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CLASS "A" CONCRETE
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42" or 48" ROUND
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PLAN
SECTION A —A
KEYWAY
A
SHAPE INVERT WITH
CLASS "A" CONCRETE.
THE MINIMUM INSIDE DIAMETER FOR THE RISER SECTIONS SHALL BE 42" FOR ALL STORM SEWERS.
THE MINIMUM INSIDE DIAMETER FOR SANITARY SEWERS IS 48 INCHES.
MANHOLE ON PIPE SEWER
27" THRU 42" (ALTERNATE)
METROPOLITAN ST. LOUIS SEWER DISTRICT
Standard Details of Sewer Construction
Dr. DAB/SAM
Ch. J.C.K.
2009
SHEET 12