American Institute of Timber Construction The American Institute of Timber Construction (AITC) is the national technical trade association of the structural glued laminated (glulam) timber industry. AITC represents a majority of the glued laminated timber manufacturers in the U.S. in addition to a number of installers, suppliers, sales representatives, engineers, architects, designers, and researchers. Since 1952, the American Institute of Timber Construction has had one name and one focus - structural glued laminated timber. Utilizing the professional talents and extensive experience of its membership base, AITC developed, sponsored and continues to maintain the American National Standard for Structural Glued Laminated Timber - ANSI/AITC A190.1.

American Plywood Association APA – The Engineered Wood Association is a nonprofit trade association that works with its members to create structural wood products of exceptional strength, versatility and reliability. Combining the research efforts of scientists and engineers at APA’s 42,000 square-foot research center with the knowledge gained from decades of field work, and cooperation with our member manufacturers, APA promotes new solutions and improved processes that benefit the entire industry.

American Wood Protection Association The American Wood Protection Association (AWPA) is a non-profit organization which promulgates voluntary wood preservation standards. AWPA Standards are developed by its technical committees in an ANSI accredited consensus-based process that involves individuals from all facets of wood preservation: Producers of preservatives and preservative components; producers of treated and untreated wood products; end users of treated wood; engineers, architects and building code officials; government entities, academia, and other groups with a general interest in wood preservation. AWPA's Standards are universally specified for wood preservation in the USA, and are recognized worldwide.

Canadian Softwood Inspection The Canadian Softwood Inspection Agency, Inc. (dba Macdonald Inspection Services) is an independently owned third party inspection agency. CSI is accredited by the Canadian Lumber Standards Accreditation Board (CLSAB) and the American Lumber Standards Committee Inc. (ALSC) and is a member of the National Lumber Grades Authority (NLGA). CSI actively participates in CLSAB and NLGA committees and task groups providing a direct link between our clients and the decisions that affect them and their customers.

Southern Pine Inspection Bureau The Southern Pine Inspection Bureau plays an integral part in supporting the softwood lumber industry. By maintaining exact product quality standards, SPIB inspires confidence among manufacturers, buyers, and consumers, which benefits the industry as a whole. However, SPIB is more than an inspection agency and offers a wide program of standardization of grading and manufacturing practices. SPIB is committed to working with our customers to establish the highest standards and ensure a sustainable, successful future for the industry.

Timber Products Inspection Timber Products Inspection Inc. (TP) is an independent, third party wood products inspection, testing and consulting company. TP's corporate office is located in Conyers, GA, and we also have an additional facility in Vancouver, Washington.

West Coast Lumber Inspection Bureau The West Coast Lumber Inspection Bureau is an non-profit service corporation which exists for the benefit and protection of buyers, sellers, and consumers of softwood lumber. A primary objective of the WCLIB is the development and maintenance of uniform lumber standards.

Western Wood Products Association Supported by Western lumber manufacturers, WWPA delivers lumber grading, quality control, technical, business information and product support services to sawmills as well as those who use Western softwood lumber products throughout the world.

CRSI: Concrete Reinforcing Steel Institute Founded in 1924, the Concrete Reinforcing Steel Institute (CRSI) is a technical institute and Standards Developing Organization (SDO) that stands as the authoritative resource for information related to steel reinforced concrete construction. CRSI offers many industry-trusted technical publications, standards documents, design aids, reference materials and educational opportunities.