A class i insulated steel roof deck is one which meets the criteria of this standard for fire wind uplift live load resistances corrosion of metal parts and fatigue of plastic parts.
Fm global roof deck.
Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most.
Equal to one half of the deck span is applied per proprietary listings.
This standard states factory mutual research requirements for approval of class i insulated steel roof decks.
Fm global is a commercial and industrial property insurance company that according to its website is guided by the belief that most losses can be prevented.
This section contains reports that are generated to update national and international codes and standards.
Here s what that means.
Fm global property loss prevention data sheets.
The research is also used to enhance external standards and codes.
Your insurance provider is fm global.
203 mm rib module.
For 3n 3ni 3np 3na 3npa and 3nia steel roof decks above deck component fastener spacing is reduced as described in the following table to accommodate the 8 in.
Roof deck securement and above deck roof components.
The standard applies to all components as assembled in the system below the roof cover.
Fm global is influencing our industry tremendously by codifying or standardizing roof designs mandating safer fire and wind rated roofs.
It will be a long journey and we are prepared to stay the course for as.
Designed to help roofing professionals roofnav provides easy access to all roofing related information from the fm approvals approval guide and related installation recommendations from relevant fm global property loss prevention data sheets.
610 610 mm could use a spacing of 14 24 in.
Refer to the use of steel roof decks and fasteners throughout listings for details and limitations.
We also know that in order to create change we must look inward.
Your roof needs replaced.
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.
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 loss prevention data sheets.
Allowable fm deck span charts for windstorm ratings less than 1 105 are based upon numerous limit states defined in fm class 4451 approval standard which include.
Meets maximum class 1 90 or per proprietary listings.
The roof cover is tested in accordance with factory mutual research approval standard 4470.
Membrane width 1 2 deck span.
200 lb construction and maintenance deck stress and deflection uplift deck stress fastener tensile capacity and.
A point attached system with fm approved fastener spacing for class 1 90 of 24 24 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.
