April 2008
Search    

SPRI WD-1 | Tech Today

Tech Today not ratednot ratednot ratednot ratednot rated

SPRI WD-1

by Mark S. Graham
Be the first to comment


SPRI recently published ANSI/SPRI WD-1, "Wind Design Practice for Roofing Assemblies." This standard provides a recognized consensus-developed methodology for designing wind-uplift resistances for low-slope built-up, polymer-modified bitumen and single-ply membrane roof systems that do not rely on aggregate or paver ballast to provide their wind resistances.

Two-part methodology

ANSI/SPRI WD-1 is divided into two primary parts. The first part addresses how to determine design wind-uplift loads. The second part discusses choosing an appropriate roof system by comparing factored, tested wind-uplift resistance capacities with the design wind-uplift loads determined in the first part.

In ANSI/SPRI WD-1, determining design wind-uplift loads is accomplished using 21 tables based on Building Category II, surface roughness (exposure category), building height (mean roof height) and peak gust wind zone...



To read the article in its entirety, please log in or register (registration is free).

Log in or register for FREE access to this article and other Professional Roofing online content.

Not a professionalroofing.net user?

Register now for free access
  • Full access to every article
  • Online Web exclusive information
  • Photo gallery
  • Breaking news
  • Online classified ads

Already a professionalroofing.net user?

Log in now

User name:

Password:

 


Login help
Click here to have your user name and password emailed to you.




Comments (0) Login to post a comment or rating
There are no comments posted.

NRCA NRCA