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77000 Gallon Steel Rain Water Tank



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Specifications
Description

77,000 Gallon Steel Rain Water Tank

UR3D512 Rain Water Tank - Technical Specification

General

Diameter: 512”
Shell height: 87”
Overall height: 100”
Nominal Volume: 77,500 Gallons

Tank Structure

Tank Shell
23 gauge corrugated steel panels with G145 galvanized coating
Mechanically galvanized high tensile fasteners

Roof Structure
Welded square HSS support frame with hot dipped galvanized coating
26 gauge corrugated steel cover sheeting

Tank Liner

Liner Material
20mil polyethylene geomembrane
700% elongation at break ASTM D638
2,000min HPOIT ASTM D5885
Mechanically fastened at 80” centers
NSF 61 certified for potable water use

Cushion Layer
Needle free non-woven polyester geotextile underlay

Warranty

20 year “No Leaks” pro rata warranty in accordance with standard terms and conditions

Fittings

Inlet
Either a 20” roof inlet basket with UV guard or a 2” GFN bulkhead inlet in the wall.

Outlet
2” GFN bulkhead with Ni coated ball valve, schedule 40 PVC connection

Drain
2” GFN bulkhead with Ni coated ball valve, schedule 40 PVC connection

Overflow
6” ASA overflow with internal vertical orifice and PVC overflow pipework to ground with flap valve and mosquito screening

Accessories

Access
30” lockable hinged roof access hatch
Light duty removeable galvanized steel ladder

Level Monitoring
Mechanical level indicator

Miscellaneous
Foam roof seal for dust and vermin protection

Environmental Design Parameters

Design Loads: ASCE 7-10

Wind 105mph

Seismic Zone A

Snow 5psf

Steelwork: AISC 360-10



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