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HomeMy Public PortalAboutOutsideFoulwaterDropManhole(Alternate)PAYLINE WIDTH NOTES: 4" MINIMUM CLASS "A" CONCRETE ENCASEMENT. 4-#4 REBARS BOTTOM FACE. NOTE 2 4' 2' MIN. NOTE 4 4" ROWLOCK ARCH NOTE 1 LONG RADIUS ELBOW. (NOTE 6) LINE OF ACTUAL EXCAVATION. NOTES 2 & 3. 1/2" MIN. 1 TO 3 CEMENT TO SAND MORTAR MIX. CLASS "A" CONCR TE STANDARD MANHOLE CONSTRUCTION. 4" ROWLOCK ARCH 5 1/2" 42" OR 48" N INVERT SHELF STANDARD STEPS AT 16" CENTERS 1/2" MIN. 1 TO 3 SAND TO CEMENT MORTAR MIX. 4" ROWLOCK ARCH D=DIAMETER OF LARGEST PIPE. CLASS "A" CONCRETE APPROVED PATENTED WATER STOPS REQUIRED FOR PLASTIC PIPE. ELEVATION PLAN SECTION 1/2" MIN. 1 TO 3 CEMENT TO SAND MORTAR MIX. (ALL BRICK STRUCTURES) PLACE STEPS ON UNOBSTRUCTED WALL. 1) IF LINE OF ACTUAL EXCAVATION EXTENDS BEYOND LINE OF DROP MASONRY, FILL EXCESS EXCAVATED SPACE WITH CONSTRUCTION MATERIAL OF DROP OR PACK WITH COMPACTED CRUSHED LIMESTONE TO BASE OF CLASS "A" CONCRETE ENCASEMENT. 2) IF EXCAVATED SPACE OUTSIDE OF DROP PIPE MASONRY EXCEEDS ONE (1) FOOT, REINFORCE SEWER PIPE ENCASEMENT WITH A MINIMUM OF 4-#4 REBARS FOR LENGTH OF ENCASEMENT. 3) MASONRY ENCASEMENT OF DROP PIPE SHALL BE BONDED AND PLACED INTEGRALLY WITH MANHOLE MASONRY. 4) DIAMETER OF DROP PIPE FOR COMBINED SEWERS AND SANITARY SEWERS IS SAME AS INCOMING 8", 10" OR 12" PIPE SEWER UNLESS OTHERWISE SHOWN ON PROJECT PLANS. FOR SEWERS 15" THROUGH 24", A DROP IS NOT TO BE USED. CONNECT TO MANHOLE AT OR WITHIN 24" ABOVE IT'S FLOWLINE. 5) NEW OUTSIDE DROP ON EXISTING MANHOLE REQUIRES #4 REBARS SPACED VERTICALLY AT 24" C-C, ONE ON EACH SIDE OF THE DROP PIPE, GROUTED INTO 2" DIA. HOLES THROUGH MANHOLE WALL. (MINIMUM LENGTH OF REBARS 18"). 6) NEW OUTSIDE DROP ON EXISTING MANHOLE REQUIRES THAT THE FLOWLINE OF THE NEW DROP PIPE ELBOW BE CONSTRUCTED AT THE SAME ELEVATION AS THE SPRINGLINE OF THE EXISTING SEWER MAIN AT THE CENTER OF THE EXISTING MANHOLE. A CLASS "A" CONCRETE FILLET AND INVERT SHALL BE CONSTRUCTED FOR DROP PIPE. OUTSIDE FOULWATER DROP MANHOLE (ALTERNATE) METROPOLITAN ST. LOUIS SEWER DISTRICT Standard Details of Sewer Construction Dr. RGW/SAM Ch. J.C.K. 2009 SHEET 17