The American Institute of Timber Construction (AITC)
Representing the glued laminated timber industry since 1952, AITC provides technical support to manufacturers and design community, and third party quality control to manufacturing plants.

Forest Products Laboratory (FPL)
We use science and technology to conserve and extend our nation's forest resources. Our mission is to promote healthy forests and forest-based economies through the efficient, sustainable use of our wood resources. Many breakthrough technologies that influence the way we live started at FPL.

International Code Council (ICC)
The International Code Council, a membership association dedicated to building safety and fire prevention, develops the codes used to construct residential and commercial buildings, including homes and schools. Most U.S. cities, counties and states that adopt codes choose the International Codes developed by the International Code Council.

National Association of Home Builders (NAHB)
NAHB is a Washington, DC-based trade association representing more than 235,000 residential home building and remodeling industry members. Known as "the voice of the housing industry," NAHB is affiliated with more than 800 state and local home builders associations around the country.

Northeastern Lumber Manufacturers Association (NELMA)
Established in 1933, NELMA is the rules writing agency for Eastern White Pine lumber and the grading authority for Eastern Spruce, Balsam Fir, Spruce Pine Fir (SPF) species grouping, and other commercially important eastern softwood lumber species.

Timber Frame Business Council
The Timber Frame Business Council is a nonprofit organization providing information and resources to support and strengthen the timber frame industry.

Timber Framers Guild
A non-profit educational membership association dedicated to the craft of timber framing. We serve as a center of timber frame information and design for the professional and the general public.