HomeMy Public PortalAbout382550M.S.D. STANDARD MANHOLE
FRAME AND COVER.
SURFACE ELEVATION.
* 118" MAX.
* ADJUST TO GRADE WITH APPROVED
GRADE RING. IF THE TOTAL HEIGHT
OF ADJUSTMENT IS 6 INCHES OR
MORE, A MAXIMUM OF TWO (2) GRADE
RINGS IS ALLOWED.
METAL GRADE RINGS ARE NOT ALLOWED
ON NEW CONSTRUCTION.
PLAN
NOTES:
ELEVATION
1/4" STEEL
LIFTING HOOK.
2-#3 REBAR CONT.
(9 INCHES LAP AND TIED)
EXISTING STRUCTURE IN PAVEMENT
MAY BE ADJUSTED WITH ONE
APPROVED METAL GRADE RING.
4" MAXIMUM.
PRECAST TOP
TRANSITION SECTION.
RISER SECTION "B"
1/4" STEEL
LIFTING HOOK.
1- -•-2" CLEARANCE
GRADE RING SECTION
1) IF BRICK IS USED DO NOT PLASTER INSIDE OF MANHOLE.
2) IF MANHOLE IS BURIED MORE THAN 18 INCHES, A RISER SECTION WILL HAVE TO BE ADDED.
3) DIMENSION "A" STOCK GRADE RING HEIGHT OPTIONS. (3 INCHES MINIMUM TO 11 INCHES MAXIMUM.)
4) DIMENSION "B" STOCK RISER SECTION HEIGHT OPTIONS. (12 INCH, 24 INCH, 36 INCH AND 48 INCH)
ADJUST TO GRADE
F____
METROPOLITAN ST. LOUIS SEWER DISTRICT
Standard Details of Sewer Construction
Dr. S.A.M.
Ch. P.W.S.
2009 SHEET 23