APA - The Engineered Wood Association

Publications Featuring Building Basics

In this section, you'll find information on how to incorporate engineered wood products into the construction of floors, walls, etc.

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Joint Research Report: Evaluation of Force Transfer Around Openings

Full Title: Joint Research Report: Evaluation of Force Transfer Around Openings - An Experimental and Analytical Study; USDA Joint Venture Agreement 09-11111133-117. This report contains research results on one of the major design methods concerning wood structural panel (WSP) sheathed shear walls with openings -- force transfer around openings (FTOA). The study was undertaken by a joint effort between APA, the USDA Forest Products Laboratory (FPL), and the University of British Columbia. Issued July 2011. (Form M410 - 149 pages)

7/26/2011 Free Joint Research Report: Evaluation of Force Transfer Around Openings (PDF Download)
28.5 MB

APA System Report: Use of Wood Structural Panels for Energy-Heel Trusses

This APA System Report outlines an efficient, cost-effective construction solution for meeting the lateral and wind uplift load requirements of the IRC using wood structural panels with raised-heel, or energy-heel, trusses. Updated April 2014. (Form SR-103 - 12 pages)

4/29/2014 $1.00 APA System Report: Use of Wood Structural Panels for Energy-Heel Trusses (Purchase Paper Copy) Free APA System Report: Use of Wood Structural Panels for Energy-Heel Trusses (PDF Download)
366 K

Consejos Para Los Constructores: Evite el Pandeo con un Espaciado Adecuado

Recomendación para espaciamiento de los paneles. Spanish version of Builder Tips: Prevent Buckling with Proper Spacing, Form M300. Replaces Form EX S380 LA. View on mobile devices at www.apawood.org/buildertips. Updated July 2014. (Form M300 LA - 2 pages)

7/23/2014 $0.50 Consejos Para Los Constructores: Evite el Pandeo con un Espaciado Adecuado (Purchase Paper Copy) Free Consejos Para Los Constructores: Evite el Pandeo con un Espaciado Adecuado (PDF Download)
1.4 MB

IECC Compliance Options for Wood-Frame Wall Assemblies

Describes how energy performance is measured in exterior wood wall assemblies and how to improve wall thermal performance to meet energy code requirements. Published jointly by the International Code Council (ICC) and APA. Issued January 2014. (Form P320 - 20 pages)

1/14/2014 $2.00 IECC Compliance Options for Wood-Frame Wall Assemblies (Purchase Paper Copy) Free IECC Compliance Options for Wood-Frame Wall Assemblies (PDF Download)
5.9 MB

APA System Report: Fire Protection of Floors Constructed with Prefabricated Wood I-Joists...

This APA System Report, Fire Protection of Floors Constructed with Prefabricated Wood I-Joists for Compliance with the IRC, provides prescriptive I-joist floor assemblies that comply with 2012 IRC Section R501.3. Revised September 2014. (Form SR-405 - 9 pages)

9/18/2014 Free APA System Report: Fire Protection of Floors Constructed with Prefabricated Wood I-Joists... (PDF Download)
1.3 MB

APA Engineered Wood Construction Guide

Comprehensive guide to engineered wood construction systems for both residential and commercial/industrial buildings. Includes information on plywood and oriented strand board (wood structural panels), glulam, I-joists, structural composite lumber, typical specifications, and design recommendations for floor, wall, and roof systems, diaphragms, shear walls, fire-rated systems, and methods of finishing. Individual sections of the guide are also available for download. Revised September 2011. (Form E30 - 84 pages)

9/22/2011 $12.00 APA Engineered Wood Construction Guide (Purchase Paper Copy) Free APA Engineered Wood Construction Guide (PDF Download)
13.8 MB

APA Engineered Wood Construction Guide Excerpt: Guide to Engineered Wood Products: Panels

Excerpt from the Engineered Wood Construction Guide, Form E30. Includes product descriptions and specification recommendations for structural panels. Only available as a downloadable pdf file. Revised September 2011. ( - 20 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: Guide to Engineered Wood Products: Panels (PDF Download)
4.7 MB

APA Engineered Wood Construction Guide: Glulam

Excerpt from the Engineered Wood Construction Guide, Form E30. Includes product descriptions and specification recommendations for glulam. Only available as a downloadable pdf file. Revised September 2011. ( - 11 pages)

9/22/2011 Free APA Engineered Wood Construction Guide: Glulam (PDF Download)
2.1 MB

APA Engineered Wood Construction Guide Excerpt: I-Joist

Excerpt from the Engineered Wood Construction Guide, Form E30. Includes product descriptions and specification recommendations for I-joist. Only available as a downloadable pdf file. Revised September 2011. ( - 8 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: I-Joist (PDF Download)
1.9 MB

APA Engineered Wood Construction Guide Excerpt: Structural Composite Lumber

Excerpt from the Engineered Wood Construction Guide, Form E30. Includes product descriptions and specification recommendations for structural composite lumber. Only available as a downloadable pdf file. Revised September 2011. ( - 7 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: Structural Composite Lumber (PDF Download)
1.9 MB

APA Engineered Wood Construction Guide Excerpt: Wall Construction

Excerpt from the Engineered Wood Construction Guide, Form E30. Includes application recommendations for APA structural panel wall sheathing, single-wall siding, and panel and lap siding installation over sheathing. Siding joint details, siding patterns and grades, exterior finish recommendations, and panel shear wall construction are also covered. Only available as a downloadable pdf file. Revised September 2011. ( - 20 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: Wall Construction (PDF Download)
6.0 MB

APA Engineered Wood Construction Guide Excerpt: Floor Construction

Excerpt from the Engineered Wood Construction Guide, Form E30. Provides information on a variety of floor framing and wood structrual panel products that can be used in floor construction. Only available as a downloadable pdf file. Revised September 2011. ( - 19 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: Floor Construction (PDF Download)
3.5 MB

APA Engineered Wood Construction Guide Excerpt: Roof Construction

Excerpt from the Engineered Wood Construction Guide, Form E30. Includes application of structural panel sheathing for roofs, preframed roof panels, long span systems, soffits, and roof diaphragms. Only available as a downloadable pdf file. Revised September 2011. ( - 14 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: Roof Construction (PDF Download)
2.9 MB

APA Engineered Wood Construction Guide Excerpt: Building Requirements and Related Panel Systems

Excerpt from the Engineered Wood Construction Guide, Form E30. A summary of special systems, including the Permanent Wood Foundation, outdoor decks, concrete forming, Structural Insulated Panels, panels over metal framing, and special floor surfacing. Only available as a downloadable pdf file. Revised September 2011. ( - 18 pages)

9/22/2011 Free APA Engineered Wood Construction Guide Excerpt: Building Requirements and Related Panel Systems (PDF Download)
3.6 MB

Introduction to Wall Bracing

Provides a basic bracing how-to guide that explains why bracing is important and shows how to meet basic requirements for wall bracing in accordance with the 2006 International Residential Code (IRC). Updated December 2009. (Form F430 - 16 pages)

12/20/2009 $2.00 Introduction to Wall Bracing (Purchase Paper Copy) Free Introduction to Wall Bracing (PDF Download)
2.5 MB

Product Guide: Performance Rated Siding

Covers face grades, textures and patterns, finishing and refinishing, how to order and specify, basic application recommendations. Available only as a downloadable PDF. Updated June 2009. (Form E300 - 16 pages)

6/11/2009 Free Product Guide: Performance Rated Siding (PDF Download)
2.6 MB

Research Report: Plywood Diaphragms

Research Report 138. Describes tests of stapled, high-load and glued diaphragms, and those with openings. Summarizes previous APA diaphragm testing. Revised July 2000 (Form E315 - 60 pages)

7/31/2000 $5.00 Research Report: Plywood Diaphragms (Purchase Paper Copy) Free Research Report: Plywood Diaphragms (PDF Download)
486 K

Product Guide: Performance Rated Panels

Describes performance standards for structural wood panels and the compositions of different types of APA panels with the Performance Rated designations of APA RATED SHEATHING, APA RATED STURD-I-FLOOR and APA RATED SIDING. It also describes the typical applications where Performance Rated panels are used and provides updated trademark and performance category information. Availalbe only as a downloadable PDF. Revised December 2011 (Form F405 - 14 pages)

12/31/2011 Free Product Guide: Performance Rated Panels (PDF Download)
2.8 MB

Build Profit with Wood Walls

Introductory piece to APA's series of wall bracing materials highlighting building design, construction and efficiency advantages of fully sheathing with wood structural panels. This brochure provides tips and resources on how to meet all of these demands and build profitability into your residential construction project. Issued December 2008. (Form J435 - 6 pages)

12/18/2008 $1.00 Build Profit with Wood Walls (Purchase Paper Copy) Free Build Profit with Wood Walls (PDF Download)
2.4 MB

Build Energy Efficient Walls

Provides five basic steps to construct energy-saving wood wall systems that meet code, are durable to the forces of nature, and save homeowners money. Issued December 2008. (Form J440 - 16 pages)

12/30/2008 $2.00 Build Energy Efficient Walls (Purchase Paper Copy) Free Build Energy Efficient Walls (PDF Download)
1.6 MB

Guide to 2009 IRC Wood Wall Bracing Provisions

Explains how to use the IRC to provide the bracing necessary for a residential structure to resist the lateral loads that can result from wind and seismic events. The illustrated guide, the result of a publishing agreement between the International Code Council and APA, is 255 pages in length and features more than 200 figures, tables and photos.

The guide is available for purchase for $41.00 ($33.00 for ICC members) from the ICC store. Visit www.iccsafe.org for more information. (ICC Product 7102S09 - 255 pages)

11/5/2009

APA System Report: APA Simplified Wall Bracing Method

The Simplified Wall Bracing Method described in this report provides building officials, builders and designers with an approach and the supporting technical information to meet the requirements of the 2012 IRC Simplified Wall Bracing (Section R601.12). In the development of this report, the 2012 IRC Simplified Wall Bracing has been modified to increase its applicability to a greater percentage of home designs. To achieve broad applicability and acceptance, the system uses the most common type of wall sheathing, wood structural panels, based on their superior structural performance.

This latest version expands the minimum required bracing by increasing the basic wind speed to 100 mph or less and the Wind Exposure Category to be B or C. It also adds partial credits to 8-foot walls from the existing 9-foot only walls. Revised February 2013. (Form SR-102 - 12 pages)

3/11/2013 $1.00 APA System Report: APA Simplified Wall Bracing Method (Purchase Paper Copy) Free APA System Report: APA Simplified Wall Bracing Method (PDF Download)
698 K

APA System Report: Design for Combined Shear and Uplift from Wind

Designs for utilizing wind uplift resistance capabilities from wood structural panels, in addition to resisting lateral shear forces and wind pressure perpendicular to the wall. Updated February 2011, SR-101B. (Form SR-101 - 12 pages)

2/19/2011 $1.00 APA System Report: Design for Combined Shear and Uplift from Wind (Purchase Paper Copy) Free APA System Report: Design for Combined Shear and Uplift from Wind (PDF Download)
491 K

Builder Tips: How To Minimize Buckling of Asphalt Shingles

Describes procedures to minimize buckling. Revised March 2012. (Form K310 - 2 pages)

3/12/2012 $0.50 Builder Tips: How To Minimize Buckling of Asphalt Shingles (Purchase Paper Copy) Free Builder Tips: How To Minimize Buckling of Asphalt Shingles (PDF Download)
396 K

Builder Tips: Prevent Buckling with Proper Spacing

Includes spacing recommendations for APA Rated Sheathing, APA Rated Sturd-I-Floor®, and APA 303 Siding. View on mobile devices at www.apawood.org/buildertips. Updated May 2013. (Form M300 - 2 pages)

5/13/2013 $0.50 Builder Tips: Prevent Buckling with Proper Spacing (Purchase Paper Copy) Free Builder Tips: Prevent Buckling with Proper Spacing (PDF Download)
713 K

Builder Tips: APA Panels for Soffit Applications

Recommended panels and spans for open and closed soffits. Updated May 2013. Now view on mobile devices. Go to: www.apawood.org/buildertips. (Form N330 - 2 pages)

5/13/2013 $0.50 Builder Tips: APA Panels for Soffit Applications (Purchase Paper Copy) Free Builder Tips: APA Panels for Soffit Applications (PDF Download)
679 K

Builder Tips: Proper Installation of APA Rated Sheathing for Roof Applications

Step-by-step instructions for roof sheathing installation. Updated July 2013. Now view on mobile devices. Go to: www.apawood.org/buildertips. (Form N335 - 2 pages)

7/10/2013 $0.50 Builder Tips: Proper Installation of APA Rated Sheathing for Roof Applications (Purchase Paper Copy) Free Builder Tips: Proper Installation of APA Rated Sheathing for Roof Applications (PDF Download)
1.8 MB

Builder Tips: Finishing APA Rated Siding

Describes recommended finishes and application recommendations for APA Rated Siding. Revised May 2013. Now view on mobile devices. Go to: www.apawood.org/buildertips. (Form Q350 - 2 pages)

5/13/2013 $0.50 Builder Tips: Finishing APA Rated Siding (Purchase Paper Copy) Free Builder Tips: Finishing APA Rated Siding (PDF Download)
1.4 MB

Builder Tips: Proper Selection and Installation of APA Plywood Underlayment

Includes information on selection, handling, installation, and fastening. Updated July 2013. Now view on mobile devices. Go to: www.apawood.org/buildertips. (Form R340 - 2 pages)

7/10/2013 $0.50 Builder Tips: Proper Selection and Installation of APA Plywood Underlayment (Purchase Paper Copy) Free Builder Tips: Proper Selection and Installation of APA Plywood Underlayment (PDF Download)
256 K

Builder Tips: Minimize Nail Pops

Describes how to reduce nail pops through recommended fastener selection and installation. View on mobile devices at www.apawood.org/buildertips. Updated June 2013. (Form S300 - 2 pages)

7/13/2013 $0.50 Builder Tips: Minimize Nail Pops (Purchase Paper Copy) Free Builder Tips: Minimize Nail Pops (PDF Download)
518 K

Canadian Edition, Builder Tips: Storage and Handling of APA Trademarked Panels

Edition specific to Canadian construction job sites. Describes recommended handling for shipping, storage, and on the job site. Available only as a downloadable PDF. Issued March 2009. (Form U450 CN - 2 pages)

3/10/2009 $0.50 Canadian Edition, Builder Tips: Storage and Handling of APA Trademarked Panels (Purchase Paper Copy) Free Canadian Edition, Builder Tips: Storage and Handling of APA Trademarked Panels (PDF Download)
254 K

Raised Wood Floors: Case Studies in Progressive Home Construction

Raised wood floor construction is a proven building method for most any location and soil condition. By combining traditional architecture with progressive building techniques, builders are constructing raised wood floor homes that are durable, attractive and fast-selling. This publication showcases builders and their best practices for designing and constructing raised wood floor systems. Updated January 2011. (Form K110 - 16 pages)

1/13/2011 $2.00 Raised Wood Floors: Case Studies in Progressive Home Construction (Purchase Paper Copy) Free Raised Wood Floors: Case Studies in Progressive Home Construction (PDF Download)
25.3 MB

Voluntary Product Standard, PS 1-09 Structural Plywood Pocket Guide

Condensed, pocket-sized (3-3/4" x 6 1/2") edition contains excerpts from Voluntary Product Standard PS 1-09, providing expanded and updated requirements for producing, marketing, and specifying plywood for construction and industrial uses. (Form L875 - 88 pages)

6/30/2010 $4.00 Voluntary Product Standard, PS 1-09 Structural Plywood Pocket Guide (Purchase Paper Copy)

Technical Note: Fire-Retardant-Treated (FRT) Plywood

Provides the required treating standards and locations within the building codes where the standards are referenced, as well as where fire-retardant-treated FRT plywood can be safely used. Only available as a downloadable pdf file. Issued January 2009. (Form K320 - 7 pages)

1/22/2009 Free Technical Note: Fire-Retardant-Treated (FRT) Plywood (PDF Download)
241 K

Technical Note: Water Vapor Permeance of Wood Structural Panels and Wood Wall Construction

Because moisture vapor can move through exterior wall systems, care must be taken with respect to the design of the wall to prevent excessive condensation and minimize moisture-related problems. This document addresses the water vapor permeance of structural wood panels, vapor retarders and their role in wall-system design. Issued February 2009. Available only as a downloadable PDF. (Form J450 - 6 pages)

2/11/2009 Free Technical Note: Water Vapor Permeance of Wood Structural Panels and Wood Wall Construction (PDF Download)
248 K

Technical Note: Controlling Decay in Wood Construction

Defines decay fungi and conditions that support decay. Provides an overview on preventing and minimizing the degradation of wood through proper design, storage, construction, and maintenance details. Revised December 2009. Available only as a downloadable PDF. (Form R495 - 6 pages)

12/9/2009 Free Technical Note: Controlling Decay in Wood Construction (PDF Download)
651 K

Technical Note: Understanding the Importance of Structural Wall Sheathing as a Wall Covering

Provides information on wind loads and minimum wall design wind pressures. Updated November 2008. Available only as a downloadable PDF. (Form J430 - 6 pages)

11/13/2008 Free Technical Note: Understanding the Importance of Structural Wall Sheathing as a Wall Covering (PDF Download)
335 K

Technical Note: Using Wood Structural Panels for Combined Uplift and Shear Resistance

Explains the use of wood structural panels for combined shear and uplift, which can eliminate many of the hurricane ties that are required between the floors of the structure that is already sheathed with wood structural panels due to lateral wind forces. Available only as a downloadable PDF. Updated February 2008. (Form E510 - 6 pages)

2/21/2008 Free Technical Note: Using Wood Structural Panels for Combined Uplift and Shear Resistance (PDF Download)
301 K

Data File: Selection, Installation and Preparation of Plywood Underlayment

This APA Data File provides recommendations for the installation and preparation of underlayment under finish flooring in residential and light commercial applications. Recommendations are also provided for the selection of APA plywood Underlayment, a plywood panel grade in accordance with Voluntary Product Standard PS 1, Structural Plywood. This publication is only available as a downloadable PDF. Revised June 2012. (Form L335 - 8 pages)

6/21/2012 Free Data File: Selection, Installation and Preparation of Plywood Underlayment (PDF Download)
417 K

Video: Quality Roof Construction (VHS)

Shows how to avoid roof complaints with proper framing, sheathing, and roofing techniques. 15 minutes. VHS format. (Form VT-0005)

$10.00 Video: Quality Roof Construction (VHS) (Purchase Paper Copy)

Video: Quality Floor Construction (VHS)

Shows how to reduce floor squeaks, buckling, and nail-pop with simple construction techniques. 15 minutes. VHS format. (Form VT-0003)

$10.00 Video: Quality Floor Construction (VHS) (Purchase Paper Copy)

Tornados of the South

Structural Performance of Newly Constructed Homes in North Carolina, Alabama, and Georgia. Report provides damage observations conducted by APA after the April 2011 tornados. Available only as a downloadable PDF. Issued August 2011. (Form SP-1154 - 27 pages)

8/16/2011 Free Tornados of the South (PDF Download)
1.2 MB

APA Publication Catalog

This index of publications produced by APA provides a complete list of APA Design & Construction Guides, Product & Grade Guides, Builder Tips, Case Studies, Technical Notes, Research Reports, and Industrial publications. Revised January 2014. (Form B300 - 24 pages)

1/13/2014 $0.00 APA Publication Catalog (Purchase Paper Copy) Free APA Publication Catalog (PDF Download)
3.8 MB

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