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ECOLOGY BLOCK SITE RETAINING WALL Ecology Block Site Retaining Wall 8 Martin Lane, Salem, MA prepared by: Structures North Consulting Engineers, Inc. Attn: Mr. Edward Moll, P.E. 60 Washington Street, Suite 401 Salem, MA 01971-8560 (978) 745-6817 for: Bartlett Steadman Co., Inc 67 R Village Street Marblehead, MA 01945 Construction Documents Index: Outline Specifications 2 pages Retaining Wall Key Plan SKS-1 Retaining Wall Elevations SKS-2 to SKS-4 Retaining Sections SKS-5, SKS-6 � H OF 26 October 2018 E Ano °yam IIA U1 L g SOMAL Edward H. Moll 1I, P.E. MA Reg. No. 33718 Ecology Block Retaining Wall Structures North Consult.Engrs. 8 Martin Lane,Salem,MA 26 October 2018 Page 1 of 2 ECOLOGY BLOCK RETAINING WALL INSTALLATION GENERAL NOTES 1. CONTRACTOR SHALL EXCAVATE TO THE LINES AND GRADES SHOWN ON THE CONSTRUCTION DRAWINGS. THE CONTRACTOR SHALL BE CAREFUL NOT TO DISTURB THE BASE BEYOND THE LINES INDICATED. OVER-EXCAVATED AREAS,SUCH AS FOR THE REMOVAL OF OBSTRUCTIONS, SHALL BE FILLED WITH SUITABLE BASE OR BACKFILL MATERIAL AND COMPACTED TO 95 PERCENT STANDARD PROCTOR. 2. THIS RETAINING WALL IS A GEOGRID REINFORCED WALL,OR MSE, MECHANICALLY STABILIZED EARTH WALL, UTILIZING LAYERS OF SOIL REINFORCEMENT BETWEEN THE BLOCK AND THE SOIL MASS DIRECTLY BEHIND THE WALL. 3. WALL DESIGN SURCHARGE IS 100 PSF. IN NO CASE SHOULD HEAVY EQUIPMENT BE ALLOWED WITHIN 6'-0" OF THE WALLS. DESIGN IS BASED ON NCMA DESIGN MANUAL FOR SEGMENTAL RETAINING WALLS, CURRENT EDITION. 4. PROVIDE 6" LEVELING PAD DIRECTLY BENEATH THE BASE BLOCK AND EXTENDING 6" BEYOND THE INSIDE AND OUTSIDE FACES. LEVELING PAD IS TO CONSIST OF WELL-GRADED GRANULAR MATERIAL THAT ALLOWS FOR DRAINAGE BUT HAS ENOUGH FINES TO ALLOW FOR PROPER COMPACTION. SOME EXAMPLES OF LEVELING PAD MATERIAL(BY REGIONAL NAME) INCLUDE: ROAD BASE, CLASS 5,3/-INCH MINUS,AND CRUSH-AND-RUN. BASE MATERIAL SHALL BE COMPACTED SO AS TO PROVIDE A SMOOTH, HARD SURFACE ON WHICH TO PLACE THE FIRST COURSE OF UNITS. 5. THE SOIL MATERIAL BELOW THE LEVELING PAD IS TO BE CHECKED BY QUALIFIED PERSONNEL TO CONFIRM CAPACITY TO SUPPORT THE MASS CONCRETE BLOCK RETAINING WALLS. 6. A VERTICAL COLUMN OF DRAINAGE MATERIAL,SUCH AS V CRUSHED STONE, IS TO BE PROVIDED IMMEDIATELY BEHIND THE WALL,AND IS TO BE SEPARATED FROM ADJACENT SOIL USING FILTER FABRIC. 7. USE ONLY THE GEOSYNTHETIC REINFORCEMENT(GEOGRID) TYPE SPECIFIED. INSURE THAT THE REINFORCEMENT IS CUT TO THE PROPER LENGTHS AS INDICATED ON THE FINAL ENGINEERED PLAN. GEOGRID IS UNI- AXIAL (STRONGER IN ONE DIRECTION)AND MUST BE LAID WITH THE MANUFACTURER'S EDGE PERPENDICULAR TO THE WALL FACE. 8. THE GEOGRID SHOULD BE LAID ON THE TOP OF THE BLOCKS 2" FROM THE FRONT FACE AND SHALL EXTEND BACK OVER A COMPACTED, LEVEL 3 Ecology Block Retaining Wall Structures North Consult. Engrs. 8 Martin Lane,Salem, MA 26 October 2018 Page 2 of 2 BACKFILL TO THE LENGTH REQUIRED. PLACE A GROUT BED ABOVE AND BELOW THE GEOGRID AND SANDWICH THE REINFORCEMENT UNDER THE NEXT COURSE OF BLOCKS TO ANCHOR IN PLACE.THE NEXT COURSE OF UNITS SHALL BE PLACED SUCH THAT THE GEOGRID IS DEFORMED OVER THE TONGUE AND GROOVE KEY.THEN PULL THE TAIL(LOOSE END)OF THE GRID TAUT TO REMOVE SLACK OR WRINKLES. 9. STAKE THE TAIL OF THE GEOGRID PRIOR TO PLACING BACKFILL MATERIAL TO MAINTAIN TENSION.WHEN PLACING BACKFILL OVER A LAYER OF GEOGRID,START JUST BEHIND THE DRAINAGE AGGREGATE AND FILL TOWARD THE TAIL OF THE GEOGRID. AVOID OPERATING BACKFILL EQUIPMENT DIRECTLY ON THE TENSIONED GEOGRID AS MUCH AS POSSIBLE.A MINIMUM OF 6-INCHES OF BACKFILL SHOULD BE PLACED OVER THE GRID BEFORE DRIVING ANY EQUIPMENT ON TOP OF THE GRIDS.AVOID SHARP TURNING AND SUDDEN BRAKING WITH ALL TYPES OF EQUIPMENT TO AVOID DISPLACING,WRINKLING OR DAMAGING THE GEOGRID REINFORCEMENT. 10. REINFORCED SOILS USED IN THE BACKFILL BY GRADATION SHALL HAVE NO MORE THAN 35 PERCENT PASSING THE NUMBER 200 SIEVE.ALL REINFORCED AND RETAINED SOIL BACKFILL MATERIALS SHALL BE COMPACTED TO A MINIMUM 95%STANDARD PROCTOR DENSITY. END OF INSTALLATION GENERAL NOTES 4 ` DRAIN � � , D102 EASEMENT ',94. 108 -- 1 W ECOLOGY BLOCK © R TAINING WALL (RED) ! _ PROPOSED _12' -- DWELLING ! ', 1ST FLR 112. CELLAR 103 � . 2 i KS- t 1TTEER ERV I GARAGE 102.5 ' w� t 35' J icy Cj P T to9— vl- i I " j N W ECOLOGY BLOCK R TAINING WALL (RED) DR'I VEWAY { 972 C) "o Y r' Ks- 125.76' 1 HEt COLOY BLOCK N67'10'30"E E R TAINING WALL (RED) 1� E104 102 100 00 Cd Z 3 3 00 RETAINING WALL KEY PLAN g26 Oct. 2018 MARTIN LN. V = SALEM, MA SKS-1 STPUGUES HHT9 SHEETPio _� OF 'CONSULTING ENGINEERS, INC. CALCULATED BY � DATE p 0B O X 8 5 6 0 SAI. FM. MA 0 1 9 7 1 CHECKED By pdTE__ FH 07a 14].6a 1 7 rAX 97S 7-0_:- 6067 - W W W S I HLICTUHCS NORi H C O M SCALE I'(t LA T r 7 1 J C. PROOL CT 207 SIT" U \T V D I S HOPT9 SHFFT NO CONSULTING I.NGINEERS, INC. CALCULATEDBY __ - �'" - \ DATE_ _ P.O. BOX 8560 S A L F M, M A O a 9 7 1 CHECKED BY" DATE PH 978 749.8811 FAX 97H 745.6067 W W W ST R U C T Ufi E S - NOH1 H COM SCALE — — -- r f `J 11� t� LJ t(� 'j � 4 r � V � J J L C PRDDUCT 207 STPUGURS H SHEET NO �r /.'�—�' DF_._ CALCULAI ED HY __.._ DATE_-....... �� ' CONSULTING ENGINEERS, INC. P.O. 24 H O X 8 5 'o 0. S At E M NO A 01 9 7 1 CHECKED 0Y __.....-_ _ DATE _ PH 978 746 Gd17 FAX 979 74 F� f>Uti7 WWW ST HUC:T UHE9 - NDRTH COM " SCALE __....._-- _..__.. l a�- . __---, l c) cid 94 C PRODUCT 207 Structures North 91M® JOB CONSULTING ENGINEERS, INC. S►IEETND... _ __.. .. _______ OFPO. BOX 8W, SALEM, MA .__.__ _. 01071 CALCULATED BY _. DATE_ 40 PH 979.745,6917 FAL(97al,715.606T CMECKEDBY—_.—. _ DATE___.._...._..-._ SCALE 00 C-cow4� yR,toc� 2 4P� �2y L 3s/• P'�'s'sr�l�-� � LSi�mer� tv aG- VRjLl'kGvD S .5 vsv INC-^lz lt>�, WA LL D MMKIT P Structures North 9O110M CONSULTING ENGINEERS, INC. SHEET NO �~ Of -T5. BOX 95M KXCMT.'MX 01171 CALCULATED BY- DATE PH 9MM6817 FAX 979.745.6087 CHECKED BY DATE, SCALE 96 I;xT 6e7 4GOFAf� L r Cou 16J� +9 � C- T WALL •� I31:; Ali•-(�-�r t lad � ?...�o s��.Jl, C-LA r D F'A3WCT?0r