Technical Document Library

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 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 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. Build a Better Home: Moisture-Resistant Wall Construction Technical Guides - A530 This publication describes the primary sources of moisture intrusion in wood wall construction and recommends methods to prevent moisture penetration. 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. 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. 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 Roof Construction (Canada) Construction Guide - R305 This publication provides specification recommendations for plywood and OSB roof systems and installation recommendations for panel roofs 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 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 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 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: 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 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: 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: 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: 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) 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 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. Advanced Framing Construction Guide - M400 This publication explains the components of advanced framing in floor and wall framing, including illustrated construction details 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. 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. 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. 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. 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 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. 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 Floor Squeaks: Causes, Solutions and Prevention Technical Note - C468 This publication discusses typical floor squeak causes and provides corrections and preventative measures. I-Joists Bearing on Floor Beam Typical Details - DT-GB-12 This detail shows I-joists bearing on a glulam floor beam with face nail connections and blocking not shown for clarity. Joists Mounted Flush with Floor Beam Typical Details - DT-GB-13 This detail shows two floor joist flush connections options: one face mounted hanger and one top mounted hanger. Lumber Joists Bearing on Floor Beams Typical Details - DT-GB-14 This detail shows a cross-section of sawn lumber floor joists secured by toe nails supported by a glulam beam. 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 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 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 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 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. Continuous Floor Beam Over Wood Support Typical Details - DT-GB-11 This detail shows two connection options for a continuous glulam floor beam bearing on a wood support. 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 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. Ridging in Single Layer Floor Panels Customer Service Tip - W503 This publication discusses the causes, prevention and remedial treatment for floor sheathing ridging. 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. Beam at End Wall with Floor Joist Flush with Beam Typical Details - DT-GB-2 This detail shows a glulam beam connection to an end wall with flush floor joists or I-joists connected to the beam. 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 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. 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 APA Rated Sturd-I-Floor (OSB) Specification Guide - SP-1101 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 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. 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. 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. 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. 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. 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. Glulam Connection Details Construction Guide - T300 This publication shows correct connections and common connection errors involving glued laminated (glulam) timbers Beam at End Wall with Floor Joist Over Beam Typical Details - DT-GB-3 This detail shows a glulam beam connection to an end wall with I-joists bearing on the beam. 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. 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 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. 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) 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. 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. 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 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. 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. 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" 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 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 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. 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. 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 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 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. I-Joist Cantilever Detail for Balconies Typical Details - DT-IJ-6 This detail outlines proper construction methods for cantilevered I-joist floor extensions, such as balconies. 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. 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. 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. 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. Glued Laminated Beam Design Tables Technical Guides - S475 This publication provides recommended design load tables for glulam beam roof and floor applications 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 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. I-Joist Fire Assembly with Mineral Wool Typical Details - DT-FPF-7 This detail shows an I-joist floor assembly with mineral wool insulation for fire protection per IRC Section R503. 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. I-Joist Fire Assembly with 0.5 inch Gypsum Board Above Flange Typical Details - DT-FPF-4 This detail shows an I-joist floor assembly with 1/2" gypsum board placed above the bottom flange for fire protection per IRC Section R503. I-Joist Fire Assembly with 5/8" inch Gypsum Board Above Flange Typical Details - DT-FPF-5 This detail shows an I-joist floor assembly with 5/8" gypsum board placed above the bottom flange for fire protection per IRC Section R503. I-Joist Fire Assembly with Gypsum Board Typical Details - DT-FPF-2 This detail shows 1/2" gypsum board fastened to the bottom flange of an I-joist floor assembly for fire protection per IRC Section R702.3.1. I-Joist Fire Assembly with Rockwool Safe'n'Sound Typical Details - DT-FPF-6 This detail shows an I-joist floor assembly with Rockwool Safe'n'Sound mineral wool insulation for fire protection per IRC Section R503. Continuous Beam Over Intermediate Steel Column Typical Details - DT-GB-10 This detail shows two options for connecting a continuous glulam floor beam to an intermediate steel column using either a steel post cap or steel 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 I-Joist Fire Assembly with Gypsum Board at Bottom Flange Typical Details - DT-FPF-1 This detail shows 1/2" gypsum board or 5/8" wood structural panel installed at the bottom flange of an I-joist floor assembly for fire protection per IRC Section R702.3. 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. 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. Sway Brace Blocking for Seismic Loads Perpendicular to the Joist 1 Typical Details - DT-SPR-16 This detail illustrates a seismic sway brace blocking configuration, showing the installation of perpendicular diagonal bracing for I-joist floor systems. Permitted Framing Alignment Offsets - Single Top Plates Typical Details - DT-AF-11 This detail shows permitted framing alignment for trusses, floor joists, rafters, and ceiling joists above (or below) studs when using a single top plate. 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. 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. PRI Blocking Typical Details - DT-IJ-8 This detail shows PRI blocking installation. It outlines where blocking is required, how to attach blocking and floor joists to a double top plate, and vertical load capacities. Rim Board Typical Details - DT-IJ-10 This detail shows the installation of APA rim board to floor joists and a double top plate, specifically noting vertical capacity and shear transfer nailing. 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. 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. PRI Rim Joist Typical Details - DT-IJ-9 This detail outlines the attachment of PRI (Performance Rated I-joist) rim to floor joists and a double top plate. It also includes bearing and vertical load transfer requirements. 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. 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. APA PRI-400 Performance Standard for Residential I-Joists Standards - PRI-400 This standard contains performance criteria, qualification requirements and quality assurance information for APA Performance Rated I-joists used in residential floors. 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. Temporary Expansion Joints for Large Buildings Technical Note - U425 This publication discusses expansion joint details for buildings with dimensions larger than 80 feet Performance-Rated I-Joist Roof Framing Details Technical Guides - D710 This publication includes recommended construction details for I-joists in roof applications. 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). Buckling of Wood-Based Panel Siding Technical Note - F410 This publication describes mechanism and construction features that contribute to siding buckling 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. 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. 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 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. 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. Structural Insulated Panels Product Guide - H650 This publication covers SIP advantages, applications, design and construction considerations, connection details, assembly and related topics. Lumber Cantilever Detail for Balconies Typical Details - DT-IJ-7 This detail outlines a construction method for balconies using cantilevered lumber extensions attached to I-joists at their back span. 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. 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 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. 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 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 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 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 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 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. 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 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 Main and Side Members Typical Details - DT-SPR-12 This detail shows fastener connection between main member (last member penetrated) and side member (first member penetrated) in wood construction. 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. APA PRI-400 Performance Standard for Residential I-Joists, Limit States Design for Canada Standards - PRI-400 CA This standard details performance criteria, qualification requirements and quality assurance for APA Performance Rated residential I-joists, limit states design, for use in Canada Solid Block Typical Details - DT-IJ-14 This detail shows solid vertical blocking in a floor cavity, next to an I-joist, to properly transfer load from above to bearing below. 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. APA Performance-Rated Rim Boards Technical Guides - W345 This publication details connection requirements and application notes for APA Performance Rated Rim Board 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. Beam at End Wall Bearing, Nailed Typical Details - DT-GB-1 This detail shows glulam beam bearing at an end wall. The beam is supported by trimmer studs and secured to the king stud with 16d nails. Bearing at End Wall, Steel Tie Plate Typical Details - DT-GB-9 This detail shows a steel tie plate connection for a glulam beam bearing on a wood support at an end condition. 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. Beams Butting Over Wood Support Typical Details - DT-GB-6 This detail shows two glulam beams butting over a wood support, with the beams connected to the support using a steel post cap and through-bolts. Bearing at End Wall, Steel Post Cap Typical Details - DT-GB-8 This detail shows connection of glulam beam bearing on solid-sawn post or glulam column using steel post cap at end wall condition. 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. 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