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What is a subframe?

April 26, 2017subframe

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What is a subframe?

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A subframe (click here for plan) is a little pier-and-beam foundation. The piers are concreted into the ground, and the beams are attached to the piers, giving uniform support. A 2′ x 2′ concrete pad is poured in the center to help take the weight of the spa.