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Fm global roof deck attachment.
The research is also used to enhance external standards and codes.
For mechanically attached single ply roofing systems the test involves building a roof assembly on a test frame that measures 12 feet by 24 feet.
Factory mutual fm attachment layout examples.
This section contains reports that are generated to update national and international codes and standards.
The specific test that pertains to wind uplift utilizes a test apparatus designed by fm approvals.
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.
The support fastener pattern should be determined for the type of fastener desired using the rdnp determined above.
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.
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.
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.
If a specific fastening detail is required every 6 in.
These values are in reference to mechanically attached insulation cover boards under.
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.
The test frame has the appropriate roof deck attached to supports.
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.
If a mechanically attached roof cover is to be used select an fm approved roof assembly that is adequate for the field of roof and enhance the perimeters and corners as follows.
3 2 mm but less than or equal to 0 375 in.
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.
