Technical Document Library
Research-Backed Guidance for Every Project
Research-Backed Guidance for Every Project
Product Guide - E300
Describes the following for performance rated siding: face grades, textures and patterns; finishing; ordering/specifying; basic application recommendations
Research Report - E315
This publication describes tests of high-load diaphragms with multiple rows of fasteners, glued diaphragms, and diaphragms with openings
Research Report - Q260
This report includes test results of unblocked, stapled and metal-framed shear walls, and a summary of previous shear wall tests.
Product Guide - X440
This product guide provides an overview of APA trademarked glulam and discusses design considerations, applications and specification
Product Guide - K435
This publication describes the specification, advantages, applications and finishing recommendations of sanded plywood and includes trademark examples and explanations
Product Guide - B360
Describes high density overlay (HDO) and medium density overlay (MDO) plywood applications, properties and characteristics, and shop practice and finishing recommendations
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).
System Report - SR-101
This report discusses using wood structural panels to resist uplift from wind, including resistance to lateral shear forces and wind pressure perpendicular to the wall
System Report - SR-405
This system report provides guidance on fire protection of floors constructed with prefabricated wood I-joist assemblies that comply with 2015, 2018, 2021 and 2024 IRC updates
System Report - SR-103
This publication outlines a construction solution to meet the IRC’s lateral and wind uplift load requirements using wood structural panels with raised-heel, or energy-heel, trusses
Damage Assessment Report - SP-1182
This report summarizes the findings of a team of engineers who visited the site of a 2017 Texas windstorm to assess the damages sustained by residences
Research Report - M410
This report contains research results on force transfer around openings (FTAO). This study was a joint effort between APA, the USDA FPL and the UBC.
Damage Assessment Report - SP-1177
This publication contains damage assessments from the December 2015 tornado storm near Dallas, TX, including wind-resistant construction recommendations
Market Analysis Reports - QPRO-26
The APA Quarterly Production Report delivers comprehensive, up-to-date data on North American structural wood panel and engineered wood product markets
Market Analysis Reports - QPRO-26
The APA Quarterly Production Report delivers comprehensive, up-to-date data on North American structural wood panel and engineered wood product markets
Market Analysis Reports - MHRS-26
Monthly U.S. & Canadian housing market analysis covering starts, permits, home sales, mortgage rates, remodeling, and wood product demand indicators. Annual subscription.
Builder Tip - Q350
This publication describes recommended finishes and application recommendations for APA Rated Siding.
Data File - B840
This publication provides minimum requirements that plywood panels must meet to qualify for classification as APA 303 Series specialty siding.
Typical Details - DT-CWA-4
This detail shows R20 wall assembly with insulated siding (R2 min.), engineered wood or lumber header, wood structural panel sheathing, and R19 compressed fiberglass batts.
Technical Note - F410
This publication describes mechanism and construction features that contribute to siding buckling
Product Guide - F405
This product guide describes performance standards, applications, trademark and performance category information for APA Performance Rated Panels
Product Advisory - SP-1172
This product advisory contains results of testing to measure the shear wall performance of Thermo-Ply® sheathing
Technical Guides - S500
This publication describes the stringent product standards required for cross-laminated timber manufactured in North America, which may not be met by imported products
Typical Details - DT-BB-18
This detail shows window head and sill flashing with siding.
ESR Joint Evaluation Report - ESR-1301
OSB:
Product Advisory - SP-1185
This publication provides test results for imported plywood panels from Brazil, evaluated for conformance to U.S. Product Standard PS 1
Product Guide - W410
This product guide provides an overview of oriented strand board (OSB) and discusses OSB composition, properties, code acceptances and applications
Product Advisory - SP-1186
This publication discusses overstated published lateral load design properties of eight flexible structural sheathing products
Typical Details - DT-BB-19
This detail shows z-flashing installation at horizontal joint between APA panel siding.
Standards - L870
This publication is the national standard for performance requirements and marking plywood for construction and industrial uses.
Standards - ANSI A190.1-2022
This ANSI Standard contains requirements for the manufacture and quality control of structural glued laminated timber.
Technical Topic - TT-091
Details the layups for APA 303 grooved plywood sidings (T1-11 and reverse board & batten), representing minimal plywood siding constructions as typically found in the marketplace.
Typical Details - DT-EWG-12
This detail shows APA Rated horizontal panel siding applied directly to wall framing in an APA Sturd-I-Wall system.
Typical Details - DT-EWG-6
This detail shows APA Rated lap siding installed over wood structural panel sheathing with a weather-resistive barrier on a wood-framed exterior wall assembly.
Typical Details - DT-EWG-7
This detail shows APA Rated siding panels applied over wood structural panel sheathing with a weather-resistive barrier on a wood-framed wall assembly.
Typical Details - DT-FR-4
This detail shows a one-hour fire-rated wood-framed wall assembly with Type X gypsum sheathing and wallboard, optional insulation, and APA rated siding exterior finish.
Typical Details - DT-FR-8
This detail shows fire-rated wall assembly detail of 3/8" APA rated plywood siding over Type X gypsum wallboard with optional insulation on 2x4 studs at 16" on center.
Green Verification Report - GR-L274
I-Joists:
Standards - ANSI/APA PRP 210-2024
This ANSI/APA standard provides requirements and test methods for qualification and quality assurance for performance-rated engineered wood siding.
Standards - S350
Performance requirements, adhesive bond performance, panel construction and workmanship, dimensions and tolerances, marking and moisture content of wood structural panels.
Technical Guides - Q250
Determine the type and spacing of siding fasteners to meet building code requirements when using wood structural panel sheathing as a nail base (also called nailable sheathing)
Technical Topic - TT-021
Table of recommended uniform live loads for PS 1 APA 303 siding when used as open soffit or combined roof decking-ceiling with long dimension perpendicular to supports.
Green Verification Report - GR-L259
I-Joists:
Green Verification Report - GR-L289
Rim Board, SCL:
Technical Guides - C800
Describes common engineered wood products: plywood, oriented strand board (OSB), I-joist, glued laminated timber (glulam), structural composite lumber (SCL) and rim board.
Product Guide - H650
This publication covers SIP advantages, applications, design and construction considerations, connection details, assembly and related topics.
Technical Note - C465
This publication provides installation recommendations and test results for energy-saving APA Sturd-I-Wall construction
Typical Details - DT-FR-3
This detail shows fire-rated exterior wall assembly with APA rated siding over sheathing, insulation, 2x4 wood framing at 16" on center and Type X gypsum wallboard interior finish.
Typical Details - DT-FR-2
This detail shows a fire-rated wall assembly using wood structural panel sheathing over studs with gypsum wallboard, fire protective membrane, and glass fiber insulation.
Typical Details - DT-FR-7
Fire-rated wall assembly of two UL-rated configurations (U330 and U335) with different exterior finishes over wood framing with mineral wool or glass fiber insulation.
Typical Details - DT-BB-6
This detail shows sill flashing detail at sliding glass door of pan flashing counter-flashing deck flashing and water-resistive barrier.
Case Studies - C440
This case study discusses how engineered wood products helped overcome structural, acoustic and cost challenges at a North Carolina senior living expansion project.
APA Product Reports - PR-C302
Plywood:
Technical Note - J330
This publication addresses concerns related to formaldehyde in engineered wood products and explains their exemption from leading formaldehyde emission standards and regulations.
Technical Topic - TT-047
This publication discusses the standards under which plywood and oriented strand board (OSB) are qualified and the interchangeability of the two products, depending on the end use
ESR Joint Evaluation Report - ESR-1251
I-Joists:
APA Product Reports - PR-L259C
I-Joists:
APA Product Reports - PR-L289
Rim Board, SCL:
APA Product Reports - PR-L289C
Rim Board, SCL:
APA Product Reports - PR-L345
Glulam:
APA Product Reports - PR-L349C
SCL:
APA Product Reports - PR-L259
I-Joists:
APA Product Reports - PR-L269
Glulam, Rim Board:
APA Product Reports - PR-L313
Glulam:
APA Product Reports - PR-L335
SCL:
APA Product Reports - PR-L335C
CLT:
APA Product Reports - PR-N136
OSB:
APA Product Reports - PR-S201
SCL, I-Joists, Rim Board:
APA Product Reports - PR-S202
Rim Board:
APA Product Reports - PR-S259
I-Joists, SCL, Rim Board:
ESR Joint Evaluation Report - ESR-1040
SCL:
ESR Joint Evaluation Report - ESR-5157
CLT, SCL: