A common type of engineered wood joists is the ____, consisting of a top and bottom rib of solid wood and a thinner plywood web between the ribs.

Question

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I-joists are a type of engineered wood joist that feature a top and bottom rib (flange) made of solid wood with a thinner web of plywood or oriented strand board (OSB) in between, resembling the shape of the letter "I". This design offers strength and efficiency for floor and roof structures.

A Common Type of Engineered Wood Joists Is the ____