Already this year, FM Global has made several noteworthy changes affecting roof assemblies. If you are involved with roofing projects where FM Global's guidelines apply, you should become familiar with these changes, which follow.
RoofNav is FM Approvals' (a subsidiary of FM Global) online classification calculator and approval listing directory.
When RoofNav was introduced in 2005, it was available on a relatively costly annual subscription basis. However, as of January, RoofNav is free of charge to all users and available by accessing www.roofnav.com. (For additional information about RoofNav, see "FM RoofNav," June 2005 issue, page 20.)
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