Revising Grading Criteria for Recycled Timber (2000)

Summary:

A team of industry experts worked together to develop and proposed revisions to grading criteria for recycled Douglas fir timber, to help ensure satisfactory structural performance of the timber and promote wider use of recycled timber. Experimental tests and a theoretical model helped determine effects of existing bolt/nail holes on recycled timber strength. The proposed criteria were presented to the Washington Certified Lumber Inspection Board and the American Lumber Standards Committee.