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Diaphragm design information for Vulcraft roof and floor decks is based on the Steel Deck Institute “Diaphragm Design Manual, Third Edition” (DDM03) in accordance with the 2015 IBC. ROOF DECK Historically, published diaphragm design tables for roof deck have been based on diaphragm shear loads only.
Always contact Vulcraft when using loads in excess of 200 psf. Such loads often result from concentrated, dynamic, or long term load cases for which reductions due to bond breakage, concrete creep, etc. should be evaluated.
Our online tools will help you select the most cost-effective products for your project, including joists, roof deck, floor deck, composite deck, and dovetail deck. Please limit usage to 6 design tools at a given time for maximum performance.
Total loads shown in the table are allow-able total loads in ASD; the loads multi-plied by 1.5 are approximately factored total loads in LRFD.
FLOOR DECK DESIGN TOOLS. Whether you need to calculate unshored construction spans, deck-slab diaphragms, spanning pour stops, or composite superimposed loads, our Floor Deck Design Tools can help you find the information and calculations that your project needs.
Vulcraft provides a number of resources to help you efficiently and successfully specify steel joists, deck, and grating. Our latest catalogues are listed below. Each catalog can be viewed online, downloaded, or ordered.
This document provides specifications and load tables for a 22 gauge grade 50 steel roof deck with #10 self-drilling screws for sidelap connections and 5/8" arc spot welds for support connections.
