Engineered Lumber Product Information
Building systems, product selector, and technical design info, from Trus Joist.

Engineered Lumber Technical Data
Span tables, specifications, and details for I-joists & LVL, from Georgia-Pacific. PDF format.

Engineered Wood Products
I-joists & LVL, from Boise Building Solutions.

Engineered Wood Products
From Roseburg Forest Products.

Engineered Wood Products
I-joists, LVL, Glulam, rimboard, from Willamette Industries.

Canadian Wood Council
Description, uses, sizes

Glulam [glue-laminated timber]
I-joists
LVL [laminated veneer lumber]
PSL [parallel strand lumber]

Sizing Engineered Beams & Headers
By Paul Fisette, UMass Building Materials & Wood Technology.