Metal roof attachment method
![metal roof attachment method metal roof attachment method](https://www.buildingenclosureonline.com/ext/resources/Products2/Products-4/Feature_skyliner.jpg)
SDI’s design guidelines are based on uniform loading, such as those provided by an adhered membrane roof system.įM Global’s Loss Prevention Data Sheet 1-29, “Roof Deck Securement and Above-Deck Roof Components,” issued February 2020, provides guidelines for steel roof deck attachment for FM-insured buildings.įM 1-29’s Section 2.2.3.4 indicates one of two approaches-a performance-based approach or a prescriptive enhancement approach-can be used.
![metal roof attachment method metal roof attachment method](https://www.roofersguild.com/site/wp-content/uploads/commercial-standing-seam-e1567011495813.jpg)
This document specifies connections be designed in accordance with the American Iron and Steel Institute’s specification AISI S100, “North American Specification for the Design of Cold-Formed Steel Structural Members.”ĪNSI/SDI RD-2010 requires steel roof decks be designed to resist required net uplift forces but not less than 45 pounds per square foot at eave overhangs and 30 psf for all other roof areas.ĪNSI/SDI RD-2010’s guidance does not specifically address increased design wind loads at roof area perimeters and corners or nonuniform uplift loading conditions, such as those created with seam-fastened mechanically attached single-ply membrane roof systems. The Steel Deck Institute and FM Global provide two generally recognized but somewhat different approaches to steel roof deck attachment.ĪNSI/SDI RD-2010, “Standard for Steel Roof Deck,” is a code-recognized standard for the materials, design and erection of steel roof deck panels. Unfortunately, there appears to be a lack of clear guidance between steel roof deck installers and the roofing industry regarding proper steel roof deck attachment. Proper attachment of a steel roof deck to a building’s underlying structural framing is an important consideration for proper roof assembly design.