Typically, the capacity for storage pig tank trailers ranges from 4000 cubic feet to 4100 cubic feet. These trailers have square shaped pads (4 or 5) on each side to allow installation of the corkscrew legs. Depending on the trailer configuration, you can store products up to 500,000 lbs. The trailer allowing 4 pairs of corkscrew legs (8 total) allows storing 400,000 lbs of product while the one with 5 pairs (10 total) allows 500,000 lbs, and is also the industry standard. Storage pig trailers are also known as horizontal silos or guppies, are constructed of carbon steel and have a rounded horizontal design. These storage pig trailers can keep products like cement, lime, fly ash, sand, and other materials from outside weather elements like rain and wind, while also easily storing large dry bulk products on-site to reduce downtime during projects. Read more at: https://www.trailersoftexas.com/blog/how-much-does-a-tank-trailer-hold--25081