HomeMy WebLinkAbout235.10 (replaced 2020)1.USE ADJUSTING BLOCKS AS REQUIRED TO BRING FRAME TO GUIDE.
2.METAL PARTS PREFERRED TO BE STAINLESS STEEL, ALUMINIZED STEEL, OR ALUMINUM. ALL OTHER STEEL PARTS
MUST BE GALVANIZED WITH TREATMENTS 1, 2, OR 5.
3.MUST BE LOCATED FOR ACCESS BY MAINTENANCE VEHICLES.
4.MAY SUBSTITUTE WSDOT SPECIAL TYPE IV MANHOLE (RCP ONLY).
5.TOP SLAB SHALL BE RATED FOR HS-20 LOADING.
6.ALL GRADE RINGS AND CASTINGS SHALL BE SET IN MORTAR IN ACCORDANCE WITH STANDARD SPECIFICATION 9-04.3.
PLAN
SECTION
STANDARD TYPE 2, 60" DIA. CATCH
BASIN (CB) CONCRETE TOP SLAB
36" CMP RISER
FRAME LOCKING LID (MARKED "DRAIN")
MOUNTED OVER 24" DIA. ECCENTRIC OPENING
36"
24" MAX.
6"
24-INCH BOLT LOCKING RING AND COVER. ADJUSTMENT
RINGS AS NECESSARY, PER STANDARD PLAN 204.50
CRUSHED SURFACING TOP COURSE PER
WSDOT STD. SPEC 9-03.9(3) COMPACTED
TO 95% MAX DENSITY (TYP.)
MANHOLE STEPS, 12" O.C.
WELD OR BOLT STANDARD MANHOLE STEPS
DETENTION TANK
RISER, 36" DIA. MIN., SAME MATERIAL AND
GAUGE AS TANK WELDED OR FUSED TO TANK
NOTES:
LADDER
MAINTAIN 1" GAP BETWEEN BOTTOM OF
SLAB AND TOP OF RISER. PROVIDE
PLIABLE GASKET TO EXCLUDE DIRT
PLACE CEMENT MORTAR SEAL BETWEEN
TOP SLAB AND MANHOLE, SEE NOTE 6
Ø24"
DETENTION TANK ACCESS
STD. PLAN - 235.10
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
9/28/2018 | 9:45 AM PDT