Laminated Veneer Lumber Dimension Adjustment Factors for Compliance with NIST Handbook 130
Technical Topic
Laminated Veneer Lumber (LVL), like other wood products, experiences dimensional changes due to moisture content variations.
This publication is designed for: engineered wood manufacturers, compliance officials
This publication addresses the need for standardized adjustment factors that account for moisture-related dimensional changes in LVL products to comply with NIST Handbook 130 requirements. It presents the results of APA's 2022 laboratory study examining dimensional changes in LVL products from multiple North American manufacturers. The study included 162 specimens tested under various moisture conditions to establish reliable adjustment factors for thickness, width, and length measurements.
Key sections include:
Introduction to NIST compliance requirements
APA study on LVL dimensional changes
Recommended moisture adjustment factors for LVL
Example for weights and measures calculations
Published by APA — The Engineered Wood Association.
