Technical Document Library

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: 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: 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: Proper Storage and Handling of Glulam Beams Builder Tip - R540 This publication provides recommendations for storage and handling of glulam beams. 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: 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. Builder Tips: Keep Glulam Looking Its Best with Proper Storage and Handling Builder Tip - F455 This publication describes best practices for storage and installation of glued laminated timber (glulam). 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 APA Performance Rated I-Joists Storage, Handling & Safety Recommendations Builder Tip - Z735 This publication includes important tips for storage, handling and jobsite use of APA Performance Rated I-Joists. 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 Finishing APA Rated Siding Builder Tip - Q350 This publication describes recommended finishes and application recommendations for 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. Panels for Soffit Applications Builder Tip - N330 This publication discusses recommended panels and spans for open and closed soffits. Proper Installation of APA Rated Sheathing for Roof Applications Builder Tip - N335 This publication provides step-by-step instructions for roof sheathing installation 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." 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. 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. 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. 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. Ridging in Single Layer Floor Panels Customer Service Tip - W503 This publication discusses the causes, prevention and remedial treatment for floor sheathing ridging. Soft Structural Panels Customer Service Tip - W501 This publication explains why wood structural panels sometimes feel soft or springy. 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. 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. Preservative Treatment of Glued Laminated Timber Technical Note - S580 This publication provides a summary of preservatives, treatment recommendations, use, handling and finishing tips for preservative-treated glulam beams 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. 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 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. APA Simple Solutions: LVL Beams & Headers Technical Guides - S700 This publication discusses the benefits of using laminated veneer lumber (LVL) beams and headers for window and door framing applications 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 Luxury Boulder Residence Case Studies - R135 This case study discusses how glulam beams reduced costs and streamlined installation on a 5,200 square foot custom Colorado home. 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. A Guide to the 2015 IRC Wood Wall Bracing Provisions Technical Guides - A Guide to the 2015 IRC Wood Wall Bracing Provisions Structural Insulated Panels Product Guide - H650 This publication covers SIP advantages, applications, design and construction considerations, connection details, assembly and related topics. 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) ANSI/APA PRS 610.1: Standard for Performance-Rated Structural Insulated Panels in Wall Applications Standards - ANSI/APA PRS 610.1-2023 This standard covers the manufacturing, qualification, quality assurance, design and installation requirements for performance-rated structural insulated panels used in walls Wall to Foundation Flashing at Brick Ledge Typical Details - DT-BB-9 This detail shows wall-to-foundation connection at brick veneer of base flashing. Wall to Roof Flashing—Brick Veneer Typical Details - DT-BB-11 This detail shows wall-to-roof flashing detail at brick veneer roof intersection. 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 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. 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 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. Wood Structural Panel Shear Wall Deflection Formula Technical Topic - TT-053 This publication discusses components of shear-wall deflection and includes formulas for calculating deflection of shear walls Construction Practices for Wood I-Joist Floor Vibration Retrofit Data File - D720 This publication identifies the causes of and remedies for excessive floor vibration. 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 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. 4 Best Practices for Glulam Installation Technical Guides - Q705 This publication provides simple steps to proper installation that ensures glulam beams perform as designed. 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 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 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. Nail Spacing Recommendations for APA EWS Rim Boards and I-joists Technical Topic - TT-094 This publication provides tables of the minimum recommended nail spacing for APA EWS Rim Boards and I-joists. Nailed Box Beam Design Example Technical Topic - TT-116 This publication describes box beam design using engineering mechanics. Santa Maria Water Reservoir Cover Case Studies - C115 This case study discusses how a glulam roof structure provided decay resistance, seismic performance and cost savings for a municipal water reservoir in California. 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 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 Sprinkler Pipe Installation Design Details (Supplement to J745) Technical Note - J745_SUP This publication is a supplement to Technical Note: Sprinkler Pipe Installation for APA Performance Rated I-Joists, Form J745, with sprinkler pipe installation design details. Staining of Concrete Poured Against Plyform Technical Topic - TT-059 This publication discusses the causes of concrete staining and provides some possible solutions 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. Wood Structural Panel Sizes Technical Topic - TT-114 This publication provides APA’s position on wood structural panel sizes concerning panel size listings in ICC-ES ESR-2586. 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. Fire Protective Options for I-Joist Floor Systems Construction Guide - R425 Describes several options that satisfy fire-protection provisions of the 2012, 2015 and 2018 IRC related to I-joist floor systems, including construction details 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 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 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 Engineered Wood Construction Guide: Cross-Laminated Timber (CLT) Selection and Specification Excerpt - E30X-CLT This publication is an excerpt from the APA Engineered Wood Construction Guide, focusing on selecting and specifying cross-laminated timber for various building applications Engineered Wood Construction Guide: Glulam Selection and Specification Excerpt - E30X-GL This publication is an excerpt from the APA Engineered Wood Construction Guide, providing a description and specification recommendations for glued laminated timber (glulam) Engineered Wood Construction Guide: Rim Board Selection and Specification Excerpt - E30X-RB This publication is an excerpt from the APA Engineered Wood Construction Guide, providing guidance on selecting and specifying rim board Exemption of Special Inspection on Glulam Based on the 2019 California Building Code Technical Topic - TT-108 This publication clarifies the intent of the California Building Code exemption for special inspection on glulam outlined in Section 1705.5.4 Field Notching and Drilling of Laminated Veneer Lumber Technical Note - G535 This publication provides guidance for notching and drilling on LVL when the end notching and drilling of horizontal through-thickness holes cannot be avoided. Finishing Glued Laminated Timbers Technical Topic - TT-033 This publication discusses recommendations and exceptions for finishing glulam manufactured entirely from solid-sawn lumber. Glulam Beam Camber Technical Note - S550 This publication discusses how camber reduces the adverse effects of beam deflection Glulam Garage Door Headers Offer Design Options Technical Guides - C410 This publication provides connection details and installation recommendations for glulam in residential garage door framing. Glulam Product Guide Product Guide - X440 This product guide provides an overview of APA trademarked glulam and discusses design considerations, applications and specification Mass Timber Has Banks Seeing Green Case Studies - V135 This case study discusses how CLT and glulam helped First United Bank achieve construction and energy efficiencies. Minimizing Floor Vibration by Design and Retrofit Technical Note - E710 This publication covers vibration perception, fundamental natural frequency, criteria for floor vibration control and guidelines to remedy existing floor vibration problems. 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. 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 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 North Office Buildings Case Studies - S120 This publication discusses how glulam framing and engineered wood helped Portland’s One North development achieve energy efficiency and sustainability. 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 Performance-Rated I-Joist Roof Framing Details Technical Guides - D710 This publication includes recommended construction details for I-joists in roof applications. 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 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 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 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. 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 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. Suggested Blocking Details for Starter Joists of Engineered Wood Rim Board® Technical Topic - TT-078 This publication provides suggested I-joist blocking details, which may be used when local codes require prescriptive blocking in the space adjacent to starter joists or rim board. Temporary Expansion Joints for Large Buildings Technical Note - U425 This publication discusses expansion joint details for buildings with dimensions larger than 80 feet 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 Wood I-Joists and APA Performance Rated Rim Boards Technical Topic - TT-022 This publication discusses the structural superiority of using APA Performance Rated Rim Boards with prefabricated wood I-joists rather than sawn lumber rim boards. Wood Moisture Content and the Importance of Drying in Wood Building Systems Technical Topic - TT-111 This publication provides guidance on how to avoid potential moisture problems when using wood structural products with impermeable materials Wood Structural Panel Sheathing on Hip Roofs Technical Topic - TT-083 This publication provides installation guidelines for hip-roof panel applications on trusses spaced 24 in. o.c. that address serviceability issues and improve performance 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 APA System Report 405: Fire Protection of Floors Constructed with Prefabricated Wood I-Joists for Compliance with the International Residential Code 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 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. Appleton Mills Case Studies - R145 This case study discusses how glulam beams, planks, girders and columns were used to structurally and aesthetically restore the historic Appleton Mills complex in Lowell, MA. 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. 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: Controlling Mold and Mildew Build A Better Home - A525 This publication outlines the characteristics of mold and mildew, the effect they can have on a structure and its inhabitants, and provides methods for prohibiting their growth. 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 a Better Home: Moisture-Resistant Wall Construction Build A Better Home - A530 This publication describes the primary sources of moisture intrusion in wood wall construction and recommends methods to prevent moisture penetration. 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. 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. 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 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 Cross-Laminated Timber—North American CLT vs. Imported Product 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 Data File: APA Rim Board in Fire Rated Assemblies Data File - D350 This publication provides recommendations for the use of APA rim board in conjunction with fire-rated wall/floor assemblies, based on the US Forest Product Laboratory testing 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 Large Diameter Horizontal Holes on the Bending and Shear Properties of Laminated Veneer Lumber (LVL) Technical Note - V900 This publication supplements APA Form G535, providing an analytical tool in situations when horizontal holes in LVL exceeding the prescriptive guidance in APA G535 are necessary Engineered Wood Construction Guide: I-Joist Selection and Specification Excerpt - E30X-IJ This publication is an excerpt from the APA Engineered Wood Construction Guide, providing a description and specification recommendations for I-joist 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: Structural Composite Lumber (SCL) Selection and Specification Excerpt - E30X-SCL This publication is an excerpt from the APA Engineered Wood Construction Guide, providing descriptions and specification recommendations for structural composite lumber (SCL) 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 Evaluation of Check Size in Glued Laminated Timber Beams Technical Note - R475 This publication discusses checking in glulam beams and includes a flowchart and equations for determining allowable check size 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 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. Field Notching and Drilling of Glued Laminated Timber Beams Technical Note - S560 This publication provides guidance for notching and drilling on glulam when the end notching and drilling of horizontal though-thickness holes cannot be avoided Field Repairs of Plywood Technical Note - J805 This publication describes methods for field restoration of plywood to near its original condition and appearance 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 Structural Glued Laminated Timber Technical Topic - TT-127 This publication provides a summary of results of an APA/USDA Forest Product Laboratory pilot test program examining structural properties of Fire-Retardant Treated glulam. First Tech Federal Credit Union Case Studies - U115 This case study discusses how CLT panels and glulam framing delivered cost savings, a faster schedule and sustainability benefits for First Tech Federal Credit Union. 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 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 Glulam Appearance Classifications for Construction Applications Technical Note - Y110 This publication clarifies the distinction between appearance considerations and structural properties of glulam timbers and appearance classifications of glulam members. Glulam Connection Details Construction Guide - T300 This publication shows correct connections and common connection errors involving glued laminated (glulam) timbers Glulam in Residential Building Construction Guide Technical Guides - X450 Describes the selection, specification, design considerations and allowable load tables for APA-trademarked glulam used in residential headers, floor beams and roof beams. Holes in Structural Glued Laminated Timber (Glulam) Rim Board in Light-Frame Wood Construction Technical Topic - TT-135 Provides recommendations for hole size and segment length for glulam rim board for situations where holes are not specified in the construction documents or shop drawings. 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 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 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 Jackson Hole Airport Case Studies - R110 This case study explains how glulam beams and Douglas-fir columns helped the Jackson Hole Airport meet strict height limits and seismic demands. LeMay America's Car Museum Case Studies - N115 This case study discusses how curved glulam beams enabled dramatic design, seismic resilience and cost effectiveness for the LeMay Car Museum in Tacoma, Washington. Lone Survivor House Case Studies - R115 This case study discusses how glulam beams solved complex structural challenges on a pentagon-shaped coastal house. 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. 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 Multiple Small-Diameter Holes for Electrical Cables Technical Topic - TT-132 Recommendations for cutting holes in I-joists, LVL and glulam for electrical cables in compliance with the National Electric Code (NEC) and International Residential Code (IRC) 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 Owner's Guide to Understanding Checks in Glued Laminated Timber Technical Guides - F450 This publication addresses common concerns related to checking in glulam and explains how to evaluate if the check effects the glulam’s strength 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 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 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 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 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 Preservative Treatment for Structural Glued Laminated Timber Technical Topic - TT-092 This publication describes revisions of the 2016 American Wood Protection Association (AWPA) U1 standard that are related to structural glued laminated timber (glulam) 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 Storage and Handling of I-Joists and LVL Technical Note - E705 This publication provides recommendations for safe handling and storage of I-joists and LVL, as well as best practices for cut-up at distribution and moisture effects. Residential Garage Door Installation Details with Prefabricated Wood I-Joists Technical Topic - TT-130 This publication provides a method for garage door installation with back-hangs that are attached to the bottom flange of residential I-joists with lag screws. Roof Construction (Canada) Construction Guide - R305 This publication provides specification recommendations for plywood and OSB roof systems and installation recommendations for panel roofs 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. Small Cracks in the Flange at Ends of I-Joists Technical Topic - TT-026 This publication discusses the effect of small cracks radiating from corners of the flange groove on I-joist structural capabilities Special Consideration for Designing Radiant Heat Systems Over Wood I-Joist Floors Technical Topic - TT-113 This publication addresses how to prevent adverse effects on wood I-joist floor framing from improperly designed, installed or operated underfloor heat systems 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. 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 Water Vapor Permeance of Wood Structural Panels and Wood Wall Construction Technical Note - J450 This publication addresses the water vapor permeance of wood structural panels and vapor retarders and their role in wall-system design Wind Resistance of Wood Structural Panel Sheathed Walls Technical Topic - TT-110 This publication discusses wind resistance of light-framed walls sheathed with plywood or OSB using the methodology of the 2012 IBC Table 2304.6.1 and the 2012 IRC Table R602.3(3) Wind-Rated Roofs: Designing Commercial Roofs to Withstand Wind Uplift Forces Technical Guides - G310 This publication presents tested assembly details for roof systems with APA wood structural panels used as substrate that meet classifications of FM approval or UL. Wood Structural Panel Identification Technical Topic - TT-013 This publication answers commonly asked questions about identification marks found on wood structural panels Wood Structural Panels Over Metal Framing Technical Guides - T625 This publication provides design and fastening recommendations for installation of wood structural panels over metal framing in floors, walls and roofs. Wood Structural Panels Used as Nailable Sheathing Technical Topic - TT-109 This publication discusses how wood structural panels can withstand earthquake, wind, wind suction and pressure loads while permitting the anchorage of lightweight siding materials 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 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 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. Advanced Framing Construction Guide - M400 This publication explains the components of advanced framing in floor and wall framing, including illustrated construction details 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 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 Rim Boards Technical Guides - W345 This publication details connection requirements and application notes for APA Performance Rated Rim Board 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 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). 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. Balcony Design for I-Joist Floor with Lumber Cantilever Technical Topic - TT-125 This publication provides guidance on construction of balconies with solid-sawn dimension lumber attached to I-joist floor systems in supplement to Figure 4 of APA form Z725 Brelsford WSU Visitor Center Case Studies - R130 This case study discusses the Brelsford WSU visitor center’s use of several engineered wood products, including CLT and glulam. Build a Better Home: Moisture-Resistant Roof Construction Build A Better Home - A535 This publication describes several roof design and weatherproofing methods used to keep water out of a home’s interior. 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 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 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. Effect of Large Diameter Horizontal Holes on the Bending and Shear Properties of Structural Glued Laminated Timber (Glulam) Technical Note - V700 This publication is a supplement to APA S560, providing an analytical tool in situations when horizontal holes exceeding the prescriptive guidance in APA S560 are necessary 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 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 Products Help Navigate Design Challenges and Tariffs for North Carolina Senior Living Project 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. 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. 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. Glulam Floor Beams Technical Guides - C415 This publication contains span tables for glulam floor beams in residential construction, tables for substituting glulam for steel beams and design details. 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. 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 Holes in Blocking Used in Engineered Wood Construction Technical Topic - TT-040 This publication discusses the placement of holes in the webs of I-joists or rim board when used as blocking for lateral restraint of floor and roof joists 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. 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. 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. Moisture-Related Dimensional Stability Technical Topic - TT-028 This publication discusses linear expansion and thickness swell in wood structural panels due to moisture 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. Performance Rated I-Joists Design and Construction Guide Construction Guide - Z725 This publication discusses span ratings, installation details, cantilever designs, architectural specifications and engineering design properties for APA Performance Rated I-Joists 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. Sprinkler Pipe Installation for APA Performance Rated I-Joists Technical Note - J745 This publication provides guidance on attachment of steel and CPVC sprinkler systems to APA Performance Rated I-Joists. 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