HomeMy WebLinkAbout400.17'
1
'B,
NOT TO SCALE
MANHOLE FRAME AND COVER
SEE STD. PLAN 401
ADJUSTMENT RINGS (2" MIN.)
SEE NOTE 6
MORTAR JOINTS) (3/8" MIN.)
SEE NOTE 5
CONE (ECCENTRIC)
RUBBER GASKETED JOINTS IN
ACCORDANCE WITH ASTM C-443
STEPS - POLYPROPYLENE STEPS
SHALL BE INCLUDED
CONCRETE RISER BY PIPE INC.,
OR APPROVED EQUAL.
LADDER -POLYPROPYLENE
SHALL BE ATTACHED TO MANHOLE
MAX. PIPE SIZE - 'E'
CONCRETE SHELF
PRECAST BASE SECTION
OR CAST IN SHELF.
`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 TO BE POLYPROPYLENE SAFETY STEPS.
2. STEPS ARE TO BE IN PLACE BEFORE MANHOLE SECTIONS ARE INSTALLED.
3. CASTING SHALL BE PER STD. PLAN 401.
4. MANHOLE SECTIONS TO BE OF REINFORCED PRECAST CONCRETE.
5. ALL JOINTS BETWEEN THE CONE, RISER RINGS, BRICKS AND CASTING SHALL BE GROUTED.
6. ADJUSTMENT OF THE CASTING TO GRADE SHALL BE ACCOMPLISHED WITH A COMBINATION OF
ADJUSTMENT RINGS, BRICKS AND MORTAR ONLY. BRICKS SHALL BE STAGGERED TO CREATE A RUNNING
BOND OR 1/2 BOND. THE USE OF SHIMS IS PROHIBITED.
7. SANITARY SEWER MANHOLES SHALL HAVE ALL INTERIOR SURFACES, INCLUDING CHANNELING,
COATED (SEALED) WITH A HIGH SOLIDS URETHANE COATING; WASSER MC-AROSHIELD OR
APPROVED EQUAL; COLOR OF COATING SHALL BE WHITE.
8. RUBBER GASKETED JOINTS SHALL BE IN CONFORMANCE WITH ASTM C-443.
9. CHANNEL HEIGHT SHALL BE A MINIMUM OF 3/4 OF THE INSIDE DIAMETER OF THE LARGEST PIPE.
10. CONNECTIONS TO MANHOLE SHALL BE MADE USING GPK ADAPTOR, KOR-N-SEAL BOOTS OR
APPROVED EQUAL.
11. IN UNIMPROVED AREAS, MANHOLES SHALL EXTEND A MINIMUM OF 6" AND A MAXIMUM OF 12"
ABOVE FINISHED GRADE OR MUST HAVE A MINIMUM 2' DIAMETER CONCRETE RINGS POURED AT GRADE.
IN PAVED AREAS, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING.
STD. PLAN - 400.1
PUBLIC WORKS STANDARD SANITARY MANHOLE
DEPARTMENT
SEPTEMBER 2011