20181245 Ver 2_TSC_9_30_20-SWP.3_20201005

RIP RAP PIPE OUTLETNOTES:1. L = 6' FOR FES-12, L= 16' FOR FES-12. STONE MATERIAL IS CLASS 1 RIP RAP3. d = 2 FT4. MIRAFI N-SERIES NON-WOVEN FILTERFABRIC INSTALLED BETWEEN THE RIPRAPAND SOIL FOUNDATION.PLAN VIEWSECTION 'A-A'dLRECOMMENDED MINIMUM TRENCH WIDTHS© MINIMUM RECOMMENDED COVER BASED ONVEHICLE LOADING CONDITIONS*** VEHICLES IN EXCESS OF 75T MAY REQUIRE ADDITIONAL COVER**SEE BACKFILL REQUIREMENTS IN NOTE 6.NOTES:1. ALL PIPE SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH ASTM D2321, "STANDARD PRACTICEFOR UNDERGROUND INSTALLATION OF THERMOPLASTIC PIPE FOR SEWERS AND OTHER GRAVITY FLOWAPPLICATIONS", LATEST ADDITION2. MEASURES SHOULD BE TAKEN TO PREVENT MIGRATION OF NATIVE FINES INTO BACKFILL MATERIAL,WHEN REQUIRED.3. FOUNDATION: WHERE THE TRENCH BOTTOM IS UNSTABLE, THE CONTRACTOR SHALL EXCAVATE TO ADEPTH REQUIRED BY THE ENGINEER AND REPLACE WITH SUITABLE MATERIAL AS SPECIFIED BY THEENGINEER. AS AN ALTERNATIVE AND AT THE DISCRETION OF THE DESIGN ENGINEER, THE TRENCHBOTTOM MAY BE STABILIZED USING A GEOTEXTILE MATERIAL.4. BEDDING: SUITABLE MATERIAL SHALL BE CLASS I, II OR III. THE CONTRACTOR SHALL PROVIDEDOCUMENTATION FOR MATERIAL SPECIFICATION TO ENGINEER. UNLESS OTHERWISE NOTED BY THEENGINEER, MINIMUM BEDDING THICKNESS SHALL BE 4" (100mm) FOR 4"-24" (100mm-600mm); 6" (150mm)FOR 30"-60" (750mm-1500mm).5. INITIAL BACKFILL: SUITABLE MATERIAL SHALL BE CLASS I, II OR III IN THE PIPE ZONE EXTENDING TOTHE CROWN OF PIPE. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR MATERIALSPECIFICATION TO ENGINEER. MATERIAL SHALL BE INSTALLED AS REQUIRED IN ASTM D2321, LATESTEDITION.6. MINIMUM COVER: MINIMUM COVER, H, IN NON-TRAFFIC APPLICATIONS (GRASS OR LANDSCAPE AREAS)IS 12" FROM THE TOP OF PIPE TO GROUND SURFACE. ADDITIONAL COVER MAY BE REQUIRED TOPREVENT FLOTATION. FOR TRAFFIC APPLICATIONS, MINIMUM COVER, H, IS 12" UP TO 48" DIAMETER PIPEAND 24" OF COVER FOR 60" DIAMETER PIPE, MEASURED FROM TOP OF PIPE TO BOTTOM OF FLEXIBLEPAVEMENT OR TO TOP OF RIGID PAVEMENT. FOR TRAFFIC APPLICATIONS WITH LESS THAN FOUR FEETOF COVER, EMBEDMENT OF THE PIPE SHALL BE USING ONLY A CLASS I OR CLASS II BACKFILL.MAXIMUM RECOMMENDED COVER BASED ON VECHICLE LOADING CONDITIONSFILL HEIGHT TABLE GENERATED USING AASHTO SECTION 12,LOAD RESISTANCE FACTOR DESIGN (LRFD) PROCEDURE WITHTHE FOLLOWING ASSUMPTIONS:NO HYDROSTATIC PRESSURE,UNIT WEIGHT OF SOIL (Ys) = 120 PCFPO BOX 838
SYLVA, NC 28779
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N.C. FIRM LICENSE NO. C-2996
STILLWELL
ENGINEERING, P.A.
REVISIONS
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