Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most.
Fm global roof drainage requirements.
Your insurance provider is fm global.
Design live load of the roof.
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.
Reference fm global data sheet 1 54 3.
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.
All canales and scuppers must have positive drainage.
Here s what that means.
The research is also used to enhance external standards and codes.
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 is influencing our industry tremendously by codifying or standardizing roof designs mandating safer fire and wind rated roofs.
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.
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.
Thereby adhering to factory mutual requirements is of utmost importance when working on the roof of an fm global insured building.
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.
Your roof needs replaced.
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.
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.
Refer to the nrca roofing manual and fm global property loss prevention data sheets.
For guidelines on designing roof drainage systems see fm global s ds 1 54 roof loads for new construction data sheet.
Install wood cants that are not pressure treated against decay around parapet perimeters.
