Technical Document Library

Proper Installation of APA Rated Sheathing for Roof Applications Builder Tip - N335 This publication provides step-by-step instructions for roof sheathing installation Build a Better Home: Moisture-Resistant Roof Construction Technical Guides - A535 This publication describes several roof design and weatherproofing methods used to keep water out of a home’s interior. 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 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. 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 Roof Construction (Canada) Construction Guide - R305 This publication provides specification recommendations for plywood and OSB roof systems and installation recommendations for panel roofs 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 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. Wall to Roof Flashing—Stucco Typical Details - DT-BB-12 This detail shows wall-to-roof flashing detail at stucco-clad wall. 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 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 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. 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 I-Joist Roof Framing Details Technical Guides - D710 This publication includes recommended construction details for I-joists in roof applications. 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. 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. 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. 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. 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. Wood Structural Panel Heavy Timber Roof Construction, 2-Dimensional Detail Typical Details - DT-FR-24 This detail shows a heavy timber roof assembly with wood structural panels, featuring heavy timber or glulam beams supporting tongue-and-groove wood decking with built-up roofing. 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. 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 Wind Rated Roofs: UL Class 90 (NMS520) Typical Details - DT-WRR-2 This detail shows wood roof assembly with plywood decking over purlins/trusses with two-ply asphalt glass fiber mat roofing system, rated UL Class 90 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) 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 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 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. 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 Sheathing Reinforcement for Cantilevered I-Joist for Vertical Building Offset One Side Typical Details - DT-IJ-11 This detail shows installation of a sheathing reinforcement on cantilevered I-joists at a vertical building offset and specifies a reinforcement for one side of the I-joist. Sheathing Reinforcement for Cantilevered I-Joist for Vertical Building Offset Two Sides Typical Details - DT-IJ-12 This detail shows installation of a sheathing reinforcement on cantilevered I-joists at a vertical building offset and specifies reinforcement for two sides of the I-joist. 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. 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. 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. 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 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 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. 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. 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 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. Wind Rated Roofs: UL Class 90 (NMS519) Typical Details - DT-WRR-1 This detail shows UL Class 90 rated roof assembly with two-ply asphalt glass fiber mat hot-mopped over plywood sheathing on wood framing with rayon tape. 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 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. 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 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 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. 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. 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. Glued Laminated Beam Design Tables Technical Guides - S475 This publication provides recommended design load tables for glulam beam roof and floor applications 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. 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 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. 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 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. 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. APA PRI-405 Performance Standard for Commercial I-Joists Standards - PRI-405 This standard contains performance criteria, qualification requirements & quality assurance information for APA Performance Rated I-joists in commercial roof/floor construction. 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 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. 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. 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. 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). Wood Structural Panel Overlap Typical Details - DT-AF-18 This detail shows proper wood structural panel sheathing overlap connections for two raised-heel truss configurations. 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 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. 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. 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. 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) 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. 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 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. 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 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 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. Installation of APA Plywood Underlayment Typical Details - DT-EWG-24 This detail shows APA plywood underlayment installation over APA Rated sheathing subfloor. 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. 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. 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. 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 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 I-Joist Blocking Panel Typical Details - DT-IJ-5 This detail shows the installation of PRI blocking panels between I-joists, attached to top plate with face nails for shear transfer at floor sheathing boundaries. 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. 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. 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. 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. 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. 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. 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. 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. 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, 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. 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. Advanced Framing Construction Guide - M400 This publication explains the components of advanced framing in floor and wall framing, including illustrated construction details 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 Construction Practices for Wood I-Joist Floor Vibration Retrofit Data File - D720 This publication identifies the causes of and remedies for excessive floor vibration. Temporary Expansion Joints for Large Buildings Technical Note - U425 This publication discusses expansion joint details for buildings with dimensions larger than 80 feet 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 Performance Rated Panels Product Guide - F405 This product guide describes performance standards, applications, trademark and performance category information for APA Performance Rated Panels 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. 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 Engineered Wood Construction Guide Technical Guides - E30 This publication provides a comprehensive overview of engineered wood construction systems for residential, commercial and industrial buildings 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 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. 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 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. Panels for Soffit Applications Builder Tip - N330 This publication discusses recommended panels and spans for open and closed soffits. 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. 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 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. 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 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 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. 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." Build A Better Home: Moisture-Resistant Foundation Construction Technical Guides - 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. 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 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 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. 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 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. 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). 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 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. 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 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 Energy-Conserving Wall Assemblies Typical Details - DT-EWG-16 This detail shows two energy-conserving exterior wall assemblies. 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 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-N139 LP OSB:
LP NovaCore® Thermal Insulated Sheathing 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 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. 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 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 Foundation Flashing—Stucco Typical Details - DT-BB-10 This detail shows wall-to-foundation flashing detail at stucco-clad wall. Window Opening Detail—Brick Veneer Typical Details - DT-BB-16 This detail shows window head and sill detail at brick veneer. Window Opening Detail—Stucco Typical Details - DT-BB-17 This detail shows window head and sill flashing detail with stucco cladding. 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 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 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-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-N137 RoyOMartin OSB:
RoyOMartin WINDBRACE OSB Sheathing for Combined Shear and Wind Uplift APA Product Reports - PR-N217 Plywood, OSB:
Performance Standards and Qualification Policy for Wood Structural Panels and Performance Standard for 303 Siding Build a Better Home: Controlling Mold and Mildew Technical Guides - 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. Glulam Beam Camber Technical Note - S550 This publication discusses how camber reduces the adverse effects of beam deflection 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