The Chem-Tainer TC8657IA is a 1,150-gallon vertical liquid storage tank molded in natural white polyethylene, standing 57 inches tall on an 86 x 86 inch round footprint. It carries a 1.9 specific-gravity rating, the heavy-duty structural tier for a vertical storage tank, and it ships from Merced, California. If you are sizing a vertical tank for bulk water, this is a wide, low-profile vessel that holds a lot of volume without much height.
Will this tank work for your job?
Full of water, the TC8657IA carries about 9,591 pounds of contents. The 1.9 specific-gravity rating means the tank wall is built to hold liquids substantially denser than water, up to a maximum rated contents weight of roughly 18,223 pounds. That structural headroom is what separates this 1.9-SG build from a standard-duty water tank: it is rated for the weight of heavier liquids, not just the volume. At 86 x 86 inches and only 57 inches of height, it sits low and stable, which is a practical advantage where overhead clearance or wind exposure matters. Be clear on one point, though: a high SG rating is a weight rating only. It does not, by itself, clear this tank for any specific chemical. Chemical service is a separate question that depends on polyethylene compatibility with that exact liquid and concentration, plus fittings and gaskets matched to it.
Mounting, pad, and fittings
A tank this size needs a flat, fully supported base. The 86 x 86 inch round footprint must sit on a level pad rated to carry the full contents weight, not just the empty tank. Our concrete pad sizing guide for above-ground polyethylene tanks walks through the ACI 360R-10 framework for getting that pad right. If you are still settling on capacity, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide. For fire-protection reserve at rural or remote sites, our fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection, and if this is going into a grey-water, rainwater, or HVAC-condensate aggregation train, our industrial water reuse tank topology guide covers quality-banded storage trains. See the technical drawing on this page for fitting locations and exact dimensional callouts, and select your gasket and elastomer material to match the stored liquid before you plumb.
The mistake to avoid
The most common error on a tank like this is treating the 1.9 specific-gravity rating as a license to skip the pad math. The contents weight climbs fast: a 1.9-SG liquid puts roughly 18,223 pounds on the pad versus 9,591 pounds for water. Size your foundation, anchoring, and outlet plumbing for the actual liquid you intend to store, not for water alone. If you are weighing this against other vertical storage tanks before you commit, our Snyder vs Norwesco vs Chem-Tainer vertical storage tank comparison breaks down how the major brands stack up.
This vertical storage tank ships by LTL freight from the Chem-Tainer plant in Merced, California, quoted live to your ZIP. Get an exact number from our Freight Cost Estimator, or call 866-418-1777 to talk through delivery, offload, and the right tank for your application.
