Structural 2 plywood Structural hardwood plywood board, measuring 2440mm x 1220mm (8' x 4') with an 18mm thickness. S Department of Commerce Voluntary Product Standard PS 2, “Performance Standard for Wood-Based Structural-Use Panels. See full list on theplywood. Our 16 acre lumber yard in Los Angeles allows us to get your order built quickly. Codes recognize these two materials as the same. With ThermoPLY, the lightweight design allows you to work quickly while the high-strength cellulosic fiber boards provide durability, moisture resistance and a best-in-class air barrier for years to come. Oct 3, 2025 · Plywood is a type of engineered wood made from thin sheets of veneer. 2. Mar 26, 2025 · In the modern world of construction and interior design, selecting the right type of plywood can make all the difference. Find 4-ft x 8-ft plywood & sheathing at Lowe's today. Oct 16, 2009 · Since plywood is a structural material, one can include it in engineering computations. They resist bending or deflection, racking or shape distortion and impact damage. This plywood product generally receives positive reviews, with many customers describing it as good quality and a good value compared to similar options. Phone 9562 7181 email [hidden information] We have for sale DD plywood - Downgrade Non Structural - 2. Each panel is third-party certified for quality and is rated for Exposure 1 bond durability for 1/2 x 4 x 10 Rated Struct 1 Plywood Sheathing Item # 102399 | Model # LBR102399 0 Get Pricing & Availability PS 2 was the result of a joint U. Approved for single-sided installation. The manufacturing process of Mar 19, 2025 · Structural plywood stands as a cornerstone for projects demanding strength, reliability, and stability, providing the backbone for many modern structures. Ideal for weather-protected roofs and Plywood manufacturer tells the truth of all types of plywood . In this article, we'll explore the key distinctions between structural and non-structural plywood, helping you Oct 1, 2025 · Use 6d or 8d nails for 1/2 plywood sheathing. (Please refer to our specification page for further information on glue bond and service classes within the harmonised standard EN 13896). Plywood Specifications Tool APA › Products & Trademarks › Plwood Specification Tool How to use: The plywood specification tool takes the hard work out of finding the technical information for 30 different grades. 2) Structural Plywood Structural plywood gets used for building permanent structures that require high strength. The following load-span tables apply to APA trademarked structural-use panels qualified and manufactured in accor dance with APA PRP-108, Performance Standards and Qualification Policy for Structural-Use Panels, Form E445, Voluntary Product Standard PS 2-04, Performance Standard for Wood-Based Structural-Use Panels, Form S350 and Voluntary Product Standard PS 1-09, Structural Plywood, Form March 1998 Load-span tables for specific wood structural panel applications are included in several APA publications. Softwood Plywood As a leading producer of softwood plywood panels in North America, Roseburg manufactures a wide range of products for your building construction applications. Mar 1, 2024 · Plywood is a staple material in the construction and woodworking trades. Forest Plywood offers panels from a high grade paintable panel to a rough, industrial and structural construction grade. This Specification defines the practice to be followed in structural design of buildings and related structures with plywood when used in conventional, mechanically fastened applications, and in glued structural assemblies. Plywood is known for its versatility, strength, and cost-effectiveness, making it a popular choice for various projects. 3) Marine Plywood Another type of plywood is marine plywood. Charts have weights per standard sheet and per square foot. 4 Exterior A bond classification for structural plywood suitable for repeated wetting and redrying or long-term exposure to weather or other conditions of similar severity. Voluntary Product Stan-dard PS 1–07 for construction and industrial plywood (NIST 2007) and Performance Standard PS 2–04 for wood-based structural-use panels (NIST 2004) spell out the ground rules for manufacturing plywood and establishing plywood or OSB properties, respectively. Plywood as a structural material consists of an odd number of layers (plies). It 1. It is widely used in construction and woodworking projects due to its strength and versatility. S. May 21, 2024 · When it comes to plywood, there are two main categories that serve different purposes in construction and woodworking: structural plywood and non-structural plywood. 1 day ago · Understand the structural role of 5/8 T&G plywood and the critical installation steps for rigid, deflection-free subfloors. Non-Structural Plywood to understand their differences, strengths, and best uses for construction, furniture, and interiors. Pro Tip: For a polished look, use non-structural plywood with pre-laminated or veneered finishes—it reduces finishing time and improves overall aesthetics. Mar 4, 2024 · Voluntary Product Standard: Developed by the plywood industry and U. Shop plywood & sheathing and a variety of building supplies products online at Lowes. Plywood is the central component in an assembly consisting of bolts, plywood, and shear transfer ties which together form a shear wall. Exterior grade plywood is generally made from fully weather-resistant adhesive. What is suitable for construction, woodworking and furniture. It is an engineered wood from the family of manufactured boards, which include plywood, medium-density fibreboard (MDF), oriented strand board (OSB), and particle board (or chipboard). Bond classification of the panel does not relate to physical (erosion, ultraviolet, etc) or biological (mold, fungal decay, insect, etc) resistance of the panel. Nov 14, 2024 · Plywood can be used for furniture-making, deck-building, and more. Nominal panel thickness (Table B) assists in calculation of geometric cross-sectional properties. Find 4-ft x 10-ft plywood & sheathing at Lowe's today. The better the grade, the nicer the surface. Nail Specifications 1. It covers sheathing and single-floor grades only, and includes performance criteria, qualification requirements and test methods. Please select one of the grades listed below to learn more, or select "mill capabilities" to learn more about our mill in Kalispell, Montana. 2. Oct 8, 2024 · Experts compare OSB vs plywood. com Plywood Roof Design Example Calculations Using ASD 4x8 foot, 32/16, 4-ply, TECO SHEATHING SPAN® plywood panels are installed as roof sheathing over roof trusses (nominal 2 inch wide) spaced at 32 inches on-center. APA Panel Roof Sheathing Roof construction details using APA wood structural panels are illustrated in Figure 21. So, if you’re wondering what plywood thickness is best for your project, we’re here to help. Common Plywood Applications APA-trademarked plywood is suitable for a variety of end uses including subflooring, single-layer flooring, wall and roof sheathing, sheathing ceiling/deck, structural insulated panels, marine applications, siding, webs of wood I-joists, concrete forming, pallets, industrial containers, mezzanine decks, and furniture. Panels designated Structural I must meet all of the manufacturing and performance standards of Rated Sheathing, as well as certain additional requirements. Does CDX plywood meet the requirements of PS1 or PS2 . Strength & Stiffness Plywood and OSB structural panels possess inherent strength and stiffness. A WORD ON COMPONENTS Plywood-lumber (dimension lumber or structural composite lumber, SCL) components are primary structural members which depend on the glued joints to integrate the separate pieces into an efficient unit capable of carrying the design loads. 7 metre lengths, which can be supplied nail plated together into continuous lengths. The applicable section properties (Table C) can be divided into load capacity to determine design strength and stiffness. Performance category Feb 14, 2024 · Which plywood is best for your project? Learn about the plywood types, grades and more. We stock a wide range of Plywood, including CDX, Radiant Barrier, Pressure Treated, Fire-retardant, Doug Fir saw textured siding, Hardwood and Marine Grade. Structural strength for framing of wall, floor, and roof construction Roseburg’s Sheathing panels are especially designed for engineered applications such as structural components where design properties including tension, compression, shear, cross-panel flexural properties and nail holding and bearing are of significant importance. It's great for tables, workbenches, furniture, and more. Durable panels for your next build at Lowe's. Minimum Number of Plies in Plywood As shown in the table, the minimum number of plies in plywood is 3 plies. How to choose the right plywood type ? What's the advantage of different kinds of plywood? This plywood load capacity calculator is a vital tool for engineers, architects, and DIY enthusiasts to determine the maximum weight a plywood sheet can safely support. Plytanium® Plywood Rated Sheathing provides outstanding performance, durability and impact resistance for walls and roofs. Sep 19, 2024 · What is plywood? Plywood is an engineered wood product that bonds thin layers of wood veneers. You need to know if a 3/4-inch plywood sheet spanning 48 inches can hold the weight of your holiday decorations. Shop pressure treated lumber, hardwood lumber, softwood and a variety of lumber online at Lowes. com. Learn more here. It contains key information about the many structural wood panel grades produced by APA member mills, including APA Performance Rated Panels, sanded plywood, and specialty grades. As a high-performance engineered wood product, plywood is utilized in a variety of applications within the construction industry. 2 This Standard covers the wood species, veneer grading, adhesive bonds, panel construction and workman-ship, dimensions and tolerances, marking, moisture content, and packaging of structural plywood intended for construction and industrial uses. The comparable standard in Canada is CSA O325, Construction Sheathing. PS 1—Voluntary Product Standard PS 1 Structural Plywood PS 2—Voluntary Product Standard PS 2 Performance Standard for Wood‐Based Structural‐Use Panels Qualification Policy—APA policy that describes the procedures by which a mill may obtain trademarking privileges for performance-rated products. Includes load capacities, formulas, and span considerations. PS 2, Performance Standard for Wood-Based Structural-Use Panels, establishes requirements for structural wood-based panels such as oriented strand board (OSB), waferboard and certain types of plywood. When you’re sheathing a building you want the job done right. Compare ACX, CDX, OSB, Marine & Birch to find the best sheet for your project and budget. Find what you're looking from our collection of Stuctural Plywood at DunnLumber. When you need structural plywood sheathing and you get it mixed up with non-structural, you will have potentially catastrophic consequences. Model building codes typically use the phrase “wood structural panel” to describe the use of plywood and osb. What is the strongest type of plywood? The strongest kinds of plywood include hardwood plywood, marine plywood, aircraft plywood, and structural plywood. But you also want it done fast. Load capacities, which are presented here for allowable stress design (ASD) (Table A), are applicable to plywood panels qualified in accordance with TECO test protocol. These plywood are suited for heavy-duty construction and structural purposes. 2 Product Description & Range) and the characteristic values may be used in conjunction with both NZS 3603 and AS 1720 for the design of timber components. The NDS Chapter 16 provisions apply to exposed timber members of sawn lumber, gluedlaminated - softwood timber Mar 24, 2012 · Chapter 23 of the IBC provides diaphragm values for sheathing for Structural I grade and DOC PS1 and PS2 grades. Structural hardwood plywood board, measuring 2440mm x 1220mm (8' x 4') with a 15mm thickness. Class 2 - For Exterior Use - Could have some knots and open splits which will require some filling - Easily cut to size using a handsaw or electric saw - Glue complies to EN 314-2 Class 2 - Strong yet relatively lightweight plywood suitable for many uses - Suitable for structural use - Can act as load-bearing construction and stiffening element - Can be used for: shuttering/hoarding and all Wood structural panel are structural panel products composed primarily of wood and meeting the requirements of the U. If the thickness of plywood increase 3mm, the No. This information applies only to products tested and audited under APA programs Aug 14, 2010 · For example, 3/8" plywood siding with 6" edge nailing has a unit shear capacity of 450 plf while 3/8" wood structural panels with 6" edge nailing has a shear capacity of 615 plf (8d nails for each). Is the plywood siding referring to particleboard? If I need the capacities for the wood structural panels, how do I specify it on my drawing? The logical and reliable alternative to general commercial Marine Plywood offering full classification and performance in all conditions, EN 636 Use Class 3, EN 314-2 Class 3 Exterior Glue. Oct 3, 2025 · Calculating the load capacity of plywood is crucial for architects, builders, and DIY enthusiasts to guarantee the structural integrity of construction and carpentry projects. of Plies in a Plywood 1. OSB vs Plywood for Walls OSB is popular for wall sheathing because it’s cheap, uniform and comes in large panels. Here's how to recognize the different grades and choose among them. When you’re building a storage loft in your garage. Oriented Strand Board (OSB) doesn't look as good, but the two are virtually equal in structural stability. Pressure treated plywood sheathing is ideal for exterior projects, offering resistance to rot, insects and moisture. 2 This Standard covers the wood species, veneer grading, adhesive bonds, panel construction and workmanship, dimensions and tolerances, marking, moisture content, and packaging of structural plywood intended for construction and industrial uses. Thicker plywood offers more stability and support, making it ideal for structural projects like subflooring and roofing ply. /Canadian effort to harmonize performance standards for wood-based structural-use panels such as structural-use plywood, oriented-strand board (OSB), and other composite materials. We offer a wide selection, ranging from structural plywood to treated plywood. Density, fibre stress, compressive strength and modulus of elasticity of clear wood, panel and structural timber products. Department of Commerce for structural plywood and shown as PS 1-19 Voluntary Product Standard: Marks performance criteria for specific construction applications for wood structural panels and shown as PS 2-18 8. Structural vs Non-Structural Plywood: Key Differences Here’s a side-by-side comparison to help you choose the The majority of Ecoply® Structural plywood is F8 grade (exceptions are identifed in section 1. Learn what determines plywood strength and plywood weight, how ply count affects durability, and tips to maximize load-bearing capacity for your projects. The plywood made of more plies is Wood structural panels include structural plywood, oriented strand board (OSB), other mat-formed panels, and composite panels. APA Rated Sturd-I-Floor glue bond durability classification is typically Exposure According to US Plywood Standard (APA PS1-95 Construction and Industrial Plywood), plywood can be classified into several grades, such as A-A, A-B, A-C, B-B, B-C, C-C , C-D . Length: For attaching 1/2-inch plywood to framing, use Mar 19, 2025 · Compare Structural Plywood vs. We also stock Sturd-I-Floor T&G, Oriented Strand Board Structural 1, OSB Radiant Barrier and Speciality Panels like Pegboard and Sound Board. For roof sheathing that stands the test of time, it’s tough to beat Plytanium® Plywood, only from Georgia-Pacific. Find lumber and wood composites at Lowe’s today. Plywood is typically manufactured in thicknesses from 1/8” to 1-1/4”, with some up to 2” in thickness. When looking for a reliable building material, plywood is an excellent option due to its strength and durability This plywood can be used for construction and a variety of other uses. Whether you’re a seasoned contractor or a passionate DIYer, understanding the difference between structural and non-structural plywood is essential. The structrual properties of plywood are primarily dependent on the number and thickness of the plies, the grade of the plies and the arrangement of the plies. Introducing Plytanium Pine Plywood Sheathing, engineered for high-impact resistance, durability, and reduced edge swell. Whether you’re building a dream home, revamping your interiors, or crafting furniture from scratch, understanding the difference between structural and non-structural plywood can save you from costly mistakes—and help you build smarter. 1/2" CDX Struc 1 Plywood: Buy online. Specifications–Sheathing Plytanium® plywood sheathing is ideal for residential and light commercial construction, and provides outstanding performance for walls and roofs. Structural LVL fabricated in a plywood press is available from some manufacturers, in 2. In this blog, we will explore the properties, grades and applications of structural plywood and also choose a high-quality plywood for your requirements. Plywood and oriented strand board (OSB) are two types of wood structural panels commonly used in resi-dential construction. The first letter refers to the grade of face veneers and the second letter refers to the grade of back veneers . It is commonly used in construction and furniture making due to its strength and durability. Information in this PLYWOOD DESIGN SPECIFICATION Supplement applies to untreated plywood made in accordance with the latest edition of Voluntary Product Standards PS 1-09, Structural Plywood, or PS 2-10, Performance Standard for Wood-Based Structural-Use Panels. When to Use Structural I Sheathing What is Structural I? Structural I, also referred to as “STRUC I,” may be OSB or plywood and is, essentially, a subcategory of APA Rated Sheathing. Learn more about the different types of plywood. How Plywood is Graded and how to get the right sheet material for your project. The standard classifies panels by bond classification, span rating, performance category, and grade. 4 or 2. As a Structural 1 panel, this line of Blue Ribbon products has enhanced strength and stiffness characteristics. Its high strength-to-weight ratio, affordability, and versatility May 19, 2025 · Plywood prices in 2025 by type and thickness. As a non-engineer, I always err on the…. 5. Plywood sheathing is a common material used in construction projects for flooring, roofs, and walls. We manufacture plywood products to various grades, dimensions and performance standards appropriate for a wide range of customer end-uses. The Learn what plywood to use for exterior walls with this comprehensive guide. We would like to show you a description here but the site won’t allow us. This plywood gets usually manufactured from hardwood or softwood. The stiff and strong quality construction is Ideal for both residential and light commercial construction. Jun 17, 2009 · The APA-Engineered Wood Association outlines the criteria for structural grades of plywood/sheathing. An odd number of plies in plywood can reduce warping and deformation . PS 2 is not limited to plywood, but applies to all wood-based structural panels in general, regardless of composi-tion. 1 mm (1/12 in) shall be permitted as crossbands in 5-ply, 5-layer panels with Performance Category of 15/32 and 1/2 and in parallel-laminated layers as provided for in Section 5. Design capacities for specified conditions are presented for APA Rated Sheathing, APA Rated Sturd-I-Floor and APA Structural I Rated Sheathing panel grades. At Tusker Ply, we deliver high-quality, calibrated Mar 26, 2025 · Non-structural plywood ensures smooth surfaces and a refined appearance. Shop Plytanium 23/32-in x 4-ft x 8-ft Rated Pine Plywood Sheathing in the Plywood & Sheathing department at Lowe's. 1. Popular Links Plywood Sheathing • 3/4 x 4 x 8 Plywood Sheathing • 1/2 x 4 x 8 4-Ply Plywood Sheathing • 1/4 x 4 x 8 Sanded Utility Plywood • 1/8 x 4 x 8 Sanded Utility Plywood • AC2® 3/4 x 4 x 8 Above Ground Green Pressure Treated CCX Plywood Sheathing • 1 x 4 x 8 Plywood Sheathing • Hardwood Plywood • MDF/MDO Panels Sep 30, 2024 · Wondering about the difference between structural and non-structural plywood? Learn how they differ in strength, durability, and applications May 9, 2019 · 2. Because of their split resistance, wood structural panels possess excellent fastener-holding properties and can be nailed very near panel edges. Perfect for DIY enthusiasts, builders, and homeowners alike! There are two types of plywood sheathing: structural and non-structural. Made from cross-laminated hardwood veneers, kiln-dried and bonded with moisture-resistant adhesive, classified to EN636-2 (suitable for humid interiors or sheltered exteriors when sealed), it provides high strength, stability, and impact resistance. Apr 25, 2023 · Plywood is a common construction material, but it's not always clear how much weight it can hold. Aug 21, 2022 · Structural plywood is a type of plywood designed to be high strength and stable. Its thickness often determines how it will be used. The grade refers to the grade of surface covering. Discover the different grades of plywood, including softwood and hardwood, to choose the best material for your project. Likewise, APA the Engineered Wood Association, the agency responsible for approving more than 75% of the structural panels used in residential construction, treat osb and plywood as equals in their published performance guidelines Structural hardwood plywood board, measuring 2440mm x 1220mm (8' x 4') with a 12mm thickness. Available in various sizes at Lowe's. In general, they must meet the criteria of Public Standard 1 (PS-1) and PS-2 for plywood and for OSB. As an APA-rated producer, you can be assured that you will receive consistent quality from Hardel's sheathing panels. PS 2 was the result of a joint U. This plywood type is perfect for beams, flooring, bracing panels, and formworks. This guide to APA – The Engineered Wood Association panel grades and specifications is meant to serve as a useful reference source for structural wood panel users, specifiers, dealers and distributors. Discover plywood sheathing designed for walls, roofs, and subfloors offered in moisture-resistant woods like pine, fir, and hemlock. Jun 13, 2017 · Veneer of 2. Softwood plywood made from spruce The principle of making plywood Plywood is a composite material manufactured from thin layers, or "plies", of wood veneer that have been stacked and glued together. Designers are advised to READ ALL INFORMATION prior to using these values. The recommendations for roof sheathing in Table 33 apply to APA RATED SHEATHING Exposure 1 or Exterior, APA PS 1, Structural Plywood, establishes requirements for structural plywood. ” Wood structural panels include all-veneer plywood, composite panels Plywood: and building shear walls The trickiest and most important part is the plywood. Just select your application (walls, roofs, flooring concrete formwork or even non-structural uses) and we’ll give you options for that application. [1] All May 14, 2021 · Since 2001, the National Design Specification® for Wood Construction (NDS®) has contained provisions in Chapter 16 for design of fire exposed wood members to meet code-required structural fire-resistance ratings based on a standardized ASTM E119 time -temperature exposure. 4m x 1. 2m x 9mm On offer today is non-structural DD Reject plywood. At Tusker Ply, we deliver high-quality, calibrated plywood designed to match a wide range of applications—from heavy-duty 1. It is a perfect choice for long-term load carrying and structural performance. Wood structural panels include structural plywood, oriented strand board (OSB), other mat-formed panels, and composite panels. This information applies only to products tested and audited under APA programs PS 1, Structural Plywood, establishes requirements for structural plywood. The Laws of No. Mar 26, 2025 · In the evolving world of construction and interior design, choosing the right plywood is crucial. Get all your questions answered in this woodworker's guide to buying plywood. Less frequently seen is particleboard and it is seldom used in structural applications, but is often used as underlayment over floor sheathing, in cabi-nets, and in furniture. If Aug 15, 2023 · From the types and grades to uses and benefits, our Ultimate Guide to Plywood covers everything you need to know. 1 Adhesive Bond Classification The bond classification relates to moisture resistance of the glue bond, and thus to structural integrity of the panel. The cross-grain construction enhances the structural integrity of the material. Oct 27, 2023 · When it comes to attaching plywood to framing in construction and woodworking projects, selecting the right nails is crucial. of Plies will increase 2 plies; 2. Certain panel capacities and adjustment factors are still under development. Learn about A, B, C, and D grades, and more. AA Marine, Superply, and more options! Mar 25, 2025 · OSB vs Plywood Strength They are both strong for structural use, but plywood tends to be stiffer and holds nails/screws a bit better while OSB has similar strength everywhere but can flex slightly when loaded. Slightly weaker types include exterior plywood and overlaid plywood. Thinner plywood is easier to manipulate and works well for decorative or curved designs. Product Standard PS2-18 i s a performance-based standard, setting down structural criteria for assessing the acceptability of plywood, OSB and composite panels for load bearing, sheathing applications in construction such as floors, walls and roofs. Understanding the differences between these two types is essential for making informed decisions in various projects. Explore expert tips, plywood types, and recommendations. Technical guide for structural plywood design using Allowable Stress Design (ASD). It… Aug 22, 2024 · Plywood is an essential material in modern construction, known for its versatility, strength, and cost-effectiveness. Pickup in-store or get Delivery to Berkeley, Concord or surrounding areas in California. Jun 27, 2015 · Whether you are building a load bearing support beam for your wall or a deck beam, you probably wondered about adding a 1/2″ plywood strip in between 2x lumber. Plywood comprises an odd number of layers, each placed perpendicular to the adjacent ones. In this concise guide, we will explore the technical details of the nails used for this specific task. Recommended loads for sheathing and flooring applications in these publica-tions directly reflect minimum perfor-mance criteria given in Voluntary Product Standard PS 1-95, Voluntary Product Standard PS 2-92 and in APA PRP-108 Performance Standards and Policies for Structural Design capacities for specified conditions are presented for APA Rated Sheathing, APA Rated Sturd-I-Floor and APA Structural I Rated Sheathing panel grades. The choice of nails can impact the structural integrity and overall quality of your work. Plywood with 1 ply and 2 plies will warp and twist . This plywood gets specially treated with preservatives, varnish, or paint Plywood is a common wood panel used for a multitude of industries and purposes. Other structural plywood panels, however, as well as OSB panels, are manufactured under Voluntary Product Standard PS 2, Performance Standard for Wood Structural Panels, that establishes performance criteria for specific designated construction applications. Load Mar 25, 2025 · Calculator and charts for plywood weights, OSB weights and weights for MDF, MDO, and particle board. FlatLOK delivers strong, code-compliant connections for multi-ply LVL, girder trusses, and multi-ply lumber beams. The most important factor in a retrofit is the plywood’s ability to resist earthquakes. Find out what the strongest plywood is and can be - discover all this and more at Sheet Good, a place to talk about plywood. Find Plywood plywood & sheathing at Lowe's today. Sheathing Plywood is the original structural wood panel. S Department of Commerce Voluntary Standard PS 1, “Structural Plywood1” or the U. It adds proven performance and durability to new homes, room additions and renovations. Jan 1, 1995 · Is there benefit in using plywood in built-up beams? Is there a better technique? What are the actual logistics behind all this wood? Jim Thompson, a former framing carpenter and currently a structural engineer, gives his expert advice on the built-up beams dilemma. Veneer of 2. Dec 25, 2024 · Learn the essentials of plywood—from types and grades to moisture resistance, sustainability, and expert tips for choosing the perfect sheet for your project. Here's the simple answers by thickness. Plywood, an engineered wood product, comprises several thin layers of wood veneer bonded together, making it a popular choice for various applications. We use mainly inland Douglas fir and Western larch due to their ability to produce fine grain and smooth faces. The Importance of Plywood Thickness The thickness of a sheet of plywood affects the strength, weight, and application possibilities. However, some customers have reported issues with the quality, including warping, inconsistent thickness, and knots. Specifications– Structural 1 Panels Blue Ribbon® Structural 1 oriented strand board (OSB) is a multi-layered structural panel product for residential and light commercial construction. I believe if one looks at the APA website, one can determine the effect of joints on a built up beam. uquv gyyr ewqbl yiloem utjexkg zwfic byvksu nfvfdyd celxav uvaagef eseurh wgefy zmdmfxs yijx ddlqvt