Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most.
Fm global roof deck attachment.
If a specific fastening detail is required every 6 in.
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.
These values are in reference to mechanically attached insulation cover boards under.
This section contains reports that are generated to update national and international codes and standards.
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.
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.
The support fastener pattern should be determined for the type of fastener desired using the rdnp determined above.
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.
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.
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 test frame has the appropriate roof deck attached to supports.
The research is also used to enhance external standards and codes.
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.
3 2 mm but less than or equal to 0 375 in.
The specific test that pertains to wind uplift utilizes a test apparatus designed by fm approvals.
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.
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Factory mutual fm attachment layout examples.
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.
