Plywood span rating. Continuous sheathing with plywood or OSB panels, as shown in Figure 8, has gained popularity because it offers several advantages to builder and homeowner alike and plays a highly beneficial role in the overall integrity of a home. The only issue is, when referring to the 2020 APA Panel Learn how to read an APA (American Plywood Association) grade stamp on OSB sheathing panels, and what info it conveys. , Performance Category 23/32 panels with a span rating of 48/24 over framing 48 inches on center—is also cost effective for long-span flat or pitched roofs. Nailing recommendations are given in Table 36. Load-span tables for specific structural-use panel applications are included in several APA publications. 0 – 01/2008 Table B Relationship Between Span Rating and Nominal Thickness for Plywood(a) For each combination of span and Span Rating, loads are given for deflections of L/360, L/240 and L/180, and maximum loads controlled by bend- ing and shear capacity. Nailing recommendations are given in Table 35. ABSTRACT Voluntary Product Standard PS 1-09, reproduced in the following pages, provides expanded and updated requirements for producing, marketing, and specifying plywood for construction and industrial uses. For each combination of span and thickness (or Span Rating), loads are given for deflections of L/360, L/240 and L/180, and maximum loads controlled by bend-ing and shear capacity. Structural I Rated Sheathing panels carry the same Span Ratings as Rated Sheathing panels of the same thickness, e. Plywood siding rated 16 o. Provides excellent performance. Hello Everyone. These span tables for joists and rafters are calculated on the basis of a series of modulus of elasticity (E) and bending design values (F b). 2 of this report. The values given in Tables 1 and 2 may be adjusted for panel type using Table 3, Adjustments to Allowable Load Capacities Based on Panel Grade and Construction. Additionally, compression perpendicular to grain design values (F c⊥) are included as a consideration for selection of joists and rafters. Most commonly, sanded plywood products intended for a variety of industrial and construction uses are identified only with a Group Classification, not with a span rating as explained next. APA RATED SIDING is a wood-based, structural-use panel intended for use in construction application as exterior siding when fastened to supports spaced in accordance with the Span Rating in inches. The span rating on APA RATED STURD-I-FLOOR underlayment and APA RATED SIDING panels appears as a single number. 1(2) is applicable to The standard classifies structural plywood by bond classification, span rating, performance category, and grade. How to read the grading stamps and some sample OSB and plywood ratings are provided. The larger the span rating numbers, the stronger and stiffer the panel, regardless of thickness. Give a modern and elegant look to any room in your home by adding this excellent Rtd Sheathing Syp. 1(2) is applicable to Includes information on span ratings, installation details, cantilever designs, architectural specifications and engineering design properties for APA Performance Rated I-Joists. Code regulations are consolidated by state and city for easier navigation. It covers the manufacture of such plywood from some 70 wood species and supersedes the Product Standard published in 2007. 2. or 24 o. 0 – 01/2008 Table B Relationship Between Span Rating and Nominal Thickness for Plywood(a) However, using fewer supports with thicker panels—e. Table R602. For example, if we have 24/0 or let's say, 32/16 I understand the left hand number means the span between joists across the long direction of the plywood but what is the right hand n span ratings are permitted as described in Notes h and I to Table R503. , 15/32 Performance Category (PERF CAT) Structural I and 15/32 PERF CAT Rated Sheathing are both Span Rated at 32/16 and deliver the same capacity for most applications. Add proven performance and durability to your new home by choosing this Ply Rated Plywood Sheathing. And, for the first time, Span Ratings were incorporated in the standard. The left-hand number is the maximum recommended center-to-center spacing for supports in inches when the panel is used for roof sheathing with long dimensions across supports. The second number is the maximum center-to-center spacing of supports in inches when the panel Lend additional stability to your outdoor playset with this Unbranded Oriented Strand Board. Us 13. g. The Span Rating appears as two numbers separated by a slash, such as 32/16, 48/24, etc. Regional availability also comes into play. 3(3) Requirements for Wood Structural Panel Wall Sheathing Used to Resist Wind Pressures, Footnote C (Residential Code) c. Page 2 of 7 V1. Recommended loads for sheathing and flooring applications in these publica-tions directly reflect minimum perfor-mance criteria given in APA PRP-108, Performance Standards and Policies for Structural-Use Panels and Voluntary Product Standard PS 2-04, Perfor-mance Standard for Wood The Plywood Span Calculator is an invaluable tool designed to determine the maximum allowable span for plywood in various applications. Recommended live loads are given in Table 33. Plywood APA STURD-I-FLOOR meets PS 1 Underlayment specifications, but in addition to qualifying as underlayment, STURD-I-FLOOR carries a Span Rating (thin underlayment carries no Span Rating). Ideal for subfloor applications. With the development of Product Standard PS 1-66, the three standards were combined into one. Learn to size joists and rafters with AWC span tables; this tutorial covers load combinations, deflection limits and using tables for safe design. The span rating is determined on the basis of the results of performance tests as noted in Section 3. DOWNLOAD Resource Library Access a complete list of APA publications about I-joists in APA's Resource Library. Doesn’t that mean that it is rated to span 40″ in the long […] Explore a searchable database of US construction and building code. The following load-span tables apply to sanded, touch-sanded, and unsanded plywood manufactured in accordance with Voluntary Product Standard PS 1-95, with face grain parallel to sup-ports, and face grain across supports. 20 oc, indi- cating the maximum spacing of supports for combination subfloor-underlayment applications. Within the grade stamp on a panel you will find the span rating. Span rating — Two numbers separated by a forward slash. Here's the simple answers by thickness. Except for APA RATED SIDING panels, the Span Rating applies when the long panel dimension or strength axis is across supports, unless the strength axis is otherwise identified. Mar 14, 2023 · What Is The Span Rating For Plywood? The span rating for plywood is a measurement of the maximum distance between the center-to-center space along a plywood plank that can be allowed before perpendicular support is required. Plywood and OSB (oriented strand board) has a grading system. 1. It provides test methods, a glossary of trade terms and definitions, and a quality certification program whereby agencies inspect, sample, and test products for conformance to this standard. The Plywood Span Calculator is an invaluable tool designed to determine the maximum allowable span for plywood in various applications. These include single-span, two-span and three-span (see below). The standard classifies panels by bond classification, span rating, performance category, and grade. (1) Some manufacturers also produce a premium “N” grade (natural finish) veneer, available only on special order. My builder is using 3/4″ plywood roof sheathing that is stamped with a span rating of 40/20. Common thickness and span ratings include: 5/8 inch plywood: Suitable for joists spaced 24 inches on center, span rating usually 32/16 (roof/floor) SFPA offers nearly 100 span tables for treated Southern Pine lumber, joists and rafters, and headers and beams. shall be permitted as an alternate to panels with a 24/16 span rating. Wall-16 and Selecting Sheathing Panels Sheathing should consist of performance-rated structural panels. I'm trying to understand what span rating is for a plywood but I don't get the right hand number. However, using fewer supports with thicker panels—e. When there are two numbers separated by a slash (i. The span rating looks similar to a fraction and gives the roof span first and the floor span second. Wood structural panels include structural plywood, oriented strand board (OSB), other mat-formed panels, and composite panels. The span ratings for APA RATED STURD-I-FLOOR and underlayment panels, like those for APA RATED SHEATHING, are based on application of the panel with the long dimension or strength axis across three or more supports. If there are two numbers, the first refers to roof applications, the second to f… Span Rating denotes the maximum permitted centre to centre support spacing. VVoluntary Product Standard PS 1, Structural Plywood was developed cooperatively by the plywood Plywood span ratings indicate the distance between framing members for roofing and flooring. The Span Rating concept would later be used as a basis for the devel-opment of APA Performance Standards. Plywood is a common construction material, but it's not always clear how much weight it can hold. For each combination of span and thickness (or Span Rating), loads are given for deflections of L/360, L/240 and L/180, and maximum loads controlled by bend-ing and shear The Span Rating for APA Rated Sturd-I- Floor is a single number, e. The span rating indicates how far plywood panels can span between supports without excessive deflection. Span rating, Canadian Standard — Span rating and end-use designation for nad el Sheathing sta her se designation, Canadian standard. There are three possible span conditions to consider when computing the uniform load capacities of structural-use panels depending on the size and orientation of the panel and the spacing of the framing support members. The Sturd-I-Floor rating is based on the panel being used with the long dimension across at least three supports. Sheathing/ceiling deck has one face textured. See Treated Plywood (page 18) for recommended plywood grades and exposure durability classifications in applications requiring fire-retardant-treated or preservative-treated plywood. Wood structural panels with span ratings of Wall-16 or Wall-24 shall be permitted as an alternate to panels with a 24/0 span rating. In lieu of using Table R503 . May 2006 Load-span tables for specific structural-use panel applications are included in several APA publications. 48/24), the first number is the maximum recommended center-to-center spacing for supports in inches when the panel is used for roof sheathing with the long dimension across supports. These ratings assume that the panel is oriented with the long axis across at least three framing members, and it should be read in the context of the sheet’s panel grade, which is printed directly above it on the ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Panel Use Ratings For framing, choose only from the following panel grades: For framing, select panels with only the […] Span Rating This is the maximum distance between supports—joists, studs, or rafters—that the panel is designed to span safely. Span ratings on APA rated Sturd-I-Floor subfloor panels and APA rated siding are shown as a single number. 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 The highest quality birch plywood Birch plywood panels featuring a consistent high density and grain structure provide a very high strength to weight ratio which is ideal for a wide range of structural and engineering applications. Recommended live loads are given in Table 34. The span rating indicates the maximum inches between supports (i. joist, truss etc) that the panel may be applied. The Engineered Wood Association has a labeling system to grade lumber for its recommended use. For the 2021 version of APA's Load Span Tables, I noticed that the uniform load (PSF) values for plywood sheathing have different values than the Structural I sheathing (specifically for the Perpendicular to Supports Strength Axis). 1(1). When plywood combination subfloor underlayment is to be used, the allowable span as listed in Table R503. The standard classifies structural plywood by bond classification, span rating, performance category, and grade. e. For ease of use, the specifical tool converts thicknesses into mm measurement, providing the midpoint as well as tolerance ranges. Fire Protective Assemblies for Wood I-Joist Floors. 1(1), the code permits the use of APA E30—Engineered Wood Construction Guide. PyroGuard plywood span ratings and lumber design value adjustments are based on strength testing after prolonged exposure to high temperatures experienced in roof applications. Mar 4, 2024 · On sheathing panels, the span rating is marked as two numbers separated by a slash: The number on the left marks the maximum recommended center-to-center spacing (in inches) for supports when used for roof sheathing with the long dimensions across supports. c. These are made from plywood or oriented-strand board (OSB), and should carry a stamp (Figure 2-8) from APA-The Engineered Wood Association (formerly the American Plywood Association). In the Canadian span marking, the “R” signifies roofs an th pe P ring or performance specification. Our easy-to-install ZIP System® sheathing and tape streamlines the weatherization process that delivers moisture and air protection with a water and air barrier. n span ratings are permitted as described in Notes h and I to Table R503. Explore a searchable database of US construction and building code. A basic overview of the manufacture, specification, and applications of plywood, including technical publications and a list of plywood manufacturers. 71dmoz, eqc4p, u1q83, jypku, fmqcmq, szb6p, ksgouo, b3lnv, ai91j, le13b,