HomeMy WebLinkAbout400.2 DocuSign Envelope ID:345B681D-914F-4F2D-AB59-7C192D3B78A3
/ MANHOLE FRAME AND COVER
6„ tSEE STD. PLAN 401
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ADJUSTMENT RINGS AND MORTAR JOINTS
12" MAX. SEE NOTE 3
I24" FIRST STEP SHALL BE A MAXIMUM OF 18"
t. '. BELOW THE COVER.
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PRECAST CONCENTRIC CONE
A RUBBER GASKETED JOINTS
c ,i
• SEE NOTE 5
5' OR LESS
+4 STEPS — POLYPROPYLENE STEPS
. a 12" (TYP) SHALL BE INCLUDED
} u . • IF REQUIRED, LADDER—POLYPROPYLENE
SHALL BE ATTACHED TO MANHOLE
—•—'C' i
I MAX. PIPE SIZE — 'E'
OPSHELF AND CHANNEL SHALL BE
1% 3000 PSI CONCRETE
4�' PRECAST BASE SECTION OR
i _ ...
' i CAST IN PLACE BASE WITH CITY
�.� . APPROVAL.
•e•.wr.4!s! Etel.ter •L,•'t•1% •%••!•' COMPACTED SUBGRADE WITH 6"
CRUSHED ROCK OR ADDITIONAL
NOT TO SCALE MATERIAL SUITABLE TO
SUPPORT STRUCTURE.
'A' `B' `C' `D' `E'
48" MH 48" 6" MIN. 5"MIN _ 24" MIN. 21" I.D.
54" MH 54" 8" MIN. 5.5" MIN. 24" MIN. 24" I.D.
60" MH 60" 8" MIN. 6" MIN. 42" MIN. 30" I.D.
NOTES:
1. STEPS ARE TO BE IN PLACE BEFORE MANHOLE SECTIONS ARE INSTALLED.
2. MANHOLE SECTIONS TO BE OF REINFORCED PRECAST CONCRETE IN CONFORMANCE WITH ASTM C-478.
3. ADJUSTMENT OF THE CASTING TO GRADE SHALL BE PER STD PLAN 106. THE USE OF SHIMS IS PROHIBITED.
4. SANITARY SEWER MANHOLES SHALL HAVE ALL INTERIOR SURFACES, INCLUDING CHANNELING,
FACTORY—COATED (SEALED) WITH A HIGH SOLIDS URETHANE COATING; WASSER MC—SHIELDCOAT 100 OR
APPROVED EQUAL; COLOR OF COATING SHALL BE WHITE.
5. RUBBER GASKETED JOINTS SHALL BE IN CONFORMANCE WITH ASTM C-443.
6. CHANNEL WIDTH AND HEIGHT SHALL EQUAL THE INSIDE DIAMETER OF THE LARGEST PIPE.
7. CONNECTIONS TO MANHOLE SHALL BE MADE USING KOR—N—SEAL BOOTS OR APPROVED EQUAL.
8. IN UNIMPROVED AREAS, MANHOLES SHALL EXTEND A MINIMUM OF 6" AND A MAXIMUM OF 12"
ABOVE FINISHED GRADE OR SHALL HAVE AN AT—GRADE, MINIMUM 2'—WIDE CONCRETE RING POURED AROUND
THE COVER. IN PAVED AREAS, COVER MUST SLOPE TO MATCH PAVING.
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SHALLOW SANITARY MANHOLE I 12:5
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