Download (PDF 999 KB): https://research.fs.usda.gov/download/treesearch/7147.pdf
Abstract
Glued structural members are manufactured in a variety of configurations. Structural composite lumber (SCL) products consist of small pieces of wood glued together into sizes common for solid-sawn lumber. Glued-laminated timber (glulam) is an engineered stress-rated product that consists of two or more layers of lumber in which the grain of all layers is oriented parallel to the length of the lumber. Glued structural members also include lumber that is glued to panel products, such as box beams and I- eams, and structural sandwich construction.
Citation
Moody, Russell C.; Liu, Jen Y. 1999. Glued structural members. Wood handbook : wood as an engineering material. Madison, WI : USDA Forest Service, Forest Products Laboratory, 1999. General technical report FPL ; GTR-113: Pages 11.1-11.24