My Cart
The mental health of your team is important. Let us help.

Do you overspecify?

Abstract
A large number of project specifications for low-slope membrane roof systems designate an Underwriters Laboratories (UL) Inc. Class A fire-resistance rating and RM Approval 1-90 wind-resistance approval. For many buildings' roof systems, these classifications are in excess of building code minimum requirements. This month, the author explains how specific fire- and wind-resistance classifications are determined.
Date
12/2005
Author(s)
Mark Graham
Page(s)
18
Source
Professional Roofing / National Roofing Contractors Assn
Keyword(s)
project specification; Class A fire resistance; 1-90 wind resistance; classifications; building code

Download

Note: Documents in this section are provided as Adobe Acrobat PDF files. In order to print and view PDF files, the Adobe Acrobat Reader software/plugin, which runs on Microsoft Windows, Macintosh, OS/2 and various versions of UNIX, must be installed on your computer. Adobe Acrobat Reader is available for download as freeware from Adobe Acrobat's website. Please note that the resolution of on-screen versions is not as high as printed versions of PDF files.
Advertisement

Subscribe for Updates Join 25,000+ roofing professionals following NRCA

Subscribe to NRCA