Technical Document Library

19/32" T&G APA Plywood Underlayment, 15/32" APA Wood Structural Panel Subfloor, 3-Dimensional Detail 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. 2021 Supplement to: A Guide to the 2018 IRC Wood Wall Bracing Provisions Technical Guides - 2026 Structural Panel & Engineered Wood Yearbook 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. 2125 Franklin Student Housing 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. 303 Siding Manufacturing Specifications Data File - B840 This publication provides minimum requirements that plywood panels must meet to qualify for classification as APA 303 Series specialty siding. A Guide To Engineered Wood Products 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. A Guide to the 2015 IRC Wood Wall Bracing Provisions Technical Guides - A Guide to the 2015 IRC Wood Wall Bracing Provisions A Guide to the 2018 IRC Wood Wall Bracing Provisions + Free Digital 2021 Supplement Technical Guides - A Guide to the 2018 IRC Wood Wall Bracing Provisions + Free Digital 2021 Supplement 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 Acoustic Performance of All-Wood Floor Systems 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 Advanced Framing Construction Guide - M400 This publication explains the components of advanced framing in floor and wall framing, including illustrated construction details Advanced Framing Boosts Energy Performance 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. Air Permeability of Wood Structural Panels as Air Barriers Technical Topic - TT-107 This publication answers questions regarding the performance of wood structural panels as air barriers All-Wood Podiums in Mid-Rise Construction 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. Alternate Insulated Three-Stud Corner (with Drywall Clips) 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. ANSI/APA PRP 210-2024: Standard for Performance-Rated Engineered Wood Siding 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. APA - The Mark of Quality for Wood Structural Panels Technical Guides - X400 This publication explains the APA panel trademark and quality standards for wood structural panels APA Glued Floor System Typical Details - DT-EWG-1 This detail shows an APA glued floor system using APA Rated Sturd-I-Floor or sheathing panels. APA Laboratory Testing Capabilities B707 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 APA Panel Roof Sheathing Typical Details - DT-EWG-2 This detail shows APA Rated sheathing panels installed as roof decking over rafters or trusses with panel clips, asphalt or wood shingles, and proper edge and joint spacing. APA Panel Stair Treads and Risers 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. APA Panel Subflooring 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. APA Panel Wall Sheathing 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. APA Panel-Deck Block Pallet Design and Specifications Technical Guides - V691 Discusses specifications and design details for the APA panel-deck block pallet, including load capacity, nailing schedules and materials handling system compatibility. APA Performance Rated Panel Subfloors Under Hardwood Flooring Technical Note - R280 This publication provides specification and installation recommendations for panel subfloors to be used under hardwood flooring APA Performance-Rated Rim Board - Canadian Limit States Design Technical Guides - W345 CA This publication describes connection requirements and application notes for APA Performance Rated Rim Board for Canadian Limit States Design APA Performance-Rated Wood Structural Panels as Thermal Barriers for Foam Plastics 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 APA Rated Lap Siding Over Wood Structural Panel Sheathing 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. APA Rated Panel Siding Over Wood Structural Panel Sheathing 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. APA Rated Sheathing Specification Guide - SP-1103 This publication provides an overview of the APA trademark and includes a sample specification for APA Rated Sheathing. APA Rated Siding Exterior or Other Exterior Finish (Code-Recognized Type), 5/8" Type X Gypsum Sheathing, Minimum 15/32" APA Rated Sheathing Exposure 1 OSB or Plywood 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. APA Rated Siding Exterior or Other Exterior Finish (Code-Recognized Type), 5/8" Type X Gypsum Sheathing, Minimum 7/16" APA Rated Sheathing Exposure 1 OSB or Plywood 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. APA Rated Siding Exterior, 5/8" Type X Gypsum Sheathing 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. APA Rated Siding Panels Over Rigid Foam Insulation Sheathing Technical Note - C465 This publication provides installation recommendations and test results for energy-saving APA Sturd-I-Wall construction APA Rated Sturd-I-Floor (OSB) 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). APA Rated Sturd-I-Floor (Plywood) Specification Guide - SP-1102 This publication provides an overview of the APA trademark and includes a sample specification for APA Rated Sturd-I-Floor (Plywood). APA Rated Sturd-I-Floor 16, 20, and 24 o.c. Typical Details - DT-EWG-8 This detail shows APA Rated Sturd-I-Floor panel installation at 16", 20", or 24" o.c. joist spacing with tongue-and-groove edges over a floor framing system. APA Rated Sturd-I-Floor 32 and 48 o.c. 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. APA Rated Sturd-I-Floor 48 o.c. 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. APA Sturd-I-Wall (Horizontal Panel Siding Installation) 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. APA Sturd-I-Wall (Vertical Panel Installation) 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. APA System Report 101: Design for Combined Shear and Uplift from Wind 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 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). APA System Report 103: Use of Wood Structural Panels for Energy-Heel Trusses 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 APA Wall Bracing Calculator Quick Start Guide Technical Guides - Q230 This guide provides basic instructions for using the APA Wall Bracing Calculator APA Wood Structural Panels Over Concrete Slabs Technical Topic - TT-007 This publication recommends three methods for the installation of a wood floor system over a concrete slab: sleepers, rigid foam or direct. Applicability of APA Trademarks on Engineered Wood Products Surface-Coated with Fire Protective Coatings 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. Audrain Museum Case Studies - Q125 This case study explains how glulam beams were used to replace the flooring system of the historic Audrian Building, enabling the building to support multi-ton vintage automobiles. Beauty and the Budget Case Studies - V130 This publication describes how LEVER Architecture used engineered wood to balance design, budget and sustainability goals in a Portland, OR, commercial building project. Beveled SIP Wall 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. Brick Counter Flashing Details 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. Brick Veneer Over APA Panel Sheathing Typical Details - DT-EWG-14 This detail shows brick veneer or masonry cladding installed over APA Rated wood structural panel sheathing. Buckling of Wood-Based Panel Siding Technical Note - F410 This publication describes mechanism and construction features that contribute to siding buckling Build A Better Home: Moisture-Resistant Foundation Construction Build A Better Home - A520 This publication details common sources of moisture, preventive measures and design details for multiple foundation types, including slab-on-grade, crawl space and full basement. Build Energy Efficient Walls 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 Tips: 4 Ways to Minimize Nail Pops Builder Tip - S300 This publication describes how to reduce nail pops through recommended fastener selection and installation Builder Tips: APA Portal Frame Bracing Method Framing Tips Builder Tip - F435 This publication highlights essential details for using the APA narrow wall bracing method around garage openings. Builder Tips: Construct a Solid, Squeak-Free Floor System Builder Tip - Q300 This publication describes how to prevent floor complaints and callbacks with proper floor sheathing installation Builder Tips: How to Minimize Buckling of Asphalt Shingles 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 Builder Tips: Prevent Buckling with Proper Spacing Builder Tip - M300 This publication contains spacing recommendations for APA Rated Sheathing, APA Rated Sturd-I-Floor® and APA Rated Siding. Builder Tips: Proper Selection and Installation of APA Plywood Underlayment Builder Tip - R340 This publication provides an overview of selection, handling, installation and fastening of APA plywood underlayment. 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 Burn-Through Resistance of OSB Panels Technical Topic - TT-025 This publication discusses fire test results comparing the burn-through resistance of oriented strand board (OSB) and plywood. California Wildland Urban Interface Approvals for APA Siding 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. Canadian Plywood Grading Guide Technical Guides - Q701 This publication is designed for use by mills as an aid in manufacturing and grading Canadian Standards Association (CSA) plywood panels. Caster Loadings on Plywood Technical Note - X227 This publication discusses recommended maximum caster loadings for various wheel types and sizes on bare plywood, Plyron and overlaid plywood surfaces. Ceramic Tile Over Wood Structural Panel Floors 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 Closed Soffit 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. Concrete Forming Design/Construction Guide Technical Guides - V345 This publication contains grade information, form maintenance recommendations, design information and case studies related to plywood concrete forming Condensation, Causes and Control Technical Note - X485 This publication explains causes of condensation, identifies areas prone to condensation issues, and provides options to control condensation Consejos Para Los Constructores: Evite el Pandeo con un Espaciado Adecuado 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." Consejos Para Los Constructores: Minimice los Clavos Sobresalientes Builder Tip - S300 LA Esta publicación describe cómo reducir los clavos sobresalientes con la selección e instalación recomendada de elementos de fijación. Construction Practices for Wood I-Joist Floor Vibration Retrofit Data File - D720 This publication identifies the causes of and remedies for excessive floor vibration. Construir un Sistema de Piso Sólido, Libre de Chirridos Builder Tip - Q300 LA Esta publicación describe cómo prevenir quejas y arreglos del sistema de piso con una instalación correcta del tablero estructural. Containers and Bins Technical Guides - X235 This publication discusses designing, building and specifying wood structural panel containers and bins for industrial materials handling applications. Controlling Decay in Wood Construction Technical Note - R495 This publication discusses decay fungi and how to prevent/minimize degradation of wood through proper design, storage, construction and maintenance Data File: Selection, Installation and Preparation of Plywood Underlayment Data File - L335 This publication provides recommendations for the installation and preparation of underlayment under finish flooring in residential and light commercial applications Decay of Engineered Wood Products 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. Deflection Limits in the 2018 IBC for Engineered Wood Products 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. 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 Designing Diaphragms Over Existing Board Floors or Roofs 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. Destruction of Insects During Manufacture of Wood Structural Panels and Structural Composite Lumber Technical Topic - TT-014 This publication describes various wood structural panel manufacturing processes that result in the eradication of insects 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 Double-Sheathed Shear Walls 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. Dusting of Concrete Poured Against Plywood Forms Technical Topic - TT-029 This publication discusses causes of surface dusting on concrete surfaces when poured against plywood forms and provides tips for prevention and remedial action. Effect of Green Lumber Framing on Wood Structural Panel Shear Wall Performance 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 Effect of Overdriven Fasteners On Shear Capacity 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 Energy-Conserving Wall Assemblies Typical Details - DT-EWG-16 This detail shows two energy-conserving exterior wall assemblies. Energy-Heel Truss Attachment to Sheathing Typical Details - DT-RH-1 This detail shows raised heel energy truss attachment to an exterior wall for additional attic insulation space. Engineered Wood Construction Guide Technical Guides - E30 This publication provides a comprehensive overview of engineered wood construction systems for residential, commercial and industrial buildings Engineered Wood Construction Guide: Additional Fire and Building Systems Excerpt - E30X-AFBS Summary of special systems, including fire resistant construction, fire protected assemblies, wind-resistive roofs, energy conservation and panels over metal framing Engineered Wood Construction Guide: Floor Construction 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 Engineered Wood Construction Guide: Panel Selection and Specification 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 Engineered Wood Construction Guide: Roof Construction 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 Engineered Wood Construction Guide: Wall Construction 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. Engineered Wood Floor Systems (Canada) 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 Engineered Wood Gets an Easy A Case Studies - W170 This case study discusses two Washington school districts that creatively leveraged the benefits of exposed wood products in newly constructed schools. Engineered Wood Handbook & Grade Glossary Technical Guides - X505 This publication provides a list of engineered wood products and common construction terminology explained in easy-to-understand language. Engineered Wood Sprouts Solutions for Supermarket Chain 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. Engineered Wood Wall Systems (Canada) 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 Engineering Solutions for a More Inclusive Community Case Studies - X175 This publication discusses how a California nonprofit incorporated engineered wood into an affordable housing complex to keep costs low and create an inclusive community ESR Joint Evaluation Report - ESR-1301 LP OSB:
LP® SmartSide® and LP® SmartSide® ExpertFinish® Treated-Engineered-Wood Lap, Panel, Shake Lap, Nickel Gap Lap and Vertical Siding Exterior Deck Water-Resistive System Typical Details - DT-BB-3 This detail shows exterior deck ledger connection to wood I-joist floor system of water-resistant flashing. FAQs About Oriented Strand Board Technical Topic - TT-133 This publication discusses buckling, fastener recommendations, surface flaking, thickness swell, linear expansion and moisture management of OSB wood structural panels 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. Fastener Loads for Plywood - Screws Technical Note - E830 This publication summarizes APA test data on ultimate withdrawal and ultimate lateral loads for plywood joints fastened with wood screws and sheet metal screws. Field Repairs of Plywood Technical Note - J805 This publication describes methods for field restoration of plywood to near its original condition and appearance Finishing APA Rated Siding Builder Tip - Q350 This publication describes recommended finishes and application recommendations for APA Rated Siding. 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 Fire-Retardant-Treated (FRT) Plywood Technical Note - K320 Discusses fire-retardant-treated plywood specifications, code-compliant applications, testing standards and structural requirements for commercial and residential construction. Flame Spread Index of APA Performance-Rated Wood Structural Panels 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 Flame-Spread Rating for Oriented Strand Board (OSB) Sheathing in Canada 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 Floor Squeaks: Causes, Solutions and Prevention Technical Note - C468 This publication discusses typical floor squeak causes and provides corrections and preventative measures. FM Class 1-105 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. FM Class 1-120 Typical Details - DT-EWG-18 This detail shows an FM Class 1-120 rated flat roof assembly using wood structural panels over steel joists. FM Class 1-135 Typical Details - DT-EWG-19 This detail shows an FM Class 1-135 rated flat roof assembly using wood structural panels. FM Class 1-90 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. Foam SIP Ridge Cap Detail 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. Force Transfer Around Openings Shear Walls Typical Details - DT-FTO-1 This detail shows the layout of a force transfer around opening shear wall. Formaldehyde and Engineered Wood Products 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. Frequently Asked Questions About Portal Frames Technical Topic - TT-080 This publication answers FAQs about portal frame construction from the APA 2018 IRC wall bracing webinar series Going for Bold: Window Into Affordability Case Studies - X170 This case study discusses how the Las Ventanas affordable housing project used glulam, LVL, OSB and FTAO design principles to cut costs and streamline construction. Hanging Floor for SIPs Typical Details - DT-SIP-3 This detail shows how to attach a floor system in between the top and bottom of two SIP walls by hanging the joists at the top of a SIP with top mount hangers and a cap plate. Heavily Loaded Drywall Carts Technical Topic - TT-024 This publication discusses how to avoid floor panel puncture from drywall carts by consulting PS 2 for minimum concentrated static loads and heavy concentrated loads Heavy Timber Construction Typical Details - DT-EWG-21 This detail shows a heavy timber roof construction assembly using APA Rated Sturd-I-Floor T&G panels over structural glulam or solid timber beams with built-up roofing. Horizontal Beltline Joints Typical Details - DT-EWG-22 This detail shows three horizontal beltline joint configurations for APA panel siding at floor lines in multistory construction. Horizontal Wall Joints Typical Details - DT-EWG-23 This detail shows three horizontal joint configurations for APA panel siding — butt and flash, lap, and shiplap — each with blocking flatwise or edgewise at the joint location. I-Joist Floor Details for 2-Inch-Thick Foundation Foam Insulation Technical Topic - TT-129 This publication presents four construction details for incorporating 2-inch-thick foundation foam insulation into residential I-joist floor assemblies. IECC Compliance Options for Wood-Frame Wall Assemblies Technical Guides - P320 Joint ICC and APA publication describes how energy performance is measured in exterior wall assemblies and how to improve wall thermal performance to meet energy code requirements Imported Plywood Panels from Brazil 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 Installation of APA Plywood Underlayment Typical Details - DT-EWG-24 This detail shows APA plywood underlayment installation over APA Rated sheathing subfloor. Installation of Stucco Exterior Finish Over Wood Structural Panel Wall Sheathing Data File - Q370 This publication describes recommended wall construction methods for the installation of stucco exterior finish over structural wood panel wall sheathing Insulated Three-Stud Corner (California Corner) Typical Details - DT-AF-2 This detail shows an insulated three-stud outside corner (California corner) framing assembly. Insulated Three-Stud Corner (Inside Corner) Typical Details - DT-AF-3 This detail shows an insulated three-stud inside corner framing assembly. Introduction to Lateral Design Technical Guides - X305 This publication explains how to design wood-frame buildings to withstand the lateral loads typical of high wind and seismic zones. Introduction to Wall Bracing Technical Guides - F430 This publication explains IRC-compliant wall bracing, explains why bracing is important and shows how to meet basic requirements for wall bracing in accordance with the code Joint Research Report: Evaluation of Force Transfer Around Openings - Experimental and Analytical Studies 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. La Importancia de Cumplir con la Normativa del Encofrado de Concreto Technical Guides - A236 LA las especificaciones de la norma PS 1 para madera contrachapada para cumplir con los criterios de rendimiento de los materiales establecidos en ACI 318/347, según lo exige el IBC Laboratory Tests Evaluate Design Values of Thermo-Ply® Red Product Advisory - SP-1172 This product advisory contains results of testing to measure the shear wall performance of Thermo-Ply® sheathing Lateral Load Connections for Low-Slope Roof Diaphragms Data File - Z350 This publication describes techniques and products for code-required connections in wood roof systems in high wind and seismic zones. Lightweight or Gypsum Concrete Topping, 15/32" APA Wood Structural Panel Subfloor, 3-Dimensional Detail Typical Details - DT-FR-5 This detail shows three-dimensional floor assembly of APA wood structural panel subflooring with gypsum concrete topping over joists and Type X gypsum wallboard ceiling below. Load-Bearing Fire-Rated Wall Assemblies with OSB & Plywood Wall Sheathing Technical Topic - TT-063 This publication discusses the advantages of using IBC and UL recognized oriented strand board (OSB) and plywood wall assemblies over other products. Load-Bearing Interior (Chase) Wall System Typical Details - DT-FR-6 Fire-rated load bearing interior chase wall assembly with gypsum wallboard, plywood sheathing, insulation cavity, and 1-inch space between stud walls at 16- or 24-inch centers. 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 Materials Handling Technical Guides - M200 This publication discusses the use of APA-trademarked wood structural panels in materials handling applications including pallets, crates, bins, shelving and mezzanine floors. Method ABW – Alternate Braced Wall Typical Details - DT-WB-2 This detail shows the alternate braced wall bracing method and its requirements including sheathing fastening, framing requirements, and foundation anchorage. Method CS-PF - Continuously Sheathed Portal Frame Panel Construction Typical Details - DT-WB-4 This detail shows the wall bracing method continuously sheathed portal frame and its requirements including anchorage, minimum member sizes, and sheathing attachment. Method PFG – Intermittent Portal Frame at Garage Door Openings in SDC A, B and C Typical Details - DT-WB-7 This detail shows the wall bracing method portal frame at a garage and its requirements including sheathing attachment, minimum member sizes, and anchorage. Method PFH – Intermittent Portal Frame with Hold Down Typical Details - DT-WB-9 This detail shows the wall bracing method portal frame with hold down and its requirements including minimum framing sizes, sheathing attachment, hold-downs, and anchorage. Minimizing Buckling of Wood Structural Panels Technical Note - D481 Provides design and construction practices that reduce the potential for buckling of wood structural panel sheathing caused by wood expansion due to increased moisture conditions. Minimum 1/2" APA Rated Siding Exterior Plywood, 1" Rigid Foam Insulation Sheathing; Exterior Finish-Elastomeric Coating, 1" Rigid Foam Insulation Sheathing, Minimum 1/2" APA Rated Sheathing Exposure 1 Plywood 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. Minimum 3/8" APA Rated Siding Exterior Plywood 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. Moisture Control in Low Slope Roofs Technical Note - R525 This publication provides recommendations for minimizing moisture accumulation in panelized low-slope roof systems in commercial and industrial applications Moisture Exposure Recommendations for Wood Structural Panels Technical Topic - TT-002 This publication provides recommended bond classification appropriate for end use in-service moisture conditions. Moisture-Related Dimensional Stability Technical Topic - TT-028 This publication discusses linear expansion and thickness swell in wood structural panels due to moisture Monthly Housing Report Annual Subscription 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. Mulching Engineered Wood Products: An Alternative to Landfills Technical Topic - TT-098 This publication discusses the benefits of mulching construction-related wood scraps, including glued engineered wood products Nail-Base Sheathing for Siding and Trim Attachment Construction Guide 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) Nailed Box Beam Design Example Technical Topic - TT-116 This publication describes box beam design using engineering mechanics. Nailer Anchored with Power Driven Fasteners Typical Details - DT-WOM-1 This detail shows wood nailer attachment to steel wide flange beam using drive pins to support APA panel deck, secured with power driven fasteners. Noise-Rated Systems Technical Guides - W460 This publication is a guide to noise-rated wood-frame construction systems, including STC and IIC ratings for tested wall and floor assemblies for effective sound control. Noise-Resistant Floor Assembly Typical Details - DT-EWG-26 This detail shows noise-resistant floor/ceiling assembly using APA Rated sheathing subfloor, lightweight concrete topping, resilient channels, and gypsum wallboard. Noise-Resistant Party Wall Typical Details - DT-EWG-27 This detail shows a noise-resistant wall assembly in plan view using staggered 2x4 studs on 2x6 plates with APA Rated sheathing and gypsum wallboard to reduce sound transmission. Non-Load-Bearing Partitions on APA Structural Panels and Floor Joists Technical Note - B429 This publication explains how to determine partition load, including situations where additional joists are required to account for the weight of partition walls. One-Hour Combustible Floor-Ceiling And Roof-Ceiling Assemblies - I-Joists Typical Details - DT-EWG-28 This detail shows one-hour fire-resistive floor/ceiling assemblies using wood I-joists with APA Sturd-I-Floor decking and gypsum wallboard ceiling systems with furring channels. One-Hour Combustible Floor-Ceiling Assemblies - Lumber Joists Typical Details - DT-EWG-29 This detail shows two one-hour fire-rated floor/ceiling assemblies with lumber joists. One-Hour Fire-Rated Exterior Load-Bearing Wall Assembly Typical Details - DT-EWG-30 One-hour fire-rated exterior wall assembly using APA Rated siding, gypsum sheathing, weather-resistive barrier, and Type X gypsum wallboard over 2x4 wood stud framing. One-Sided Wood Structural Panel Box Header Typical Details - DT-AF-8 This detail shows a one-sided box header built using wood structural panels on the exterior face of the wall to eliminate conventional headers and increase cavity insulation space. Open Soffit Typical Details - DT-EWG-31 This detail shows APA Rated sheathing panels installed as an open soffit on exposed roof rafters with weather-protected edges. 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 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. Panel Edge Support for Narrow-Width Roof Sheathing Technical Note - R275 This publication provides recommendations from APA research on the performance of 24-inch and narrower roof sheathing panels Panel Thickness Tolerances and Labeling Technical Topic - TT-054 This publication provides guidance on how to comply with NIST panel thickness regulations while still providing for traditional specifications used in the U.S. model building codes Panels Attached Directly to Formed Steel Joist Typical Details - DT-WOM-2 This cross-section detail shows APA panel deck attachment to metal C or box section joist using hardened screwshank nails or self-tapping fasteners with optional adhesive. Panels for Soffit Applications Builder Tip - N330 This publication discusses recommended panels and spans for open and closed soffits. Panels Nailed to Nailable Steel Joists Typical Details - DT-WOM-3 This connection detail shows APA panel deck attachment to nailable steel joists using hardened screwshank nails and 2x4 nailer blocking at panel edges. Performance of Flexible Structural Sheathing Product Advisory - SP-1186 This publication discusses overstated published lateral load design properties of eight flexible structural sheathing products Performance Rated Panels Product Guide - F405 This product guide describes performance standards, applications, trademark and performance category information for APA Performance Rated Panels Performance Standards and Qualification Policy for Wood Structural Panels Standards - E445 This publication describes requirements and test methods for APA Performance Rated Panels (APA Rated Sturd-I-Floor®, APA Rated Sheathing and APA Rated Siding). Plywood Design Specification Technical Guides - Y510 This publication includes section properties, recommended design stresses and design methods for plywood manufactured under Voluntary Product Standard PS 1 Plywood Design Specification, Supplement 1-23: Design and Fabrication of Plywood Curved Panels Technical Guides - S811 This publication presents the recommended method for the design and fabrication of curved plywood roof panels. It is a supplement to the APA plywood design specification. Plywood Design Specification, Supplement 2-23: Design and Fabrication of Glued Plywood-Lumber Beams Technical Guides - S812 This publication presents the recommended method for the design and fabrication of glued plywood and lumber beams. Plywood Design Specification, Supplement 3-23: Design and Fabrication of Plywood Stressed-Skin Panels Technical Guides - U813 This publication provides recommendations for the design and fabrication of plywood stressed-skin panels. It is a supplement to the APA Plywood Design Specification. Plywood Design Specification, Supplement 4-23: Design and Fabrication of Sandwich Panels Technical Guides - U814 This publication presents the recommended method for the design and fabrication of flat plywood sandwich panels. It is a supplement to the APA Plywood Design Specification. Plywood Design Specification, Supplement 5-23: Design and Fabrication of All-Plywood Beams Technical Guides - H815 This publication presents the recommended methods for the design and fabrication of staple-glued all-plywood beams. Plywood or OSB? Used as Intended, the Two Products are Interchangable 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 APA Product Reports - PR-C302 Roseburg Forest Products Company Plywood:
DuraTemp® Lap and Panel Siding APA Product Reports - PR-E710 Multiple Companies Hardel Mutual Plywood Corporation, Rayonier, Roseburg Forest Products Company, Tolko Industries Ltd.

Plywood, OSB:
Qualified Wood Structural Panels with Low Formaldehyde Emissions APA Product Reports - PR-N117 LP OSB:
LP® SmartSide® and LP® SmartSide®  ExpertFinish® Soffit and Rated Sheathing/Ceiling Deck and LP® SmartSide® Soffit and LP® SmartSide®  ExpertFinish Treated-Engineered-Wood Nickel Gap Lap APA Product Reports - PR-N124 LP OSB:
LP® SmartSide® and LP® SmartSide® ExpertFinish® Treated-Engineered-Wood Lap Panel, Shake Lap, Nickel Gap Lap, and Vertical Siding APA Product Reports - PR-N127 LP OSB:
LP Legacy® Premium Sub-Flooring APA Product Reports - PR-N129 RoyOMartin OSB:
RoyOMartin TuffStrand® and Windbrace® 7/16 Performance Category OSB APA Product Reports - PR-N133 West Fraser Timber Co. Ltd. OSB:
West Fraser TallWall/Windstorm/QuakeZone® Rated Sheathing for Use with IRC Energy-Heel Trusses APA Product Reports - PR-N135 Georgia-Pacific Wood Products LLC OSB:
Georgia-Pacific DryMax® Industrial Panel APA Product Reports - PR-N136 Georgia-Pacific Wood Products LLC OSB:
Georgia-Pacific ForceField® Weather-Resistive Barrier OSB APA Product Reports - PR-N137 RoyOMartin OSB:
RoyOMartin WINDBRACE OSB Sheathing for Combined Shear and Wind Uplift APA Product Reports - PR-N138 LP OSB:
LP WeatherLogic® Air & Water Barrier APA Product Reports - PR-N139 LP OSB:
LP NovaCore® Thermal Insulated Sheathing APA Product Reports - PR-N140 LP OSB:
LP BuilderSeries® Treated-Engineered-Wood Lap Siding with SmartLock™ Technology APA Product Reports - PR-N141 LP OSB:
Louisiana-Pacific Corporation BURNGUARD™ FRT OSB APA Product Reports - PR-N213 West Fraser Timber Co. Ltd. OSB:
West Fraser Treated OSB APA Product Reports - PR-N215 West Fraser Timber Co. Ltd. OSB:
West Fraser TruFlor pointSIX SIF OSB and Durastrand pointSIX SIF OSB APA Product Reports - PR-N216 Tolko Industries Ltd. OSB:
Tolko Zinc-Borate Treated OSB APA Product Reports - PR-N217 Plywood, OSB:
Performance Standards and Qualification Policy for Wood Structural Panels and Performance Standard for 303 Siding APA Product Reports - PR-N414 West Fraser Timber Co. Ltd. OSB:
West Fraser Concrete Edge Form APA Product Reports - PR-N610 Multiple Companies LP, Tolko Industries Ltd., West Fraser Timber Co. Ltd.

OSB:
Qualified OSB Facing Materials for Structural Insulated Panels APA Product Reports - PR-N612 West Fraser Timber Co. Ltd. OSB:
West Fraser 7/16 Proprietary OSB Facers for SIPs APA Product Reports - PR-N614 Tolko Industries Ltd. OSB:
Tolko Proprietary OSB Facers for SIPs APA Product Reports - PR-N801 West Fraser Timber Co. Ltd. OSB:
West Fraser Core Stock Panels APA Product Reports - PR-V180 Warmboard, Inc. Plywood:
Warmboard-S® Radiant Floor Heating Panels Preframed Roof Panel 8' x 8' Perpendicular to Supports Typical Details - DT-EWG-32 This detail shows a prefabricated APA wood structural panel roof assembly with purlins installed perpendicular to the supports. Preservative Treated Plywood Data File - Q220 This publication discusses preservative-treated plywood covering treatment types, use categories, retention levels, fasteners, finishing and safe handling per AWPA standards. Prevent Callbacks in Wood Flooring Installation Technical Note - T350 This publication discusses how to minimize the risk of future wood flooring problems when moisture at the jobsite is an issue Product Guide: HDO/MDO Plywood Product Guide - B360 Describes high density overlay (HDO) and medium density overlay (MDO) plywood applications, properties and characteristics, and shop practice and finishing recommendations Product Guide: Performance Rated Siding Product Guide - E300 Describes the following for performance rated siding: face grades, textures and patterns; finishing; ordering/specifying; basic application recommendations Product Guide: Sanded Plywood Product Guide - K435 This publication describes the specification, advantages, applications and finishing recommendations of sanded plywood and includes trademark examples and explanations Proper Installation of APA Rated Sheathing for Roof Applications Builder Tip - N335 This publication provides step-by-step instructions for roof sheathing installation Quarterly Production Report Q1-26 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 Quarterly Production Report Q2-26 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 R20 Wall—2x4 Framing Typical Details - DT-CWA-1 This detail shows R20 2x4 wall assembly at 16" o.c. with insulated header, insulated siding (R3 min.), insulated corner, R15 cavity insulation, and wood structural panel sheathing. R20 Wall—Advanced Framing Techniques Typical Details - DT-CWA-2 R20 advanced framing wall assembly at 24" o.c. minimum with insulated corner, engineered wood or lumber header, R19 compressed fiberglass batts & wood structural panel sheathing. R20 Wall—Insulated Headers Typical Details - DT-CWA-3 This detail shows R20 wall assembly at 24" o.c. with insulated header (R13.8), insulated corner, R21 cavity insulation, and wood structural panel sheathing with wood/vinyl siding. R20 Wall—Insulated 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. R21 Wall—Advanced Framing Techniques Typical Details - DT-CWA-5 This detail shows R21 advanced framing wall assembly with insulated header and corner, wood structural panel sheathing, and fiberglass batt insulation at 16" or 24" o.c. spacing. Rain-Screen Wall Details Typical Details - DT-BB-4 This detail shows rain-screen wall assembly of furring strips creating a drainage airspace over water-resistive barrier and wood structural panel sheathing. Raised-Heel Trusses for Efficient, Cost-Effective, Comfortable Homes Technical Guides - R330 This publication describes the key components of raised-heel trusses and identifies the advantages of using them in conjunction with continuous wood structural panel wall sheathing Recommendations for Snow and Ice on Wood Structural Panels Technical Topic - TT-119 This publication describes APA recommended guidelines for snow and ice accumulation on wood structural panels Recommended Uniform Live Loads for PS 1 APA 303 Siding 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. Requirements for Wall Coverings and Wind Pressures Technical Topic - TT-105 This publication discusses the International Residential Code (IRC) wall sheathing requirements regarding wind pressure Research Report 138: Plywood Diaphragms Research Report - E315 This publication describes tests of high-load diaphragms with multiple rows of fasteners, glued diaphragms, and diaphragms with openings Research Report 154: Wood Structural Panel Shear Walls Research Report - Q260 This report includes test results of unblocked, stapled and metal-framed shear walls, and a summary of previous shear wall tests. Ridging in Single Layer Floor Panels Customer Service Tip - W503 This publication discusses the causes, prevention and remedial treatment for floor sheathing ridging. Rim Board for SIPs Typical Details - DT-SIP-4 This detail shows installation of a floor system between the top and bottom of two SIP walls with the joists directly on top of the SIP with a cap plate and rim board end closure. Roof Construction (Canada) Construction Guide - R305 This publication provides specification recommendations for plywood and OSB roof systems and installation recommendations for panel roofs Roof Ridge Detail—Pan and Cover Tile Typical Details - DT-BB-5 This detail shows pan and cover tile roof ridge detail of APA rated sheathing. Santa Barbara Apartments Case Studies - S125 This case study discusses how glulam beams and wood structural panel shear walls were used to construct a California apartment complex on budget. Service Life of Oriented Strand Board (OSB) Sheathing Technical Topic - TT-052 This publication provides information about the performance, proper specification and application of oriented strand board (OSB) products. Shear Transfer at Engineered Wood Floors Data File - Y250 This publication discusses diaphragm perimeter nailing and transfer of shear wall forces from the walls above into the foundation/wall framing. Shear Wall Hold-Down Anchor Typical Details - DT-EWG-33 This detail shows a hold down anchor assembly connecting a shear wall to a concrete foundation to resist overturning forces. Shear Wall Lumber Framing: Double 2X Framing vs. Single 3X Framing at Adjoining Panel Edges Technical Topic - TT-076 This publication provides an evaluation of double 2x framing members as substitutes when single 3x framing members at adjoining panel edges are specified by code for shear walls Shear Wall Test Results Comparing 8d Common and 8d Box Nails Technical Topic - TT-087 This publication provides results from full-scale shear-wall tests and demonstrates the conservative capacities given in ESR-1539. Simple Air Sealing with OSB and Plywood Sheathing Technical Guides - T210 This publication details 10 common sources of air infiltration that should be checked and sealed during construction Single-Layer Floor Systems with I-Joists or Trusses: Minimum 23/32" T&G APA Sturd-I-Floor Glued and Nailed to I-Joist, 0.026" Galvanized Steel Hat-shaped Furring Channels, Maximum 16" o.c., 3-Dimensional Detail Typical Details - DT-FR-16 This detail shows a single-layer 23/32" T&G APA Sturd-I-Floor assembly over wood I-joists with hat-shaped furring channels, mineral fiber batts, and Type C gypsum wallboard ceiling Single-Layer Floor Systems with I-Joists or Trusses: Minimum 23/32" T&G APA Sturd-I-Floor, 0.019" Galvanized Steel Resilient Channels Maximum 16" o.c., Two Layers 1/2" Type X Gypsum Wallboard Taped, 3-Dimensional Detail Typical Details - DT-FR-20 Single-layer tongue and groove APA-rated sheathing over wood I-joists with resilient channels and two layers of gypsum wallboard ceiling assembly for residential construction. Single-Layer Floor Systems with I-Joists or Trusses: Minimum 23/32" Tongue & Groove APA Sturd-I-Floor Glued and Nailed to I-Joist, 0.019" Galvanized Steel Resilient Channels Maximum 16" o.c., 3-Dimensional Detail Typical Details - DT-FR-15 Single-layer tongue and groove APA-rated sheathing over wood I-joists with resilient channels and two layers of gypsum wallboard ceiling assembly for residential construction. Single-Layer Floor Systems with I-Joists or Trusses: Minimum 23/32" Tongue & Groove APA Sturd-I-Floor, 0.019" Galvanized Steel Hat-Shaped Furring Channels Maximum 24" o.c., 3-Dimensional Detail Typical Details - DT-FR-18 Single-layer tongue and groove APA-rated sheathing floor system with wood I-joists, hat-shaped furring channels, gypsum wallboard ceiling, and mineral fiber insulation. Single-Layer Floor Systems with I-Joists or Trusses: Minimum 23/32" Tongue & Groove APA Sturd-I-Floor, 0.019" Galvanized Steel Resilient Channels Maximum 16" o.c., 1x4 Wood Setting Strips, 3-Dimensional Detail Typical Details - DT-FR-19 This detail shows a single-layer floor assembly using 23/32 T&G APA Sturd-I-floor over wood I-joists with resilient channels, insulation, and gypsum wallboard ceiling finish. Single-Layer Floor Systems with I-Joists or Trusses: Minimum 23/32" Tongue & Groove APA Sturd-I-Floor, Two Layers 1/2" Type X Gypsum Wallboard Taped, 3-Dimensional Detail Typical Details - DT-FR-21 This detail shows single-layer wood I-joist floor system with 23/32" T&G APA rated sheathing and two layers of 1/2" gypsum wallboard ceiling providing a fire-rated assembly. SIP Block Spline Typical Details - DT-SIP-5 This detail shows a wall-to-wall vertical SIP connection using a block spline and specifies nail size, nail spacing, use of sealant, and an 1/8” expansion gap. SIP Dimensional Lumber Spline Typical Details - DT-SIP-6 This detail shows a wall-to-wall vertical SIP connection using a dimensional lumber spline and specifies nail size, nail spacing, use of sealant, and an 1/8” expansion gap. SIP Eave Detail A Typical Details - DT-SIP-7 This detail outlines the construction of an eave using a SIP, highlighting proper flashing, sealant, and roofing materials. SIP Foundation Detail C Typical Details - DT-SIP-8 This detail shows a SIP wall assembly being attached to a floor system bearing on a concrete/CMU foundation wall, highlighting proper assembly of wall, floor, and foundation. Sized for Spacing Technical Topic - TT-055 This publication discusses the SIZED FOR SPACING notation in the APA trademark stamp and the option of trimming panels slightly to encourage proper panel spacing Slab-On-Grade Foundation Typical Details - DT-BB-7 This detail shows slab-on-grade foundation detail of moisture control layers. Slant Nailing Technical Topic - TT-058 This publication discusses the practice of driving nails at a slight angle in shear walls and diaphragms, and the difference between slant nailing and toe-nailing. Soft Structural Panels Customer Service Tip - W501 This publication explains why wood structural panels sometimes feel soft or springy. Staining of Concrete Poured Against Plyform Technical Topic - TT-059 This publication discusses the causes of concrete staining and provides some possible solutions Storage and Handling of APA Trademarked Panels Builder Tip - U450 This publication provides guidelines to help protect panels from damage in storage, during shipment and on the jobsite Strap Connection at Force Transfer Around Openings Shear Walls Typical Details - DT-FTO-2 This detail shows the blocking requirement for the metal strap at the exterior or interior of a force transfer around the opening shear wall. Structural Insulated Panels Product Guide - H650 This publication covers SIP advantages, applications, design and construction considerations, connection details, assembly and related topics. Stucco (Over Self-Furring Metal Lath), APA Rated Sheathing Exposure 1 Plywood or OSB Typical Details - DT-FR-22 This detail shows a fire-rated wall assembly of stucco over self-furring metal lath with APA rated sheathing, optional insulation, gypsum wallboard, and wood studs. Stucco Over APA Panel Sheathing Typical Details - DT-EWG-34 Stucco cladding assembly applied over APA Rated wood structural panel sheathing with two layers of weather-resistive barrier, self-furring metal lath, and metal bead. Subfloor Preparation to Receive Finish Flooring Technical Guides - V440 This publication provides guidelines on installing wood structural panel subfloors for optimal performance of finished floors. Sustainable Buildings, Sustainable Future Technical Guides - F305 Describes the environmental benefits of engineered wood, compares wood to other structural products and explains scientific research that demonstrates woods green building merits. Systèmes de murs en bois d’ingénierie Technical Guides - R311CAF Aperçu des systèmes de murs couramment utilisés et de la manière dont les panneaux structuraux en bois peuvent satisfaire aux exigences fondamentales dans les applications murales. Temporary Construction Loads Over I-Joist Roofs and Floors Technical Note - J735 Provides recommendations for properly placing heavy loads in a partially completed light-framed structure to prevent damage to the structure and/or injury to the work crew Temporary Expansion Joints for Large Buildings Technical Note - U425 This publication discusses expansion joint details for buildings with dimensions larger than 80 feet Termite Protection for Wood-Framed Construction Technical Note - K830 This publication discusses the types of termites found in the U.S. and proven construction techniques and treatment methods to protect wood-frames buildings from termite damage. Texas Straight-Line Wind Damage Assessment Report 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 Texas Tornado Damage Assessment Report Damage Assessment Report - SP-1177 This publication contains damage assessments from the December 2015 tornado storm near Dallas, TX, including wind-resistant construction recommendations The Importance of Code-Compliant Concrete Formwork Technical Guides - A236 This publication describes the importance of adhering to PS 1 plywood specifications to meet the material performance criteria outlined in ACI 318 & ACI 347, as mandated by the IBC The Performance Path to Energy Code Compliance Technical Guides - R505 This publication explains how to use a performance path to meet International Energy Conservation Code (IECC) requirements while balancing cost and structural requirements. Two-Hour Load-Bearing Interior or Exterior Wall System Typical Details - DT-FR-23 This detail shows two-hour fire-rated load-bearing interior or exterior wall assembly with 2x6 wood studs, mineral wool insulation, and Type X gypsum wallboard on both sides. Two-Sided Wood Structural Panel Box Header Typical Details - DT-AF-9 This detail shows a two-sided box header built using wood structural panels on both sides of the wall in lieu of conventional headers to increase cavity insulation space. Two-Stud Corner – Outside Corner View Typical Details - DT-AF-14 This detail shows a plan view of a two-stud corner framing assembly with 2x ladder blocking spaced vertically at 24 inches on center to provide interior drywall backing. Two-Stud Corner with Drywall Clips Typical Details - DT-AF-15 This detail shows a two-stud outside corner framing assembly using drywall clips to secure interior drywall without requiring a third corner stud. Two-Stud Inside Corner for Wall Panelization Typical Details - DT-AF-16 This detail shows a two-stud inside corner framing assembly with a panelized/prefabricated wall system. Typical Connections to Engineered Flat Roof Members Typical Details - DT-EWG-35 This detail shows four connection methods for flat roof systems: to wood I-joists, open-web parallel-chord wood trusses, steel bar joists with wood nailer and glulam beams. Typical Panel-To-Metal Framing Systems Typical Details - DT-EWG-36 This detail shows 4 methods for attaching APA panel deck to metal framing systems including nailable steel joists, nailer-anchored, and direct-to-formed steel joist configurations. UL Class 90 (NM519) Typical Details - DT-WWR-1 This detail shows a UL Class 90 rated roof assembly using two-ply asphalt glass fiber mat over plywood deck with Douglas-fir or Southern pine framing. UL Class 90 (NM520) Typical Details - DT-WWR-2 This detail shows a wind-resistive roof assembly with hot-mopped built-up roofing over APA-rated plywood sheathing and structural framing, rated U.L. Class 90. Unevenness of Edges in Wood Structural Panels and Thin Underlayment Customer Service Tip - C501 This publication discusses the causes of fungal decay in wood structural panels and how proper design, construction and maintenance can prevent fungal decay. Vertical Inside and Outside Corner Joints Typical Details - DT-EWG-37 This detail shows vertical corner joint configurations for APA panel and lap siding — butt and caulk, corner board lap joints, and lap siding corners — in horizontal section view. Vertical Wall Joints Typical Details - DT-EWG-38 This detail shows four vertical joint configurations for APA panel siding butt, shiplap, reverse board and batten, T1-11 and channel groove, and vertical batten. 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. Wall Penetration with Flashing Typical Details - DT-BB-8 This detail shows two-piece flashing installation at wall penetration.