Web Joist

Links to the individual sections of this page:

• Resources and Reports regarding Web Joist™ open-web trusses
• Resources and Reports regarding Web-i® Joists
• Resources specific to the State of California or the City of Los Angeles
• Product Specification and Design
• Material Safety Data Sheets (MSDS)

Resources and Reports regarding Web Joist™ open-web trusses

Resources and Reports regarding Web-i^® Joists

ICC-ES ESR-2974 512 KB ICC-ES Evaluation report for Web i® Wood I-Joists per 2012 and 2018 IBC 2020-July WEB-i Installation Info 190 KB WEB-i Installation Info WEB-i Length on Slope 60 KB WEB-i Length on Slope WEB-i Sloped Hangers & Bevel Plates 92 KB WEB-i Sloped Hangers & Bevel Plates WEB-i Web Stiffeners 92 KB WEB-i Web Stiffeners ESR-1338, IBC, GA 3838 KB This ICC-ES Evaluation Report™ evaluates fire-resistance ratings for Gypsum Board Assemblies. File also includes a summary page by Web Joist, relevant pages of the 2012 IBC, and relevant pages from the Gypsum Association™ Fire Resistance Design Manual.

Resources specific to the State of California or the City of Los Angeles

DSA IR 23-9-10 356 KB California Division of the State Architect Interpretation of Regulations pertaining to Prefabricated Wood I-Joist per 2010 or later editions of California Building Code (CBC). 2018-Oct-05 DSA IR 23-8 94 KB California Division of the State Architect Interpretation of Regulations pertaining to manufactured wood-chord-metal-web trusses. 2012-12-21 DSA IR A-5 204 KB California Division of State Architect Interpretation of Regulations regarding the DSA Structural Safety’s (DSA-SS) policy on the acceptance of structural products and to clarify DSA policy on the acceptability and use of product evaluation reports issued by other agencies and organizations, for projects submitted to DSA under the 2007 or later editions of the California Building Code (CBC). Rev 2017-01-27 LA City Fabricator Certificate of Approval. 285 KB City of Los Angeles, California Certificate of Approval for Web Joist Northwest Corp. manufacturing plant. LA City RR 25824 1.9 MB City of Los Angeles, California approval for WEB-i® Joists 2018-Dec-01 2020-Sept-01 LA City RR 25825 733 KB City of Los Angeles, California approval for Web Joist™ trusses 2019-Mar-01 2020-Sept-01

Product Specification and Design

Trig. & Trusses 90 KB Summary sheet of trigonometry formulas relevant to trusses. Par. Chord Truss on Slope w/Cant. 108 KB Parallel chord truss on slope with cantilever. WEB-i Length on Slope 60 KB Some diagrams for calculating overall length of a WEB-i joists on a slope. WEB-i Sloped Hangers & Bevel Plates 92 KB Requirements for sloped seat joist hangers. WEB-i Web Stiffeners 92 KB WEB-i Web Stiffener requirements. Slope Percent 20 KB Table of slopes and slope percents. Partition Load 31 KB Short history of building code requirements for partition loads. Load Combinations 536 KB Load combinations using allowable stress design per Section 1605.3 of IBC 2012. Describes changes from IBC 2009. Snow Drift Calc 38 KB Microsoft Excel document An Excel spreadsheet to assist in snow drift calculations. Updated 2012-09-20 Nailing into Chord or Flange 71 KB Requirements for nailing into chord or flange of trusses and i-joists. New 2014-05-02 Nailing Sheathing to Web Joist Products 439 KB Requirements for nailing sheathing to G=0.50 & G=0.46 Material. On center spacing may be same in most cases. New 2017-09-20 Non-Bearing Partition Walls 30 KB Diagram for non-bearing partition walls below trusses and joists. Note that a minimum half-inch gap is required. New 2011-03-09