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HomeMy WebLinkAboutWWP2703625.11i z EXTEND GEOGRID 18" (TYP) FIBER OPTIC DUCT BANK DO NOT DISTURB N:181654.91 E: 1298199.49 3" OF FILL REQUIRED BETWEEN OVERLAPPING GEOGRID TYP 17' KEYSTONE WALL_. STRETCH GEOGRID UP AND OVER FIBER OPTIC DUCT BANK MINIMUM 6" ABOVE CONDUITS AS REQUIRED (TYP) OFFSET FACE OF WALL 2" �- EAST OF WEST FACE OF CONTROL BUILDING (TYP) i _-- �-- GRAVEL BACKFILL FOR WALLS 6" MIN. FROM BACK FACE OF WALL 4'-8" KEYSTONE WALL PROPOSED BACKUP GENERATOR PAD; PROPOSED CONTROL BUILDING; SEE CIVIL, MECHANICAL, SEE CIVIL, MECHANICAL, ELECTRICAL PLANS ELECTRICAL PLANS w----w----w----w----w----w — ,r — d d d d d - -- d RETAINING WALL NOTES 1, PRIOR TO SETTING ANY BLOCKS OR PLACING ANY ROCK FOR THE WALL FOUNDATION. THE CONTRACTOR SHALL DIG ONE TEST PIT IN EACH THIRD OF THE WALL LENGTH FOR INSPECTION BY THE GEOTECHNICAL ENGINEER. THE CONTRACTOR SHALL PROVIDE 48 HOURS NOTICE TO THE ENGINEER PRIOR TO THE DESIRED INSPECTION TIME. THE GEOTECHNICAL ENGINEER WILL PROVIDE INSTRUCTIONS FOR IDENTIFYING POOR MATERIAL THAT MUST BE OVER -EXCAVATED. 2. BLOCK UNITS SHALL BE KEYSTONE COMPAC UNITS OR APPROVED EQUAL. 3. SHEAR CONNECTORS SHALL BE 1/2-INCH DIAMETER THERMOSET ISOPTHALIC POLYESTER RESIN-PULTRUDED FIBERGLASS REINFORCEMENT RODS OR EQUIVALENT TO PROVIDE CONNECTION BETWEEN VERTICALLY AND HORIZONTALLY ADJACENT UNITS WITH THE FOLLOWING REQUIREMENTS: A. FLEXURAL STRENGTH IN ACCORDANCE WITH ASTM D4476: 128,000 PSI MIN. B. SHORT BEAM SHEAR IN ACCORDANCE WITH ASTM D4475: 6,400 PSI MIN. SHEAR CONNECTORS SHALL BE CAPABLE OF HOLDING THE GEOGRID IN THE PROPER DESIGN POSITION DURING GRID PRE -TENSIONING AND BACKFILLING. 4. CONSTRUCTION EXCAVATION AND WALL PLACEMENT SHALL BE COMPLETED TO MAINTAIN SLOPE STABILITY PARTICULARLY DURING PRECIPITATION EVENTS. CONSTRUCTION SLOPE STABILITY SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. 5. NATIVE SUBGRADE SHALL BE COMPACTED TO FIRM AND UNYIELDING CONDITION AND SHALL BE PROOF ROLLED BY A BACKHOE OR AN EXCAVATOR -MOUNTED PLATE COMPACTOR (OR APPROVED EQUAL) IN PRESENCE OF THE ENGINEER PRIOR TO PLACING LEVELING PAD ROCK (TYP) 6. LOCATIONS WHERE THE BOTTOM OF THE WALL EXPOSES EXISTING LOOSE/SOFT ORGANIC -RICH ALLUVIUM, AND WHERE THE BOTTOM OF THE WALL IS WITHIN 2 FEET OF THIS MATERIAL, A 2-FOOT OVER -EXCAVATION AND REPLACEMENT WITH PERMEABLE BALLAST (WSDOT STD. SPEC. 9-03.9(2)) IS REQUIRED. A SHALLOWER PAD (MIN. THICKNESS 6") MAY BE USED WITH THE ENGINEER'S APPROVAL. OVER -EXCAVATION BELOW THE BOTTOM OF THE 6" LEVELING PAD SHALL BE PAID UNDER BID ITEM "REMOVAL AND REPLACEMENT OF UNSUITABLE FOUNDATION MATERIAL." A CRUSHED SURFACING BASE COURSE (CSBC, WSDOT STD. SPEC. 9-03.9(3)) LEVELING PAD MAY REPLACE THE TOP 3 INCHES OF PERMEABLE BALLAST IN OVER -EXCAVATION AREAS IF DESIRED. T ALL NATIVE AND IMPORTED FILL MATERIAL SHALL BE COMPACTED TO FIRM AND UNYIELDING CONDITION. FOUNDATION SOILS AND ROCK SHALL BE COMPACTED TO 95% MODIFIED PROCTOR. COMPACTABLE NATIVE MATERIAL MAY BE USED FOR WALL BACKFILL WITH ENGINEER'S APPROVAL. 18. SURFACE TREATMENTS IN DISTURBED AREAS TO BE FURNISHED PER CIVIL PLANS. 35' KEYSTONE WALL SEE WALL DETAILS BELOW (TYP) CONTROL BUILDING ROOF LINE __-0HF ,. --_.__.�.�----_._pHP---_ _a_. _.._ _--.._._OHP OHP OHP- OHP OHP r._ a, PIPING CONTINUES UP HILL, NOT SHOWN FOR CLARITY ----w----w----w----w----w—__ `\ d d d--- -- o KEYSTONE WALL PLAN REVISED TO CONFORM TO CONSTRUCTION RECORDS RH2 ENGINEERING INC. 8" BLOCK ELEVATION 1- 12" f 1899 BLOCK PLAN KEYSTONE COMPAC UNIT OR APPROVED EQUAL 4" CAP ELEVATION 10 1 /2" t 18" CAP PLAN KEYSTONE UNIVERSAL CAP UNIT OR APPROVED EQUAL KEYSTONE WALL BLOCK DETAILS NTS TWO 4" CAP UNITS OR ONE 8" CAP UNIT / PROPOSED VALVE VAULT; SEE CIVIL, MECHANICAL, / ELECTRICAL PLANS i 4" CAP UNIT $" COMPAC UNIT NOTE: SECURE ALL CAP UNITS WITH KEYSTONE KAPSEAL OR APPROVED EQUAL. TOP OF WALL STEPS NTS NOTE: GEOGRID IS TO BE PLACED ON LEVEL BACKFILL AND EXTENDED OVER THE FIBERGLASS PINS. PLACE NEXT UNIT. PULL GRID TAUGHT AND BACKFILL. STAKE AS REQUIRED. CIDEV.%JL„%J%J F III GEOGRID CONNECTION DETAIL NTS PROPOSED WET WELL; SEE CIVIL, MECHANICAL, — - 1 i ELECTRICAL PLANS i N:181717.39 E:1298204.41 2'-8" P KEYSTONE WALL i .i MATERIAL NOTES IDENTIFIER MATERIAL WSDOT STD. SPEC. - MATERIAL WSDOT STD. SPEC. - COMPACTION 1Q CRUSHED SURFACING BASE COURSE 9-03.9(3) 2-03.3(14)C (�2 GRAVEL BORROW FOR GEOSYNTHETIC RETAINING WALL 9-03.14(4) 2-03.3(14)C (3 COMMON BORROW OR NATIVE (ENGINEER'S APPROVAL REQ'D) 9-03.14(3) 2-03.3(14)C ® TENCATE MIRAFI MIRAGRID 3XT OR APPROVED EQUAL - - GEOTEXTILE FILTER FABRIC 9-33.2(1) TABLE 2 - CL. A - ® PERMEABLE BALLAST 9-03.9(2) 2-03.3(14)C Q GRAVEL BACKFILL FOR WALLS 9-03.12(2) _F CONTRACTOR RESPONSIBLE FOR CONSTRUCTION SLOPE STABILITY 3 MATCH EXISTING SLOPE, SURFACE TREATMENT PER CIVIL PLANS CAP UNIT a BLOCK UNIT iddp o� 1 /8" -1 /4" 3.5' 6.0' (TYP) 4 8" I PROVIDE 1.5' MINIMUM COVER 6" (TYP) FOR BOTTOM OF WALL (TYP) 26.75' 4" CPE PERFORATED PIPE, NATIVE SOIL ROUTE TO STORM DRAIN (TYP) 6" THICK LEVELING PAD 2' OVER -EXCAVATION AS REQUIRED © (SEE WALL NOTES) TYPICAL MSE KEYSTONE BLOCK WALL SECTION NTS S=36251 I a M 0 w UN zao y ^ N z zP a� ;q o z Wcli zR, N N F N n m N IWI Iml c� 0 o cl) Z O 0 Q tl) `= W W U Lp N N Q a 3 � 75 � U Q W 0 o a W 0 0 > m o � W W z i � z W SCALE: SHOWN �. I:. 2" DRAWING IS FULL SCALE WHEN BAR MEASURES 2" DWG NO SHEET NO.: S 0 -3 13 J7,1_ , Z �= C D -o �rn z m m m a D nz V C W m m c r W r r N z D n D M m o A n cn