Steel Roof Diaphragm Design Example

The manual includes pertinent design information considerations fastener information deck shear capacity tables and a plethora of highly relevant design examples stepping you through all the.

Steel roof diaphragm design example.

It should be noted that the flexible diaphragm presented in the example is a conservative approach as it assumes two simple spans. The roof deck is supported by joists that are thick and spaced at 5 ft. Design a roof deck for a length of l 500 ft. The roof diaphragm design example can go up against different style that when nitty gritty right can ooze a cutting edge feel.

Design the diaphragm for wind loading using allowable stress design method. The manual includes pertinent design information considerations fastener information deck shear capacity tables and a plethora of highly relevant design examples stepping you through all the. R divided by length b equals the collector. The sdi diaphragm design manual third edition is an excellent design reference every engineer should utilize if designing with steel deck diaphragms.

First off the roof diaphragm design example is an extremely basic direct and utilitarian design every single current trademark. A roof design gives the chance to extra floor space in the roof volume similar to a space or upper room space. See the attached examples and video to really help better understand general diaphragm design better. Now let s work on an example.

For the roof in this example the total uniform load on the diaphragm equals the combined effects of the windward and leeward cladding reactions ww wl. The roof deck is a wr wide rib type panel with a panel width of 36. Themaximum end reaction r of the roof diaphragm therefore is ww wl x l 2. This example illustrates the design of a large flexible diaphragm in a big box retail store subjected to lateral seismic loading.

And a width b 300 ft. September 2015 the fourth edition of the sdi diaphragm design manual ddm04 replaces the third edition ddm03. The sdi diaphragm design manual third edition is an excellent design reference every engineer should utilize if designing with steel deck diaphragms. The roof structure consists of a panelized hybrid roof system which is very common in large diaphragm roofs in the seismically active western united states.