Voluntary Product Standard PS 1-22, Structural Plywood

This NIST voluntary product standard establishes a requirement for the principal types and grades of structural plywood. It covers the wood species, veneer grading, adhesive bonds, panel construction and workmanship, dimensions and tolerances, and moisture content of structural plywood intended for construction and industrial uses.

Structural plywood includes both Exposure 1 and Exterior plywood. Each classification is a function of veneer grade and adhesive performance.

This publication is designed for: engineered wood manufacturers, engineers, architects

Key sections include:

• Scope

• Terminology

• Reference publications

• Plywood classification

• Requirements

• Specimen preparation and testing

• Marking and certification

• Quality assurance requirements

• Table of species grouping

• Reinspection practices

• Recommended thickness labels

• Labeling guidelines based on uniform packaging and labeling regulations of NIST Handbook 30 and Handbook 133

• Formaldehyde

• Example trademarks

Published by APA — The Engineered Wood Association.