SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
E. Capacities and Characteristics:
1. System Capacity: 2,000 gpm
2. Number of Pumps: Two.
3. Each Pump:
a. Capacity: 1,000 gpm.
b. Solids Handling Capability: 3 inches minimum.
c. Total Dynamic Head: 40 feet.
d. Speed: 1,185 rpm
e. Discharge Pipe Size: 8” NPS.
f. Motor Horsepower: 30 hp
g. Electrical Characteristics:
1) Volts: 480.
2) Phases: Three.
3) Hertz: 60.
h. Unit Electrical Characteristics:
1) Full-Load Amperes: 35 Amps
4. Alternator Control Required: Yes.
5. Guide-Rail Supports Required: Yes.
2.3 SEWAGE PUMP BASINS
A. Description: Factory fabricated basin with sump, pipe connections, and separate cover.
B. Sump: Fabricate watertight, with sidewall openings for pipe connections.
1. Material: Fiberglass wet well and integral valve vault shall be in accordance with the
definitions given in American Society for Testing and Materials (ASTM) designations
D3753-99. The resin used shall be of a commercial grade and shall be evaluated as a
laminate by test or determined by previous service to be acceptable for the environment.
The resins used may contain the minimum amount of fillers or additives required to
improve handling properties. Up to 5% by weight of thixotropic agent that will not
interfere with visual inspection may be added to the resin for viscosity control. The
laminate shall consist of an inner surface, an interior layer, and an exterior layer of laminate
body. A White GelCoat shall be the finishing surface for the interior of the Wet Well /
Valve Vault. The Wet Well / Valve Vault must be designed to withstand wall collapse
based on the assumption of hydrostatic type loading by backfill with a density of 120
lb./ft. 3 . The tank wall laminate must be constructed to withstand or exceed. The Wet Well
shall incorporate an integral Hopper Bottom design that directs solids into the center of the
wet well and into the suction of the pumps.
2. Reinforcement: The Wet Well bottom of 8ft diameter or larger Wet Wells shall be
constructed of .50 inch A36 steel plate minimum. 6-in I-beams shall be welded to the .50
inch steel plate to add structural integrity and reduce the possible deflection caused from up
Contract 44577 KW Annex – Rev. E 44577-CSI-SPEC-001 221329-6