Chapter 7:I-joists and headers

Brian K. Brashaw; Robert J. Ross

Treesearch

Chapter 7:I-joists and headers

Informally Refereed

Authors:

Brian K. Brashaw, Robert J. Ross

Year:

2005

Type:

Book Chapter

Station:

Forest Products Laboratory

Source:

Undervalued hardwoods for engineered materials and components. Madison, WI : Forest Products Society; Marquette, MI : Northern Initiative, [c2005]: pages 79-85.

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Download (PDF 189 KB): https://research.fs.usda.gov/download/treesearch/31114.pdf

Abstract

Prefabricated 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.

Keywords

Wooden beams, flanges, lumber, testing, hardwoods, mechanical properties, headers, I-beams, joists, I-joists, sugar maple, red maple, yellow birch, aspen

Citation

Brashaw, 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.