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MANHOLE FRAME AND COVER
6" l SEE STD. PLAN 401
12" MAX. ADJUSTMENT RINGS AND MORTAR JOINTS
10440.1
SEE NOTE 3
D, FIRST STEP SHALL BE A MAXIMUM OF 18"
• 1 BELOW THE COVER.
CONE (ECCENTRIC)
STEPS — POLYPROPYLENE STEPS
•.'� 6-1/2"~I —•' SHALL BE INCLUDED
r
5' MIN. ; .
RUBBER GASKETED JOINTS SEE NOTE 5
• � c
12" (TYP) •.
• + .� IF REQUIRED, LADDER—POLYPROPYLENE
SHALL BE ATTACHED TO MANHOLE
MAX. PIPE SIZE — 'E'
' s
.•„ SHELF AND CHANNEL SHALL BE
•• 3000 PSI CONCRETE
1%
•. o . a' PRECAST BASE SECTION
OR CAST IN SHELF.
• i••r!••'•hetishir!•e•r•tr!• %•s:!•" 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 MUST HAVE AN AT—GRADE, MINIMUM 2'—WIDE CONCRETE RING POURED AROUND
THE COVER. IN PAVED AREAS, COVER MUST SLOPE TO MATCH PAVING.
9. MANHOLES OVER 20' DEEP SHALL BE A MINIMUM OF 60" IN DIAMETER.
STD.PLAN-400.1
PUBLIC WORKS gnedby:
DEPARTMENT STANDARD SANITARY MANHOLE Martin Pastucli'26/202C I 12:
F N T O M°tertf , 449D... DATE