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