The Norwesco 15000 Gallon HDPE Vertical Liquid Storage Tank is a stationary, above-ground polyethylene tank built for high-volume liquid storage where a single large vessel beats a bank of smaller ones. At 15,000 gallons it stands 186 inches (15.5 ft) tall on a 165-inch (13.75 ft) diameter footprint, so both the pad and the overhead clearance for offload need to be planned before delivery. It carries a 1.9 specific gravity rating - a structural wall rating that tells you the wall is built to hold dense liquids and leaves ample safety margin for water at roughly 1.0 SG. If you are sizing a site or weighing this against two or three smaller verticals, the Tank Sizing Calculator and Tank Sizing Guide walk through the trade-offs.
Will it work for my site?
This is a vertical storage tank molded from polyethylene, the standard construction for bulk water, fire-reserve, and process-water service. Plan the structure around the loads: filled with water this tank carries roughly 125,100 pounds of contents, and at its full 1.9 SG rating the contents can reach about 237,690 pounds. That contents weight - not the empty tank - is what governs the foundation, so confirm the dry tank weight on the manufacturer's technical drawing and design the pad to the loaded figure across the entire 165-inch base. Because we ship from four regional Norwesco plants, a tank this size sources from whichever is nearest to keep a 13.75-foot-diameter vessel freightable. Our concrete pad sizing guide lays out the ACI 360R-10 framework and the ACI 318 boundary for above-ground polyethylene tanks of this scale.
Specifying and inspecting an HDPE vertical
For a tank this large, two things matter most over its service life: sizing the wall correctly and knowing where it ages. The 15000 Gallon Vertical Liquid Storage Tank buyer's guide covers fitting layout, accessory choices, and what to confirm before you order. Because premature wall failures on HDPE tanks tend to start at the vapor-saturated headspace rather than the wetted liquid side, our guide on HDPE wall thickness at the headspace and its ASTM D1998 sizing logic is worth reading before commissioning. For fire-water reserve and rural water-supply roles, the fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection.
The mistake to avoid
The most common error on a tank this size is under-building the foundation. The 1.9 SG rating tells you the wall can hold a dense liquid, but the pad and site have to carry the resulting weight - up to roughly 237,690 pounds at full rated density. Because no fitting schedule is published here, confirm the outlet sizes, count, and gasket type against the manufacturer's technical drawing on this page or by phone before you order, since relocating a fitting after installation on a 186-inch-tall tank is not practical. Verify every clearance and dimension against the drawing rather than estimating.
This Norwesco vertical storage tank ships LTL freight, quoted live to your ZIP, from the nearest stocking plant - Albertville, AL; Fairfield, TX; St. Bonifacius, MN; or Washington Court House, OH. Get an exact freight number with the Freight Cost Estimator, or call 866-418-1777 to confirm lead time, fittings, and delivery access for a tank of this footprint. Listed before freight.
