Tech Today

A new wind design standard

SPRI has updated its wind design standard for ballasted single-ply roof systems

Rate this article

Late in 2008, SPRI updated ANSI/SPRI RP-4, "Wind Design Standard for Ballasted Single-ply Roofing Systems." The updated edition builds on the standard's 1988 and 2002 editions and includes two significant changes.

ANSI/SPRI RP-4-08

The differences between the 2008 edition and the standard's previous editions are the addition of a definition for the term ballast and revision of the description for surface exposure categories that are used with the standard's design tables.

Also, the following statement has been added: "The Design Tables are based on the premise that the ballast will not blow off the roof at the design...

Web exclusive: Click below for more information.
ANSI/SPRI RP-4

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

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:

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