Steel Diaphragm Roof Decks

September 2015 the fourth edition of the sdi diaphragm design manual ddm04 replaces the third edition ddm03.

Steel diaphragm roof decks.

In its most basic form a diaphragm behaves as if it were a short deep beam. 9 16 form decks and composite decks are available for floor decks. Deck types are described in the steel deck institute sdi publication no. Steel roof and floor deck diaphragm design requires careful attention to load paths stiffness variations fastener types and regional preferences figure 1.

The second edition of the sdi roof deck design manual rddm2 2020 by steel deck institute includes 15 design examples and 40 ksi load tables including new ones for concentrated and moving loads. Steel roof and floor deck diaphragm design requires careful attention to load paths stiffness variations fastener types and regional preferences figure 1. For more than 50 years verco has been manufacturing many different types of deck including roof deck floor deck composite floor deck cellular and dovetail deck. Select the type of steel deck panel to calculate diaphragm shear strength tables.

In its most basic form a diaphragm behaves as if it were a short deep beam. These decks are bare decks with no fill. 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. 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.

Roof diaphragm panels typically vary from 0 0295 inches to 0 064 inches in thickness and come in widths of 18 inches to 36 inches or more. 31 design manual for composite decks form decks and roof decks. 1 5 wide rib narrow rib intermediate rib and 3 deep rib deck profiles are available for roofs. Download the first edition of our steel deck on cold formed steel framing design manual sdcfsfdm or visit our order page to purchase a printed and bound copy.