Fm Global Roof Deck Attachment

150 mm on center in the field of the roof use two of the same deck welds or fasteners in the same deck rib in the perimeter fm 1 29 2 2 3 4.

Fm global roof deck attachment.

Steel 22 gauge and heavier. In january fm global significantly re vised its property loss prevention data sheet 1 29 roof deck securement and above deck roof components this data sheet is intended to provide fm global s recommendations for secure ment of roof decks to roof structures and the proper design and installation of above deck roof components insula tion membrane you need to be aware of the revisions because they may affect roof system design and limit the use of some products and systems. 2 1 1 the x hsn 24 fastener is a powder actuated steel deck structural attachment fastener used in securing 16 18 20 and 22 gauge msg 0 0598 0 0474 0 0358 and 0 0295 in. Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most.

Fm 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. This section contains reports that are generated to update national and international codes and standards. Designed to help roofing professionals roofnav provides easy access to the most up to date fm approved roofing related information and related installation recommendations from relevant fm global property. These values are in reference to mechanically attached insulation cover boards under.

Roof cover performance is evaluated in accordance with fm approval standard for class 1 roof covers 4470. 1 5 1 2 0 91 and 0 75 mm thick steel roof deck to supporting steel thicknesses of greater than or equal to 0 125 in. The information listed in the chart below is for use with the referenced roof deck fastener type minimum pullout values and required penetration depths based on fasteners type. Structural concrete minimum 2 500 psi.

Steel deck performance is qualified by fm approval standard for steel deck 4451. Factory mutual fm attachment layout examples. If a specific fastening detail is required every 6 in. Fm 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.

We would like to show you a description here but the site won t allow us. If a building is fm global insured and has a nonconforming deck type such as half inch plywood fm global will work with the building owner designer to find an acceptable roof cover for that project. Fm global conducts research for use in the data sheets that our engineering field staff use to support our client s efforts to protect their business. 3 2 mm but less than or equal to 0 375 in.

In general fm approved decks include.