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Chapter 7:I-joists and headersAuthor(s): Brian K. Brashaw; Robert J. Ross
Source: Undervalued hardwoods for engineered materials and components. Madison, WI : Forest Products Society; Marquette, MI : Northern Initiative, [c2005]: pages 79-85.
Publication Series: Book Chapter
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DescriptionPrefabricated wood I-joists and headers are widely used in wood construction throughout the world. They are used in roof and floor systems in both residential and commercial applications. These structural members consist of flanges, which are made from either solid-sawn or laminated veneer lumber, that are adhesively bonded to a web that is made of plywood or oriented strandboard (OSB). Approximately 1 billion linear feet of wood I-joists and headers are manufactured annually. Currently, softwood species are predominately used for flanges. The work presented in this chapter was conducted to demonstrate the use of undervalued hardwood lumber for flanges in structural I-joists and headers.
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CitationBrashaw, Brian K.; Ross, Robert J. 2005. Chapter 7:I-joists and headers. Undervalued hardwoods for engineered materials and components. Madison, WI : Forest Products Society; Marquette, MI : Northern Initiative, [c2005]: pages 79-85.
KeywordsWooden beams, flanges, lumber, testing, hardwoods, mechanical properties, headers, I-beams, joists, I-joists, sugar maple, red maple, yellow birch, aspen
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