Technical Document Library
Research-Backed Guidance for Every Project
Research-Backed Guidance for Every Project
Typical Details - DT-FR-1
This detail shows floor assembly of APA wood structural panel subfloor over plywood underlayment, building paper, and joists with gypsum wallboard ceiling below.
Technical Guides -
Market Analysis Reports - MKO-E191
Annual analysis of U.S., Canadian, and global economic factors impacting engineered wood demand, with multi-segment forecasts and historical production data. Available as PDF.
Case Studies - S115
This case study explains how glulam beams and engineered wood products shaped 2125 Franklin, a 735-bedroom mixed-use student housing building near the University of Oregon.
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.
Technical Guides -
A Guide to the 2015 IRC Wood Wall Bracing Provisions
Technical Guides -
A Guide to the 2018 IRC Wood Wall Bracing Provisions + Free Digital 2021 Supplement
Technical Topic - TT-100
This publication describes the use of portal-frame design in engineered applications and as bracing in conventional light-frame construction
Technical Note - T230
This publication describes single- and double-layer all-wood floor assemblies for acoustic performance and includes both construction details and acoustic ratings
Construction Guide - M400
This publication explains the components of advanced framing in floor and wall framing, including illustrated construction details
Case Studies - T110
This case study explains how a Pennsylvania home builder gained a competitive advantage by adopting advanced framing techniques that deliver lasting energy savings to customers.
Technical Topic - TT-107
This publication answers questions regarding the performance of wood structural panels as air barriers
Case Studies - N110
This case study discusses how two mid-rise projects used all-wood podiums instead of concrete to cut construction costs, reduce building mass and improve sustainability.
Typical Details - DT-AF-1
This detail shows an alternative insulated 3-stud corner framing assembly with drywall clips to support the gypsum from one stud.
Technical Guides - X400
This publication explains the APA panel trademark and quality standards for wood structural panels
Typical Details - DT-EWG-1
This detail shows an APA glued floor system using APA Rated Sturd-I-Floor or sheathing panels.
Technical Guides - B707
Learn the APA research facility capabilities, including assembly-level testing of roof and floor building components and performance evaluation of lateral force resisting systems
Typical Details - DT-EWG-3
This detail shows APA panel stair treads and risers installed on stringers in two configurations, using plywood, OSB, or composite panels with 8d common nail fastening.
Typical Details - DT-EWG-4
APA Rated sheathing panels installed as subflooring over 2x joists, I-joists, or floor trusses with tongue-and-groove or blocked edges on a wood-framed floor system.
Typical Details - DT-EWG-5
This detail shows APA Rated wall sheathing applied in two orientations- strength axis across or parallel to studs- with weather-resistive barrier and siding on a wood-framed wall.
Technical Note - R280
This publication provides specification and installation recommendations for panel subfloors to be used under hardwood flooring
Technical Guides - W345 CA
This publication describes connection requirements and application notes for APA Performance Rated Rim Board for Canadian Limit States Design
Technical Topic - TT-060
Provides a recommendation for foam plastic roof insulation over minimum Performance Category 15/32 engineered wood panels that meet the 15-minute thermal barrier requirement
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-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-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-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.
Technical Note - C465
This publication provides installation recommendations and test results for energy-saving APA Sturd-I-Wall construction
Specification Guide - SP-1102
This publication provides an overview of the APA trademark and includes a sample specification for APA Rated Sturd-I-Floor (OSB).
Typical Details - DT-EWG-9
This detail shows APA Rated Sturd-I-Floor panel installation at 32" or 48" o.c. joist spacing with tongue-and-groove joints over a crawl space floor framing system.
Typical Details - DT-EWG-10
This detail shows APA Rated Sturd-I-Floor 48 o.c. panels installed over a post-and-beam floor framing system with 4x4 posts, 4x girders, and tongue-and-groove panel edges.
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-13
This detail shows APA Rated vertical panel siding applied directly to wall framing in an APA Sturd-I-Wall system with weather-resistive barrier.
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-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-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
Technical Guides - Q230
This guide provides basic instructions for using the APA Wall Bracing Calculator
Technical Topic - TT-126
Publication answers common questions about fire-protective coatings. Certification and inspection of products with fire-protective coatings are generally outside the scope of APA.
Typical Details - DT-SIP-1
This detail shows a SIP wall beveled to support a sloped SIP roof that are connected together with panel screws and nails. It also shows sealant, roofing material and cladding.
Typical Details - DT-BB-2
This detail shows chimney counter flashing detail of base flashing over shingle underlayment and roof deck, with counter flashing embedded in brick mortar joint.
Typical Details - DT-EWG-14
This detail shows brick veneer or masonry cladding installed over APA Rated wood structural panel sheathing.
Technical Note - F410
This publication describes mechanism and construction features that contribute to siding buckling
Technical Guides - J440
This publication provides five basic steps to construct energy-saving wood wall systems that meet code, are durable to the forces of nature and help homeowners save money.
Builder Tip - S300
This publication describes how to reduce nail pops through recommended fastener selection and installation
Builder Tip - F435
This publication highlights essential details for using the APA narrow wall bracing method around garage openings.
Builder Tip - Q300
This publication describes how to prevent floor complaints and callbacks with proper floor sheathing installation
Builder Tip - K310
Describes installation techniques for plywood and OSB roof sheathing and roof ventilation techniques that will help minimize the potential for buckling of asphalt shingles
Technical Guides - M310
This publication illustrates nine construction details that improve wind resilience in residential construction, with real-world examples of each design
Technical Topic - TT-025
This publication discusses fire test results comparing the burn-through resistance of oriented strand board (OSB) and plywood.
Technical Topic - TT-006
This publication describes Tile Council of North America (TCNA) specifications for wood structural panel floor systems under ceramic tile, tested in accordance with ASTM C627
Typical Details - DT-EWG-15
This detail shows a closed soffit assembly using APA rated roof sheathing and exterior panels for the closed soffit with continuous screened or louvered venting.
Technical Note - X485
This publication explains causes of condensation, identifies areas prone to condensation issues, and provides options to control condensation
Builder Tip - M300 LA
Recomendaciones de espacio entre paneles de clasificación “APA Rated Sheathing,” los pisos de clase Sturd-I-Floor® de APA y los paneles de clasificación “APA Rated Siding."
Builder Tip - S300 LA
Esta publicación describe cómo reducir los clavos sobresalientes con la selección e instalación recomendada de elementos de fijación.
Data File - D720
This publication identifies the causes of and remedies for excessive floor vibration.
Builder Tip - Q300 LA
Esta publicación describe cómo prevenir quejas y arreglos del sistema de piso con una instalación correcta del tablero estructural.
Technical Guides - X235
This publication discusses designing, building and specifying wood structural panel containers and bins for industrial materials handling applications.
Technical Note - R495
This publication discusses decay fungi and how to prevent/minimize degradation of wood through proper design, storage, construction and maintenance
Customer Service Tip - W505
This publication discusses the causes of fungal decay in wood structural panels and how proper design, construction and maintenance can prevent fungal decay.
Technical Topic - TT-123
This publication clarifies the applicability of the D+L deflection limits specified in Table 1604.3 of the 2018 IBC, specifically as they pertain to engineered wood products.
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
Technical Topic - TT-097
This publication explains the design considerations for installing a wood structural panel diaphragm over existing board sheathing (decking) in floors or roofs.
Technical Topic - TT-014
This publication describes various wood structural panel manufacturing processes that result in the eradication of insects
Technical Guides - L350
This publication provides design and construction recommendations for engineered diaphragm systems in floor, shear wall and roof systems
Technical Topic - TT-115
This technical topic presents the results and discussion of full-scale testing of double-sheathed shear walls with both layers of wood structural panels on a single side.
Technical Topic - TT-075
This publication discusses a test program conducted by APA to investigate the effect of constructing shear walls with green framing lumber
Technical Topic - TT-012
This publication provides suggested guidelines for determining if overdriven fasteners will affect the shear capacity of diaphragm or shear wall construction
Typical Details - DT-EWG-16
This detail shows two energy-conserving exterior wall assemblies.
Typical Details - DT-RH-1
This detail shows raised heel energy truss attachment to an exterior wall for additional attic insulation space.
Technical Guides - E30
This publication provides a comprehensive overview of engineered wood construction systems for residential, commercial and industrial buildings
Excerpt - E30X-AFBS
Summary of special systems, including fire resistant construction, fire protected assemblies, wind-resistive roofs, energy conservation and panels over metal framing
Excerpt - E30X-FC
This publication is an excerpt from the APA Engineered Wood Construction Guide, providing information about floor framing and wood structural panel products
Excerpt - E30X-PSS
This publication is an excerpt from the APA Engineered Wood Construction Guide, providing product descriptions and specification recommendations for wood structural panels
Excerpt - E30X-RC
This publication is an excerpt from the APA Engineered Wood Construction Guide, providing a description and application recommendations for engineered wood roof materials
Excerpt - E30X-WC
This publication is an excerpt from the APA Engineered Wood Construction Guide, providing application recommendations for APA wood structural panel wall sheathing.
Construction Guide - R300
Provides specification recommendations for plywood and OSB floor systems, the APA Glued Floor System and installation recommendations for panel subflooring and underlayment
Technical Guides - X505
This publication provides a list of engineered wood products and common construction terminology explained in easy-to-understand language.
Case Studies - Z110
This case study discusses how a Sprouts grocery store used engineered wood instead of steel for the roof system to solve supply chain challenges and reduce their carbon footprint.
Construction Guide - R310
This publication provides an overview of commonly used wall systems and explains how wood structural panels can be used to meet fundamental requirements in wall applications
ESR Joint Evaluation Report - ESR-1301
OSB:
Typical Details - DT-BB-3
This detail shows exterior deck ledger connection to wood I-joist floor system of water-resistant flashing.
Technical Topic - TT-133
This publication discusses buckling, fastener recommendations, surface flaking, thickness swell, linear expansion and moisture management of OSB wood structural panels
FAQ - F505
This publication answers questions about structural plywood and OSB panel performance, grade, growth and natural characteristics.
FAQ - X501
This publication provides guidance about the serviceability of wood structural panels (plywood and OSB) after exposure to high levels of moisture.
Builder Tip - Q350
This publication describes recommended finishes and application recommendations for APA Rated Siding.
Technical Guides - W305
This publication is a guide to cost-effective fire-rated wood and wood structural panel systems that meet code requirements
Technical Topic - TT-010
This publication summarizes surface burning characteristics (flame spread and smoke development) of wood structural panels tested in accordance with ASTM E84
Technical Topic - TT-128
This publication discusses the results of a series of CAN/ULC-S102 tests of flame-spread rating (FSR) and smoke developed classification (SDC) for OSB sheathing in Canada
Technical Note - C468
This publication discusses typical floor squeak causes and provides corrections and preventative measures.
Typical Details - DT-EWG-17
This detail shows an FM Class 1-105 rated flat roof assembly using wood structural panels over open-web trusses.
Typical Details - DT-EWG-18
This detail shows an FM Class 1-120 rated flat roof assembly using wood structural panels over steel joists.
Typical Details - DT-EWG-19
This detail shows an FM Class 1-135 rated flat roof assembly using wood structural panels.
Typical Details - DT-EWG-20
This detail shows an FM Class 1-90 rated flat roof assembly using wood structural panels with foam insulation, fiberboard cover board, and built-up or modified bitumen roofing.
Typical Details - DT-SIP-2
This detail shows roof SIPs sloped up to form a ridge and connections of the SIPs to framing members with panel screws, while also showing tape, sealant, and roofing materials.
Typical Details - DT-FTO-1
This detail shows the layout of a force transfer around opening shear wall.