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SD-6STANDARD CONSTRUCTION DETAILS DRAINAGE STORM DRAIN DETAILS 1. ALL CONCRETE SHALL BE CLASS "A" (5 BAGS OF CEMENT PER C.Y. AND A MINIMUM COMPRESSIVE STRENGTH AT 28 DAYS OF 3000 PSI). ALL EXPOSED CORNERS SHALL BE CHAMFERED 3/4" UNLESS INCORPORATED INTO SIDEWALK. 2. IN GENERAL, REINFORCING STEEL SHALL BE NO. 4 BARS, ON 12" CENTERS EACH WAY FOR GUTTER, BOTTOM SLAB, ENDS, AND FRONT AND BACK WALLS, AND NO. 4 BARS ON 6" CENTERS EACH WAY FOR TOP SLAB IN BOTH INLETS AND EXTENSIONS. ADDITIONAL REINFORCING STEEL SHALL BE PLACED AROUND MANHOLES AS SHOWN. 3. ALL REINFORCING STEEL SHALL BE OPEN HEARTH NEW BILLET STEEL OF INTERMEDIATE OR HARD GRADE CONFORMING TO ASTM A-15. DEFORMATIONS SHALL CONFORM TO ASTM A-305-56T. 4. ALL REINFORCING STEEL SHALL HAVE A MINIMUM COVER OF 2". 5. 8'-0" OF EXISTING CURB AND GUTTER UPSTREAM AND 4'-0" OF EXISTING CURB AND GUTTER DOWNSTREAM SHALL BE REMOVED AND RE-POURED INTEGRALLY WITH EACH INLET. 6. DIMENSIONS RELATING TO REINFORCING STEEL ARE TO THE CENTER OF BARS. 7. ALL BACKFILL SHALL BE PERFORMED BY MECHANICAL TAMPING. 8. PRECAST INLETS MUST BE APPROVED BY CITY ENGINEER. 9. ALL STORM SEWER MUST BE VIDEO INSPECTED BY CONTRACTOR. CONTRACTOR SHALL FURNISH THE CITY WITH DVD FOR APPROVAL PRIOR TO ACCEPTANCE. 10. ALL STORM DRAIN STRUCTURES 36" DEEP OR DEEPER MUST HAVE FIBERGLASS STEPS INSTALLED. FRAME TO BE ANCHOR BOLTED OR CAST INTO JUNCTION BOX OR INLET ASSEMBLY TO BE FURNISHED WITH A CHAIN RETENTION DEVICE. FRAME AND COVER SHALL BE EAST JORDAN IRON WORKS PRODUCT NO. 35506214, CATALOG NO. 226L BASS LOGO, "106-4L ASSEMBLY WITH LOCK" OR APPROVED EQUAL. S D -0 6 D R A I N 1 .D W G L A S T S A V E D : 9 /3 /2 0 1 5 2 :4 2 P M P R I N T E D : 5 /9 /2 0 1 3 1 2 :0 1 P M