COMPACTED VDOT 21AS OR VDOT Nu BT STONE LEVELING PAD. MINIMUM TWO PASSES WITH LIGHT, HAND OPERATED COMPACTION EQUIPMENT Anchor- Diamond Pro® D3 TYPICAL STEP UP DETAIL S2 (NOT TO SCALE) PRIMARY STRENGTH DIRECTION L+I 7 7 7 + 7 I NOTE IN THE 'CROSSOVER AREA• OF REINFORCEMENT, ONE OF THE DYERS OF REINFORCEMENT SHOULD BE LOWERED OR RAISED ONE COURSE TO ALLOW PLACEMENT OF THE REINFORCEMENT WITH THE PRIMARY REINFORCEMENT STRENGTH DIRECTION PROPERLY ORIENTED. THE REINFORCEMENT SHOULD NOT EXTEND INTO THE SEGMENTAL RETAINING WALL UNITS ON THE RETURN (EG OF THE 80-DEGREE CORNER AnchorTM Diamond Pro® D6 AnchorTM DCAL rOUTSIDE CORNER WITH REINFORCEMENT DETAIL5_ TYPICAL PICAL 90 DEGREE OUTSIDE CORNER DETAIL S2 (NOT TO SCALE) S2 (NOT TO SCALE) AG. I L Lie « r2097 HILLIS-CARNES Namur Details ENGINEERING ASSOCIATES FINISHED G ist-WE VA �•�,,,,,� FINISHED GRADE rAnchorTM Diamond Pro® D1 TYPICAL CROSS SECTION DETAIL S3 (NOT TO SCALE) CAP BLOCK DIAMOND PRO' BLOCK GUIDE RAIL (DESIGNED BY OTHERS) GROUT AROUND POSIMPIPE SLEEVE INSTALLED DURNG WALL CONSTRUCTION I 5 FT:MIN. I I � I GEOSYNTHETIC REINFORCEMENT 21^�(AN.) OF FREE-0RAINING I AGGREGATE AnchorTM Diamond Pro® D3 TYPICAL GUIDE RAIL CROSS SECTION 53 ,NOT TO SCALE) OR ASPHALT SWALE PLANTING SOIL SOIL SEPARATING FILTER FABRIC SECURE CAP WITH CONCRETE i /'COMPACTED ADHESIVE BACKFILL DIAMONDPROUNR3 •.•.:; CLEAR CRUSHED IN :•:\ 1 ROCKIN UNIT ::•.� VOIDS BEHINDTHE WALL ..- SOIL SEPARATING FILTER FABRIC /r P WJTING SOIL / �CPERVIOUSS0IL OR COMPAIOUSSOIL SECURE CAP WITH CONCRETE ADHESIVE BEHIND THE WALL Rf+^"'. BACKFILL COMPACTED CLAY OR IMPERVIOUS SOIL SWALE SECTION Anchor as Diamond Pro® D2 TYPICAL DRAINAGE SWALE DETAIL S3 (NOT TO SCALE) FENCEHEIGHTOFVP PLACE ADDITIONAL REINFORCEMENT ON THE NEXTCOURSE OF SEGMENTAL UNITS IMMEDIATELY ABOVE THE SPECIFIED PLACEMENT ELEVATION IN A MANNER THAT ELIMINATED GAPS LEFT BY THE PREVIOUS LAYER OF GEOSYNTHETIC AT THE SPECIFIED REINFORCEMENT ELEVATION. CONTRACTORTO COORDINATE WITH FENCE CONTRACTORTO ENSURE PROPER gAMETER DEPTH, SPACING ETC. (FENCE DESIGN BY OTHERS) POSTS FOR FENCE BEHIND WALLSHALL BE HAND DUG. 2'0" �\ SLEEVE AND NON -SHRINK GROUT AROUND POST / AnchorTM Diamond Pro® N ENCE DETAIL SCHEMATIC \11S$ (NOT TO SCALE) NOTES: 1. DRAINAGEAGGREGATENOT SHOWN FOR CLARITY 2. MINIMUM RADIUS: S FT. TO FACE PRINCIPLE REINFORCEMENT DF ECTK)N AnchorTM Diamond Pro® D5 TYPICAL INSIDE CURVE DETAIL S3 (NOT TO SCALE) L STEP 1-PLACE REINFORCEMENT SO LITTLE OR NO OVERLAP OCCURS IN THE RADIUS AREA. IF OVERLAP OCCURS, PLACE 2TO 3INCHES OF SAND BETWEEN THE RENFORCEMENT LAYERS. Y-T OF SOIL FILL REQUIRED BETWEEN OVERLAPPED REINFORCEMENT FOR PROPER SOL AND REINFORCEMENT INTERACTION L STEF LAYTHENEXTCOURSEOFBLOCK. MAKE A MARK ON THE BACKOF THE BLOCKS IN THE ARFASTHATARENOTREINFORCED. BACKFILL AMDCOMPACTTHATCCURSE. STEP 3: PLACE REINFORCEMENT IN THE AREAS WHERE THE MARKS SHOW GAPS IN THE LOWER REINFORCEMENT PATTERN. CONTINUE NORMAL WALL CONSTRUCTION, REPEATING THESE STEPS AS NEEDED. PRINCIPLE REINFORCEMENT DIRECTION -L A FT. TO FACE rAnchorTM Diamond Pro® D6 TYPICAL OUTSIDE CURVE DETAIL SS (NOT TO SCALE) 1071 Ri4adson R ASN".VA2',M45 HILLIS-CARNES Ieaa155azAW HametonlnnCharlottesville Details re Mmuar n.lma s1Ax-r: eoF Ra ENGINEERING ASSOCIATES .c '..Saar w oaAxN av: Luc CONCRETE SEGMENTAL RETAINING WALL SYSTEM PARTI-GENERAL 1.01 SECTION INCLUDES A. RETAINING WALL SYSTEM CONSTRUCTED OF CONCRETE SEGMENTAL RETAINING WALL UNITS. B. GEOSYNTHETIC REINFORCEMENT FABRIC C. LEVELING PAD BASE D. DRAINAGE AGGREGATE E. BACKFILL F. DRAINAGE PIPE G. ADHESIVES 1.02 REFERENCES A. AMERICAN ASSOCIATION OF STATE HIGHWAY TRANSPORTATION OFFICIALS(AASHTO) 1. AASHTO M288 GEOTEXTILE SPECIFICATION FOR HIGHWAY APPLICATIONS 2. AASHTO STANDARD SPECIFICATIONS FOR HIGHWAY BRIDGES AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 1. ASTM C140 STANDARD TEST METHODS FOR SAMPLING AND TESTING CONCRETE MASONRY UNITS AND RELATED UNITS 2. ASTM G1262 STANDARD TEST METHOD FOR EVALUATING THE FREEZE -THAW DURABILITY OF MANUFACTURED CONCRETE MASONRY UNITS AND RELATED CONCRETE UNITS 3. ASTM C1372 STANDARD SPECIFICATION FOR SEGMENTAL RETAINING WALL UNITS 4. ASTM D448 STANDARD CLASSIFICATION FOR SIZES OF AGGREGATE FOR ROAD AND BRIDGE CONSTRUCTION 5. ASTM D698 STANDARD TEST METHODS FOR LABORATORY COMPACTION CHARACTERISTICS OF SOIL USING STANDARD EFFORT (12,400 FT-LBF/F3) (600 KN-M/M3) 6. ASTM D1556 STANDARD TEST METHOD FOR DENSITY AND UNIT WEIGHT OF SOIL IN PLACE BYTHE SAND CONE METHOD 7. ASTM D1657 STANDARD TEST METHODS FOR LABORATORY COMPACTION CHARACTERISTICS OF SOIL USING MODIFIED EFFORT (56,000 FT-LBF/F3) (2700 KN-M/M3) 8. ASTM 02487 STANDARD CLASSIFICATION OF SOILS FOR ENGINEERING PURPOSES (UNIFIED SOIL CLASSIFICATION SYSTEM) 9. ASTM D2922 STANDARD TEST METHODS FOR DENSITY OF SOIL AND SOIL -AGGREGATE IN PLACE BY NUCLEAR METHODS (SHALLOW DEPTH) 10. ASTM D3034 STANDARD SPECIFICATION FOR TYPE PSM POLY VINYL CHLORIDE (PVC) SEWER PIPE AND FITTINGS 11. ASTM D4318 STANDARD TEST METHODS FOR LIQUID LIMIT, PLASTIC LIMIT, AND PLASTICITY INDEX OF SOILS 12. ASTM D4595 STANDARD TEST METHOD FOR TENSILE PROPERTIES OF GEOTEXNLES BY THE WIDE -WIDTH STRIP METHOD 13. ASTM D5262 STANDARD TEST METHOD FOR EVALUATING THE UNCONFINED TENSION CREEP BEHAVIOR OF GEOSYNTHETICS 14. ASTM F405 STANDARD SPECIFICATION FOR CORRUGATED POLYETHYLENE (PE) TUBINGS AND FITTINGS 15. ASTM G51 STANDARD TEST METHOD FOR MEASURING PH OF SOIL FOR USE IN CORROSION TESTING C. NATIONAL CONCRETE MASONRY ASSOCIATION (NCMA) 1. NCMA DESIGN MANUAL FOR SEGMENTAL RETAINING WALLS, THIRD EDITION, FIFTH PRINTING (2010) 2. NCMA SRWU-1 DETERMINATION OF CONNECTION STRENGTH BETWEEN GEOSYNTHETICS AND SEGMENTAL CONCRETE UNITS 3. NCMASRWU-2 DETERMINATION OF SHEAR STRENGTH BETWEEN SEGMENTAL CONCRETE UNITS 1.03 DEFINITIONS A. REINFORCEDFILL: SOIL WHICH IS USED AS FILL BEHIND THE DRAINAGE AGGREGATE AND WITHIN THE REINFORCED SOIL MASS. B. RETAINED SOIL: SOIL LOCATED IN THE AREA BEHIND THE REINFORCED ZONE. C. DRAINAGE AGGREGATE: MATERIAL USED WITHIN (IF APPLICABLE),BETWEEN, AND DIRECTLY BEHIND THE CONCRETE RETAINING WALL UNITS. D. FILTER FABRIC: MATERIAL USED FOR SEPARATION AND FILTRATION OF DISSIMILAR SOIL TYPES. E. FOUNDATION SOIL: SOIL MASS SUPPORTING THE LEVELING PAD AND REINFORCED SOIL ZONE OF THE RETAINING WALL SYSTEM. F. IMPERVIOUS FILL: SOIL PLACED AT THE GROUND SURFACE THAT REDUCES/IMPEDES THE FLOW OF WATER INTO THE REINFORCED ZONE. G. GEOSYNTHETIC REINFORCEMENT: MATERIAL SPECIFICALLY FABRICATED FOR USE AS A SOIL REINFORCEMENT. H. GLOBAL STABILITY: THE GENERAL MASS MOVEMENT OF A SOIL REINFORCED SEGMENTAL RETAINING WALL STRUCTURE AND ADJACENT SOIL MASS. GLOBAL STABILITY SHALL BE PERFORMED BY THE GEOTECHNICAL ENGINEER. I. PROJECT ENGINEER: GEOTECHNICAL ENGINEER SHALL BE EMPLOYED TO PERFORM SITE OBSERVATIONS, PROVIDE RECOMMENDATIONS FOR FOUNDATION SUPPORT, AND VERIFY SOIL PARAMETERS ON A FULL-TIME BASIS. 1.04 SUBMITTALS TO OWNER A- TEST REPORTS: INDEPENDENT LABORATORY REPORTS STATING MOISTURE ABSORPTION AND COMPRESSIVE STRENGTH PROPERTIES OF THE CONCRETE RETAINING WALL UNITS MEET THE PROJECT SPECIFICATIONS WHEN TESTED IN ACCORDANCE WITH ASTM C140. 1.05 DELIVERY, STORAGE AND HANDLING A. DELIVER, STORE, AND HANDLE MATERIALS IN ACCORDANCE WITH MANUFACTURER'S RECOMMENDATIONS, IN SUCH A MANNER AS TO PREVENT DAMAGE CHECK THE MATERIALS UPON DELIVERY TO ASSURE THAT PROPER MATERIAL HAS BEEN RECEIVED. STORE ABOVE GROUND ON WOOD PALLETS OR BLOCKING. REMOVE DAMAGED OR OTHERWISE UNSUITABLE MATERIAL, WHEN SO DETERMINED, FROM THE SITE. 1. EXPOSED FACES OF CONCRETE WALL UNITS SHALL BE FREE OF CHIPS, CRACKS, STAINS, AND OTHER IMPERFECTIONS DETRACTING FROM THEIR APPEARANCE, WHEN VIEWED FROM A DISTANCE OF 10 FEET. 2. PREVENT MUD, WET CEMENT, ADHESIVES AND SIMILAR MATERIALS WHICH MAY HARM APPEARANCE OF UNITS, FROM COMING IN CONTACT WITH SYSTEM COMPONENTS. 1.00 EXTRA MATERIALS A. FURNISH OWNER WITH REPLACEMENT UNITS IDENTICAL TO THOSE INSTALLED ON THE PROJECT, AS MAYBE REQUESTED BY OWNER. PART2-PRODUCTS 2.01 MATERIALS A. CONCRETE RETAINING WALL UNITS: 1. PHYSICAL REQUIREMENTS a. MEET REQUIREMENTS OF ASTM C1372, EXCEPT THE MAXIMUM WATER ABSORPTION SHALL BE LIMITED TO PERCENT, AND UNIT HEIGHT DIMENSIONS SHALL NOT VARY MORE THAN PLUS OR MINUS 1116 INCH FROM THAT SPECIFIED IN THE ASTM REFERENCE, NOT INCLUDING TEXTURED FACE. b. UNIT FACE AREA: NOT LESS THAN 1.0 SQUARE FEET, C. COLOR: SELECTED BY THE OWNER FROM MANUFACTURER'S FULL RANGE OF STANDARD COLORS. d. FACE PATTERN GEOMETRY: SELECTED BY OWNER. e. TEXTURE: AS SELECTED BY OWNER. B. GEOSYNTHETIC REINFORCEMENT: AS SHOWN ON THE DRAWINGS. C. LEVELING PAD BASE: CRUSHED STONE MEETING THE REQUIREMENTS OF VDOT No. 57 STONE OR 21AIB(8 INCHES MINIMUM COMPACTED THICKNESS). D. DRAINAGE AGGREGATE: VDOT No. 57 STONE. E. REINFORCED FILL: AS STATED IN NOTE 3 OF COVER SHEET. F. IMPERVIOUS MATERIAL: CLAYEY SOIL OR OTHER SIMILAR MATERIAL WHICH WILL IMPEDE PERCOLATION INTO THE DRAINAGE ZONE BEHIND THE WALL. G. DRAINAGE PIPE PERFORATED (BEHIND WALL) OR SOLID (THROUGH WALL) PVC OR CORRUGATED HDPE PIPE MANUFACTURED IN ACCORDANCE WITH D3034 AND/OR ASTM F405. H. CONSTRUCTION ADHESIVE: EXTERIOR GRADE ADHESIVE AS RECOMMENDED BY THE RETAINING WALL UNIT MANUFACTURER. PART 3-EXECUTION 3.01 EVALUATION A. EVALUATION SHOULD BE CONDUCTED BY THE OWNER OR OWNER'S DESIGNATED REPRESENTATIVE. B. EVALUATE THE AREAS AND CONDITIONS UN DER WHICH THE RETAINING WALL SYSTEM IS TO BE ERECTED, AND NOTIFY THE CONTRACTOR IN WRITING OF CONDITIONS DETRIMENTAL TO THE PROPER AND TIMELY COMPLETION OF THE WORK. DO NOT PROCEED WITH THE WORK UNTIL UNSATISFACTORY CONDITIONS HAVE BEEN CORRECTED. WALL CONTRACTOR SHALL VISIT THE SITE TO PERFORM SAME EVALUATION. C. PROMPTLY NOTIFY THE WALL DESIGN ENGINEER OF SITE CONDITIONS WHICH MAY AFFECT WALL PERFORMANCE, SOIL CONDITIONS OBSERVED OTHER THAN THOSE ASSUMED, OR OTHER CONDITIONS THAT MAY REQUIRE A REEVALUATION OF THE WALL DESIGN. 3.02 PREPARATION A. ENSURE SURROUNDING STRUCTURES ARE PROTECTED FROM THE EFFECTS OF WALL EXCAVATION. B. EXCAVATION SUPPORT, IF REQUIRED, IS THE RESPONSIBILITY OF THE CONTRACTOR, INCLUDING THE STABILITY OF THE EXCAVATION AND ITS INFLUENCE ON ADJACENT PROPERTIES AND STRUCTURES. C. OWNER OR OWNERS REPRESENTATIVE SHALL BE RESPONSIBLE FOR LOCATING ANY AND ALL UTILITIES IN THE WORK AREA PRIOR TO WALL CONSTRUCTION. UTILITY LOCATIONS SHALL BE IDENTIFIED IN THE FIELD AND SHOWN TO THE WALL CONTRACTOR'S SITE FOREMAN. 3.03 EXCAVATION A. EXCAVATE TO THE LINES AND GRADES SHOWN ON THE DRAWINGS. OVER -EXCAVATION SHOULD BE EVALUATED BY GEOTECHNICAL ENGINEER. REPLACEMENT OF OVEREXCAVATED SOILS WITH COMPACTED FILL SHALL BE AS RECOMMENDED BY GEOTECHNICAL ENGINEER. USE CARE IN EXCAVATING TO PREVENT DISTURBANCE OF THE BASE BEYOND THE LINES SHOWN. 3.04 FOUNDATION PREPARATION A- EXCAVATE FOUNDATION SOIL AS REQUIRED FOR FOOTING OR BASE DIMENSION SHOWN ON THE DRAWINGS, AND AS RECOMMENDED BY HCEA. B. HCEA SHALL EVALUATE FOUNDATION SOIL TO ENSURE THAT THE ACTUAL FOUNDATION SOIL STRENGTH MEETS OR EXCEEDS THAT INDICATED ON THE DRAWINGS. REMOVE SOIL NOT MEETING THE REQUIRED STRENGTH. OVERSIZE RESULTING SPACE SUFFICIENTLY FROM THE FRONT OF THE BLOCK TO THE BACK OF THE REINFORCEMENT, AND BACKFILL WITH SUITABLE COMPACTED BACKFILL SOILS. C. HCEA SHALL EVALUATE WHETHER THE FOUNDATION SOILS WILL REQUIRE SPECIAL TREATMENT OR CORRECTION TO REDUCE TOTAL AND DIFFERENTIAL SETTLEMENT. D. FILL OVER -EXCAVATED AREAS WITH SUITABLE COMPACTED BACKFILL, AS RECOMMENDED BY HCEA 3.05 BASE COURSE PREPARATION A. PLACE BASE MATERIALS TO THE DEPTHS AND WIDTHS SHOWN ON THE DRAWINGS, UPON UNDISTURBED SOILS, OR FOUNDATION SOILS PREPARED IN ACCORDANCE WITH ARTICLE 3.04, 1. EXTEND THE LEVELING PAD LATERALLY AT LEAST 61NCHES IN FRONT AND BEHIND THE LOWERMOST CONCRETE RETAINING WALL UNIT. 2. PROVIDE AGGREGATE BASE COMPACTED TO 8 INCHES THICK(MINIMUM} B. COMPACT AGGREGATE BASE MATERIAL TO PROVIDE A LEVEL, HARD SURFACE ON WHICH TO PLACE THE FIRST COURSE OF UNITS. C. PREPARE BASE MATERIALS TO ENSURE COMPLETE CONTACT WITH RETAINING WALL UNITS. GAPS ARE NOT ALLOWED. SPECIFICATIONS CONTINUE ON NEXT SHEET.......... ii OF / 1 �. � ?ov, HILLIS-CARNES ENGINEERING ASSOCIATES HILU34MNES ENGINEERING ASSOCIATES IN71 Ritlu, R-d a .dl.nms W4I556 Specifications sr sv 3.06 ERECTION A. GENERAL: ERECT UNITS IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS AND RECOMMENDATIONS, AND AS SPECIFIED HEREIN. B. PLACE FIRST COURSE OF CONCRETE WALL UNITS ON THE PREPARED BASE MATERIAL. CHECK UNITS FOR LEVEL AND ALIGNMENT. MAINTAIN THE SAME ELEVATION AT THE TOP OF EACH UNIT WITHIN EACH SECTION OF THE BASE COURSE. C. ENSURE THAT FOUNDATION UNITS ARE IN FULL CONTACT WITH NATURAL OR COMPACTED SOIL BASE. D. PLACE CONCRETE WALL UNITS SIDE -BY -SIDE FOR FULL LENGTH OF WALL ALIGNMENT. ALIGNMENT MAY BE DONE BY USING A STRING LINE MEASURED FROM THE BACK OF THE BLOCK. GAPS ARE NOT ALLOWED BETWEEN THE FOUNDATION CONCRETE WALL UNITS. E. PLACE 12 INCHES (MINIMUM) OF DRAINAGE AGGREGATE BETWEEN, AND DIRECTLY BEHIND THE CONCRETE WALL UNITS. FILL VOIDS IN RETAINING WALL UNITS WITH DRAINAGE AGGREGATE. PROVIDE A DRAINAGE ZONE BEHIND THE WALL UNITS TO 9INCHES BELOW THE FINAL SURFACE GRADE IN ORDER TO CAP THE BACKFILL AND DRAINAGE AGGREGATE ZONE WITH 91NCHES OF IMPERVIOUS MATERIAL- F. INSTALL DRAINAGE PIPE AT THE LOWEST ELEVATION POSSIBLE (SEE DETAILS SHEET), TO MAINTAIN GRAVITY FLOW OF WATER TO OUTSIDE OF THE REINFORCED ZONE. SLOPE THE MAIN COLLECTION DRAINAGE PIPE, LOCATED JUST BEHIND THE CONCRETE RETAINING WALL UNITS, 2 PERCENT (MINIMUM) TO PROVIDE GRAVITY FLOW TO THE DAYLIGHTED AREAS. DAYLIGHT THE MAIN COLLECTION DRAINAGE PIPE TO AN APPROPRIATE LOCATION AWAY FROM THE WALL SYSTEM AT EACH LOW POINT. G. REMOVE EXCESS FILL FROM TOP OF UNITS AND INSTALL NEXT COURSE. DRAINAGE AGGREGATE AND BACKFILL ARE TO BE COMPACTED BEFORE INSTALLATION OF NEXT COURSE. H. CHECK EACH COURSE FOR LEVEL AND ALIGNMENT. I. INSTALL EACH SUCCEEDING COURSE. BACKFILL AS EACH COURSE IS COMPLETED. PULL THE UNITS FORWARD UNTIL THE LOCATING SURFACE OF THE UNIT CONTACTS THE LOCATING SURFACE OF THE UNITS IN THE PRECEDING COURSE. INTERLOCK WALL SEGMENTS THAT MEET AT CORNERS BY OVERLAPPING SUCCESSIVE COURSES. ATTACH CONCRETE RETAINING WALL UNITS AT EXTERIOR CORNERS WITH ADHESIVE SPECIFIED. J. INSTALL GEOSYNTHETIC REINFORCEMENT IN ACCORDANCE WITH GEOSYNTHETIC MANUFACTURER'S RECOMMENDATIONS AND THE WALL DESIGN DRAWINGS. 1. ORIENT GEOSYNTHETIC REINFORCEMENT WITH THE HIGHEST STRENGTH AXIS PERPENDICULAR TO THE WALL FACE. 2. PRIOR TO GEOSYNTHETIC REINFORCEMENT PLACEMENT, PLACE THE BACKFILL AND COMPACT TO THE ELEVATION OF THE TOP OF THE WALL UNITS AT THE ELEVATION OF THE GEOSYNTHETIC REINFORCEMENT. 3. PLACE GEOSYNTHETIC REINFORCEMENT AT THE ELEVATIONS AND TO THE LENGTHS SHOWN ON THESE DESIGN DRAWINGS. 4. LAY GEOSYNTHETIC REINFORCEMENT HORIZONTALLY ON TOP OF THE CONCRETE RETAINING WALL UNITS AND THE COMPACTED BACKFILL SOILS. PLACE THE GEOSYNTHETIC REINFORCEMENT WITHIN ONE INCH OF THE FACE OF THE CONCRETE RETAINING WALL UNITS. PLACE THE NEXT COURSE OF CONCRETE RETAINING WALL UNITS ON TOP OF THE GEOSYNTHETIC REINFORCEMENT. 5. THE GEOSYNTHETIC REINFORCEMENT SHALL BE INTENSION AND FREE FROM WRINKLES PRIOR TO PLACEMENT OF THE REINFORCED FILL SOILS. PULL GEOSYNTHETIC REINFORCEMENT HAND -TAUT AND SECURE IN PLACE WITH STAPLES, STAKES, OR BY HAND -TENSIONING UNTIL THE GEOSYNTHETIC REINFORCEMENT IS COVERED BY 6 INCHES OF LOOSE FILL. 6. THE GEOSYNTHETIC REINFORCEMENTS SHALL BE CONTINUOUS THROUGHOUT THEIR EMBEDMENT LENGTHS. SPLICES IN THE GEOSYNTHETIC REINFORCEMENT STRENGTH DIRECTION ARE NOT ALLOWED. 7. WHERE PIPES INTERFERE WITH GRID LOCATIONS/ELEVATIONS SHOWN ON PLANS, GRID SHALL BE PLACED ALONG SIDE OF, UNDER, AND/OR ABOVE TO MATCH ELEVATIONS ON OTHER SIDE OF PIPE AS SHOWN. ADDITIONAL GRID MAYBE REQUIRED BY WALL DESIGNER ABOVE AND BELOW PIPE, DEPENDING ON ALIGNMENT ANGLE AND SLOPE OF PIPE. 8. DO NOT OPERATE TRACKED CONSTRUCTION EQUIPMENT DIRECTLY ON THE GEOSYNTHETIC REINFORCEMENT. AT LEAST 6 INCHES OF COMPACTED BACKFILL SOIL IS REQUIRED PRIOR TO OPERATION OF TRACKED VEHICLES OVER THE GEOSYNTHETIC REINFORCEMENT. KEEP TURNING OF TRACKED CONSTRUCTION EQUIPMENT TO A MINIMUM. 9. RUBBER -TIRED EQUIPMENT MAY PASS OVER THE GEOSYNTHETIC REINFORCEMENT AT SPEEDS OF LESS THAN 5 MILES PER HOUR. TURNING OF RUBBER -TIRED EQUIPMENT IS NOT ALLOWED ON THE GEOSYNTHETIC REINFORCEMENT. C USE SPECIAL CORNER BLOCKS AS RECOMMENDED BY THE BLOCK MANUFACTURER. .. THE CONTRACTOR SHALL START AND FINISH WALL CONSTRUCTION WITHOUT UNDUE DELAY. IF CONTRACTOR IS INSTRUCTED BY OWNER TO STOP WORK BEFORE COMPLETE INSTALLATION OR IF WALL CONTRACTOR ELECTS TO DELAY WORK FOR ANY REASON, A CAPPING LAYER OF LOW PERMEABILITY SOIL SHALL BE PLACED OVER TOP OF THE DRAINAGE STONE AT LEAST 8 INCHES THICK AND COMPACTED A MINIMUM OF FOUR PASSES WITH A VIBRATORY PLATE COMPACTOR. THIS LAYER IS CONSIDERED TEMPORARY, AND SHALL BE COMPLETELY REMOVED PRIOR TO RESUMING WALL CONSTRUCTION. M. WALL CONTRACTOR SHALL COORDINATE WITH GENERAL CONTRACTOR/OWNER THE FINAL PLACEMENT OF IMPERVIOUS FILL OVER THE DRAINAGE LAYER BEHIND THE WALL. THE IMPERVIOUS FILL IS CONSIDERED PART OF THIS WALL SYSTEM AND SHOULD BE PLACED PRIOR TO WALL CONTRACTOR'S DEMOBILIZATION. 3.07 REINFORCED FILL PLACEMENT A. PLACE FILL IN THE REINFORCED ZONE, SPREAD AND COMPACT IN A MANNER THAT WILL MINIMIZE SLACK IN THE GEOSYNTHETIC REINFORCEMENT. B. ONLY LIGHTWEIGHT HAND -OPERATED COMPACTION EQUIPMENT IS ALLOWED WITHIN 4 FEET OF THE BACK OF THE RETAINING WALL UNITS. IF THE SPECIFIED COMPACTION CANNOT BE ACHIEVED WITHIN 4 FEET OF THE BACK OF THE RETAINING WALL UNITS, REPLACE THE REINFORCED SOIL IN THIS ZONE WITH DRAINAGE AGGREGATE MATERIAL AND COMPACT WITH A MINIMUM 4 PASSES WITH ALIGHT VIBRATORY COMPACTOR AND IN THIN LIFTS. C. MINIMUM COMPACTION REQUIREMENTS FOR FILL PLACED IN THE REINFORCED ZONE. 1. PLACE MATERIALS FOR USE IN THE REINFORCED ZONE IN LOOSE LAYERS NO GREATER THAN 81NCHES FOR SOIL AND NO GREATER THAN 10 INCHES FOR CRUSHED STONE MATERIALS. 2. COMPACTION WITHIN 4 FEET OF THE BACK OF THE SEGMENTAL WALL UNITS SHALL BE PERFORMED WITH LIGHTWEIGHT, HAND -OPERATED COMPACTION EQUIPMENT AND IN THINNER LIFTS IF NECESSARY TO ACHIEVE COMPACTION THROUGHOUT ENTIRE LIFT. 3. COMPACT FILL (REINFORCED AND RETAINED) TO 95 PERCENT OF THE SOIL'S STANDARD PROCTOR MAXIMUM DRY DENSITY (ASTM D698) FOR THE ENTIRE WALL HEIGHT. 4. UTILITY TRENCH BACKFILL: COMPACT UTILITY TRENCH BACKFILL IN OR BELOW THE REINFORCED ZONE TO 95 PERCENT OF THE SOIL'S STANDARD PROCTOR MAXIMUM DRY DENSITY (ASTM D698). S. UTILITIES MUST BE PROPERLY DESIGNED (BY OTHERS) TO WITHSTAND ALL FORCES FROM THE RETAINING WALL UNITS, REINFORCED SOIL MASS, AND SURCHARGE LOADS, IF ANY. 6. WHERE CRUSHED ROCK (OPEN GRADED AGGREGATE SUCH AS VDOT No. 57 STONE) MATERIALS ARE USED IN THE REINFORCED ZONE, COMPACTION SHALL BE PERFORMED BY A MINIMUM OF PASSES WITH A LIGHT VIBRATORY COMPACTOR AND IN THIN LIFTS, NO GREATER THAN 8INCHES. D. AT THE END OF EACH DAYS OPERATION, SLOPE THE LAST LEVEL OF COMPACTED BACKFILL AWAY FROM THE INTERIOR (CONCEALED) FACE OF THE WALL TO DIRECT SURFACE WATER RUNOFF AWAY FROM THE WALL FACE, E. THE WALL AND EARTHWORK CONTRACTORS ARE RESPONSIBLE FOR ENSURING THAT THE FINISHED SITE DRAINAGE IS DIRECTED AWAY FROM THE RETAINING WALL SYSTEM. IN ADDITION, THE CONTRACTORS ARE RESPONSIBLE FOR ENSURING THAT SURFACE WATER RUNOFF FROM ADJACENT CONSTRUCTION AREAS IS NOT ALLOWED TO ENTER THE RETAINING WALL AREA OF THE CONSTRUCTION SITE. 3.08 CAP UNIT INSTALLATION A. APPLY ADHESIVE TO THE TOP SURFACE OF THE UNIT BELOW AND PLACE THE CAP UNIT INTO DESIRED POSITION. B. CUT CAP UNITS AS NECESSARY TO OBTAIN THE PROPER FIT. 3.09 SITE CONSTRUCTION TOLERANCES A. SITE CONSTRUCTION TOLERANCES 1. VERTICAL ALIGNMENT: PLUS OR MINUS 1-112 INCHES OVER ANY 1"OOT DISTANCE, WITH A MAXIMUM DIFFERENTIAL OF 3 INCHES OVER THE LENGTH OF THE WALL. 2. HORIZONTAL LOCATION CONTROL FROM GRADING PLAN a. STRAIGHTLINES: PLUS OR MINUS I-12 INCHES OVER ANY 10-FOOT DISTANCE. b. CORNER AND RADIUS LOCATIONS: PLUS OR MINUS 12 INCHES. Q CURVES AND SERPENTINE RADII: PLUS OR MINUS 2 FEET. B. AESTHETICS OF FINISHED WALL IS NOT RESPONSIBILITY OF WALL DESIGNER 3.10 FIELD QUALITY CONTROL A. INSTALLER IS RESPONSIBLE FOR PROPER INSTALLATION OF SYSTEM COMPONENTS. B. OWNER SHALL ENGAGE DEA TO VERIFY THE CORRECT INSTALLATION OF SYSTEM COMPONENTS IN ACCORDANCE WITH THESE SPECIFICATIONS AND THE DRAWINGS. C. CORRECT ANY WORK WHICH DOES NOT MEET THESE SPECIFICATIONS OR THE REQUIREMENTS SHOWN ON THE WALL DESIGN DRAWINGS. D. HCEA TO PERFORM COMPACTION TESTING OF THE FILL PLACED AND COMPACTED IN THE FOUNDATION, RETAINED, AND REINFORCED FILL ZONES. 1. TESTING FREQUENCY a. MINIMUM ONE TEST FOR EVERY BLOCK COURSE (VERTICAL) OF FILL PLACED AND COMPACTED, FOR EVERY 50 LINEAL FEET OF RETAINING WALL (MINIMUM 2 TESTS PER LIFT RECOMMENDED;) b. VARY COMPACTION TEST LOCATIONS TO COVER THE ENTIRE AREA OF THE REINFORCED SOIL ZONE, INCLUDING THE AREA COMPACTED BY THE HAND -OPERATED COMPACTION EQUIPMENT. IF OPEN GRADED STONE (SUCH AS VDOT No. 57 STONE) IS USED AS MATERIAL IN REINFORCED ZONE, STONE SHALL BE COMPACTED BY MINIMUM FOUR PASSES WITH VIBRATORY COMPACTION EQUIPMENT. 3.11 ADJUSTING AND CLEANING A. REPLACE DAMAGED UNITS WITH NEW UNITS AS THE WORK PROGRESSES. B. REMOVE DEBRIS GENERATED BY WALL CONTRACTOR AND LEAVE ADJACENT PAVED AREAS (AS APPLICABLE) BROOM CLEAN. 3A2 MEASUREMENT, PAYMENT AND CERTIFICATION A. MEASUREMENT OF SEGMENTAL RETAINING WALL SHALL BE ON AN INSTALLED SQUARE FOOT BASIS COMPUTED ON THE TOTAL FACE AREA OF WALL INSTALLED. WALL FACE AREA INCLUDES THE BOTTOM OF THE BASE COURSE TO THE TOP OF THE WALL, AND THE ENTIRE LENGTH OF THE WALL. B. PAYMENT SHALL BE IN ACCORDANCE WITH WALL INSTALLER'S CONTRACT. C. WALL CONTRACTOR SHALL PROVIDE CERTIFICATE LETTER WITHIN ONE WEEK OF WALL COMPLETION STATING THAT THE WALL WAS CONSTRUCTED IN ACCORDANCE WITH THE APPROVED PLANS AND SPECIFICATIONS. WARRANTY FOR THE WALL SHALL BE AS AGREED UPON WITH THE OWNER AND STATED IN THE WALL BUILDER'S CONTRACT. END OF SPECIFICATIONS HILLIS-CARNES ENGINEERING ASSOCIATES HILUS.LARNES ENGINEERING ASSOCIATES IN71 �nR /uANM, VA31005 (!00)550-Yad] Hampton Inn Chsrloft..v.Ile Speci8ca8ons Continued WlE'. AlIG119Tly1pA S,IE[T: IO CF 10 9G1E' Nnl