Fm Global Roof Drainage Requirements
Fm global is influencing our industry tremendously by codifying or standardizing roof designs mandating safer fire and wind rated roofs.
Fm global roof drainage requirements. Here s what that means. Increasing from the 5 drain shown to a 6 drain increases the roof area that can be served by about 1 6 x the table data. Design live load of the roof. This section contains reports that are generated to update national and international codes and standards.
Thereby adhering to factory mutual requirements is of utmost importance when working on the roof of an fm global insured building. 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. A common mistake made when these documents are not followed is that roof edge fascias end up being inadequately secured says judd peterson aia president of judd allen group edina minn. Since reroofing represents roughly seventy percent of the roofing contracts in the market each year we ll use it as a case study to illustrate the detailed knowledge required to meet factory mutual standards.
Roofnav i s recommended for the selection of fm approved roof assemblies. Roof specifications and roofnav assembly number fm global form 2688 application for acceptance of roofing systems should be completed for each type of roof covering system for each building. Install wood cants that are not pressure treated against decay around parapet perimeters. 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.
The research is also used to enhance external standards and codes. Your roof needs replaced. For guidelines on designing roof drainage systems see fm global s ds 1 54 roof loads for new construction data sheet. Your insurance provider is fm global.
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. Fm approved pv modules are recommended to fm global clients worldwide the hazards as energy costs rise and pressure mounts to offset or reduce greenhouse gas emissions a growing number of corporations utilities and municipalities are turning to photovoltaic pv systems to turn sunshine directly into electricity. All canales and or scuppers must have a metal pan lining extending not less than 6 inches 152mm past the inside of the parapet and not less than 6 inches 152mm from each side of the canale or scupper opening. Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most.
Refer to the nrca roofing manual and fm global property loss prevention data sheets. Reference fm global data sheet 1 54 3.