Technical Document Library

Design & Construction Guides

Engineered Wood Construction Guide Technical Guides - E30 This publication provides a comprehensive overview of engineered wood construction systems for residential, commercial and industrial buildings Panel Design Specification Technical Guides - D510 This publication describes recommended design capacities (ASD) and design methods for wood structural panels manufactured under PS 1 and PS 2 and APA Performance Standard PRP-108. Building for High-Wind Resilience in Light-Frame Wood Construction Technical Guides - M310 This publication illustrates nine construction details that improve wind resilience in residential construction, with real-world examples of each design Advanced Framing Construction Guide - M400 This publication explains the components of advanced framing in floor and wall framing, including illustrated construction details Diaphragms and Shear Walls Design and Construction Guide Technical Guides - L350 This publication provides design and construction recommendations for engineered diaphragm systems in floor, shear wall and roof systems Glued Laminated Beam Design Tables Technical Guides - S475 This publication provides recommended design load tables for glulam beam roof and floor applications Fire-Rated Systems Design and Construction Guide Technical Guides - W305 This publication is a guide to cost-effective fire-rated wood and wood structural panel systems that meet code requirements

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Product Guidance

Performance Rated Panels Product Guide - F405 This product guide describes performance standards, applications, trademark and performance category information for APA Performance Rated Panels Oriented Strand Board Product Guide - W410 This product guide provides an overview of oriented strand board (OSB) and discusses OSB composition, properties, code acceptances and applications Glulam Product Guide Product Guide - X440 This product guide provides an overview of APA trademarked glulam and discusses design considerations, applications and specification

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• Plywood
• OSB
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• Glulam
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Select a Manufacturer

• AcuTruss Industries 1996 (LTD)
• Alamco Wood Products, LLC
• Arizona Structural Laminators, LLC
• Boise Cascade Wood Products, LLC
• Canfor
• D.R. Johnson Wood Innovations
• Element5 Limited Partnership
• FraserWood Industries Ltd.
• Freres Lumber Co., Inc.
• Georgia-Pacific Wood Products LLC
• Global LVL Inc.
• Hardel Mutual Plywood Corporation
• IB EWP Inc.
• Interfor
• Kalesnikoff Mass Timber, Inc.
• LP
• Mercer Conway
• Mississippi Laminators, Incorporated
• Murphy Company
• Nordic Structures
• OK Laminators, Inc.
• PWT
• QB Corporation
• Rayonier
• Resolute Engineered Wood
• Rosboro
• Roseburg Forest Products Company
• RoyOMartin
• Shelton Structures Inc.
• SmartLam NA Columbia Falls, LLC
• SmartLam NA Dothan, LLC.
• Stark Truss Company, Inc.
• Tolko Industries Ltd.
• Vaagen Timbers, LLC
• WA Enterprises LTD.
• Warmboard, Inc.
• West Fraser LVL
• West Fraser Timber Co. Ltd.
• Western Forest Products
• Zip-O-Laminators, LLC

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Standards

Voluntary Product Standard PS 1-22, Structural Plywood Standards - L870 This publication is the national standard for performance requirements and marking plywood for construction and industrial uses. Voluntary Product Standard PS 2-18, Performance Standard for Wood Structural Panels Standards - S350 Performance requirements, adhesive bond performance, panel construction and workmanship, dimensions and tolerances, marking and moisture content of wood structural panels. ANSI/APA PRG 320-2025 Standard for Performance-Rated Cross-Laminated Timber Standards - ANSI/APA PRG 320-2025 This ANSI/APA standard provides requirements and test methods for qualification and quality assurance for performance-rated cross-laminated timber (CLT). ANSI A190.1-2022 Product Standard for Structural Glued Laminated Timber Standards - ANSI A190.1-2022 This ANSI Standard contains requirements for the manufacture and quality control of structural glued laminated timber.

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Technical Guidance

Design for Force Transfer Around Openings (FTAO) Technical Note - T555 This technical note presents a rational analysis for applying FTAO to walls with asymmetric piers and walls with multiple openings, based on APA modeling and testing Load-Span Tables for APA Wood Structural Panels Technical Note - Q225 This publication contains uniform load tables for APA trademarked wood structural panels that are manufactured and qualified in accordance with PS 1, PS 2 and APA PRP-108 A Portal Frame With Hold Downs for Engineered Applications Technical Topic - TT-100 This publication describes the use of portal-frame design in engineered applications and as bracing in conventional light-frame construction APA System Report 102: APA Simplified Wall Bracing Method System Report - SR-102 This report provides an approach to meet the requirements of the 2024, 2021, 2018, 2015 and 2012 IRC simplified wall bracing (Section R602.12).

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Frequently Asked Questions

FAQs: Questions About Structural Plywood and OSB Performance FAQ - F505 This publication answers questions about structural plywood and OSB panel performance, grade, growth and natural characteristics. FAQs: Questions About Wood Structural Panel Exposure to Excessive Moisture FAQ - X501 This publication provides guidance about the serviceability of wood structural panels (plywood and OSB) after exposure to high levels of moisture. Builder Tips: 4 Ways to Minimize Nail Pops Builder Tip - S300 This publication describes how to reduce nail pops through recommended fastener selection and installation