Fm Global Roof Drainage Requirements

For guidelines on designing roof drainage systems see fm global s ds 1 54 roof loads for new construction data sheet.

Fm global roof drainage requirements. Your roof needs replaced. Thereby adhering to factory mutual requirements is of utmost importance when working on the roof of an fm global insured building. This section contains reports that are generated to update national and international codes and standards. 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.

The research is also used to enhance external standards and codes. 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. 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. Your insurance provider is fm global.

You have to sign up in order to view data sheets on the fm global website but it s free and definitely worth your time. Install wood cants that are not pressure treated against decay around parapet perimeters. Dropping from the 5 drain in the table to a 3 drain cuts the serviced or drainable roof area to about 0 26 x the roof areas shown in the table. 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.

Refer to the nrca roofing manual and fm global property loss prevention data sheets. 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. Roofnav i s recommended for the selection of fm approved roof assemblies. Reference fm global data sheet 1 54 3.

Fm global is influencing our industry tremendously by codifying or standardizing roof designs mandating safer fire and wind rated roofs. All canales and scuppers must have positive drainage. Design live load of the roof. 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.

Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most. Here s what that means.