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American Wood Council

What is Structural Composite Lumber and what are the building code and standards requirements for them?

Chapter 8 of the 2015 NDS says: The term "structural composite lumber" refers to either laminated veneer lumber, parallel strand lumber, laminated strand lumber, or oriented strand lumber. These materials are structural members bonded with an exterior adhesive.

Design procedures and other information provided in the NDS apply only to structural composite lumber conforming to all pertinent provisions of ASTM D 5456.

The IBC gives code requirements for wood I-joists in Section 2303.1.10, and the IRC gives code requirements in Section R502.1.5.

For further information relating to code and standards requirements, see here: Download PDF

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