TankTechnical_Specification.pdf

United States Department of the Interior

FISH AND WILDLIFE SERVICE

Allegheny National Fish Hatchery 6616 Hemlock RD Warren PA 16365

Specifications For 15ft fiberglass tanks and control boxes

Date: July 14, 2021

Contractor shall furnish the following:

8 - 15 ft 6 section fiberglass tanks with side skimmer box and skirt.

4 - fiberglass water regulating cylinders in accordance with the specifications listed below.

Sections: 2 bottom halves, 4 side wall pieces Dimensions Inside: 180” Inner Diameter x 57” Deep Dimensions Outside: 205.125” (at longest point) x 62.75” Deep Gel Coat Interior: Light Gray. Minimum 20 mils Gel Coat Exterior: Gray. Minimum 20 mils Volume: 5994 Gallons

Construction Specifications:

Tank shall be constructed of varying hand laid layers of 1.5 oz mat glass fiber reinforcement, with 24oz woven roving glass fiber reinforcement, core materials, and a single corrosion resistant isophthalic resin throughout. The inner surface layer of each tank shall consist of a smooth polished layer of corrosion resistant isophthalic gel coat having a total finished thickness of no less than 20 mils. Minimum overall wall thickness is 3/16”.

Fittings/Screens Bottom center drain shall consist of circular floor sump with 16” aluminum mesh plate with ¼” holes. Floor sump will be integrated into tank bottom. Discharge fitting to be 2” Sch40 coupling glassed into center bottom of floor sump.

Skimmer box shall be 30” wide x 24” deep and extend from the tank approximately 20”. A removable aluminum exclusion screen with screen tanks will be provided and will sit flush to the inside of the tank at the entrance to the skimmer box. The skimmer box shall be furnished with keyway made from polyethylene stock to receive a weir board constructed of fiberglass to control water level in tank. A single 6” Sch40 coupling discharge will be provided.

15ft Tank Specifications

Skirt The skirt shall be incorporated into the bottom sections of the tank. It shall create a self supporting tank that has 8" of free space between the floor and the bottom of the tank for plumbing. The skirt shall be constructed with sufficient support to hold the weight of the tank and 6000 gallons of water.

Assembly Sectional tank construction includes 3” flanges. Flanges to be predrilled every 3.5”. A gasket and Dow Corning 795 structural silicon sealant shall be included to seal the tank seams. 316 stainless steel hardware for bolting flanges shall be included.

Dimensions Inside: 24” Inner Diameter x 57” Deep Gel Coat Interior: Light Gray. Minimum 20 mils Gel Coat Exterior: Gray. Minimum 20 mils

Construction Specifications:

Tank shall be constructed of varying hand laid layers of 1.5 oz mat glass fiber reinforcement, with 24oz woven roving glass fiber reinforcement, core materials, and a single corrosion resistant isophthalic resin throughout. The inner surface layer of each tank shall consist of a smooth polished layer of corrosion resistant isophthalic gel coat having a total finished thickness of no less than 20 mils. Minimum overall wall thickness is 3/16”.

Fittings/Screens Water regulator to receive water flow from 2 6000 gallon tanks. Flow inlet fittings to be 2" Sch 40 and Discharge fittings shall be 3" Sch 40. Internal Fittings to accept 2" Sch 40 standpipes

24" Water regulating cylinder specifications

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