CITY OF TOMBALL
STANDARD SPECIFICATION
PRECAST CONCRETE MANHOLES
02082-1
02-01-08
Section 02082
PRECAST CONCRETE MANHOLES
PART 1 G E N E R A L
1.01
SECTION INCLUDES
A.
Precast concrete manholes for sanitary sewers, storm sewers, and water lines.
B.
Precast concrete sanitary sewer manholes with PVC liner where corrosion resistant manholes
are specifically indicated in Drawings.
C.
Pile-supported concrete foundation used for unstable sub grade treatment for manhole base.
1.02
MEASUREMENT AND PAYMENT
A.
Unit Prices.
1. Payment for manholes is on unit price basis for each manhole installed
2. Payment for shallow depth manholes is on a unit price basis for each manhole installed.
Shallow manholes have a depth of 4 feet or less measured from top of cover to sewer
invert
3. Payment for normal depth corrosion resistant manholes is on a unit price basis for each
manhole installed
4. Payment for standard manhole drops is on a unit price basis for each drop installed.
Standard manhole drops include both internal and external drops.
5. Payment for watertight manholes, including external vent pipe is on a unit price basis for
each.
6. Payment for air-release manhole with valves and fittings installed is on a unit price basis
for each manhole with air-release valves and fittings installed.
7. Payment for pile-supported concrete foundation used for unstable sub grade treatment for
manhole base is on a unit price basis for each foundation installed.
8. Pay estimates for partial payments will be made as measured above according to the
following schedule for sanitary sewer manholes:
a. Estimate for 90 percent payment will be authorized when the manhole is completely
installed and surrounding soil backfilled
CITY OF TOMBALL
STANDARD SPECIFICATION
PRECAST CONCRETE MANHOLES
02082-2
02-01-08
b. Estimate for 100 percent payment will be authorized when manhole has been tested
as specified in Section 02533 - Acceptance Testing fo