Steel Roof Diaphragm Design

It includes information for the design of steel deck diaphragms for roof and floor decks and complies with the requirements of the ansi aisi s310 2013 north american standard for the design of profiled steel diaphragm panels.

Steel roof diaphragm design.

In its most basic form a diaphragm behaves as if it were a short deep beam. The diaphragm of a structure often does double duty as the floor system or roof system in a building or the deck of a bridge which simultaneously supports gravity loads. Vulcraft roof deck design tools 2018 ibc deck diaphragm calculate your unfilled deck diaphragm shear and stiffness for your exact condition based on the american iron and steel institute aisi s310 16. The maximum average shear r b occurs at the ends of the roof diaphragm.

Or a concrete slab in. Diaphragm design 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. Simply input your project data and our tool will customize your load tables or diaphragm designs from among more than 73 000 permutations. Steel roof and floor deck diaphragm design requires careful attention to load paths stiffness variations fastener types and regional preferences figure 1.

Metal deck or composite metal deck in steel construction. September 2015 the fourth edition of the sdi diaphragm design manual ddm04 replaces the third edition ddm03. The program is based on the steel deck institute sdi diaphragm design method and incorporates the latest icc es ac43 performance data. Our new interactive deck tools provide the fastest way to generate your load tables and diaphragm designs for roof composite and form deck.

Zones near the mid span of the roof are subjected to less unit shear therefore less diaphragm strength is required. Diaphragms are usually constructed of plywood or oriented strand board in timber construction. Steel roof and floor deck diaphragm design requires careful attention to load paths stiffness variations fastener types and regional preferences figure 1. Roof deck historically published diaphragm design tables for roof deck have been based on diaphragm shear loads only.

Results are output in a convenient downloadable pdf. The larger design shears may be resisted by using both heavier gage panels and fewer. In its most basic form a diaphragm behaves as if it were a short deep beam.