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Above-ground polyethylene tank installations stand or fall on the foundation. The tank shell distributes load axisymmetrically across the bottom, but the concrete pad has to deliver uniform support, r…

A 5,000-gallon polyethylene vertical storage tank fully loaded with water weighs 41,750 pounds. With a high-specific-gravity chemistry like 50% sodium hydroxide (SG 1.53) the same tank weighs 63,879 p…