Definitions for "I-joist"
Keywords:  flange, osb, joist, lumber, rafters
An 'I'shaped engineered wood structural member designed for use in residential floor construction. The product is prefabricated using sawn or structural composite lumber flanges and wood structural panel webs, bonded together with exterior adhesives.
a manufactured wood product consisting of web
Structural building components that resemble the letter "I". Can be used as floor joists and ceiling rafters. I-joists are manufactured with two key parts: flange and web. The flange is usually made with laminated veneer lumber or dimensional lumber and the web or center of the I-joist is commonly made of plywood or oriented strand board (OSB). Large holes can be cut in the web to accommodate duct work, plumbing and electrical lines.