June 2011

Concerns with ASCE 7-10 | Tech Today

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Concerns with ASCE 7-10

How will implementing ASCE 7-10 affect the roofing industry?

by Mark S. Graham
1 person has posted a comment

The 2010 edition of ASCE 7, "Minimum Design Loads for Buildings and Other Structures," has been published and incorporated into the International Building Code, 2012 Edition. ASCE 7-10 contains significant revisions to the standard's previous edition, ASCE 7-05. Several of these changes significantly will affect the wind design of buildings' exterior envelopes, including roof systems. Therefore, you should be familiar with ASCE 7-10 and its changes.

Comparing standards

In ASCE 7-10, wind-load requirements are provided in Chapters 26-31. In ASCE 7-05, wind-load requirements were provided in Chapter 6.

ASCE 7-10 provides six primary design approaches applicable to roof systems, as well as a wind tunnel testing method, compared with three design methods contained in ASCE 7-05. ASCE 7-10 provides simplified design approaches for roof heights of 160 feet or less; ASCE 7-05 applied the simplified approach to roof heights of...

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Comments (1) Login to post a comment or rating

Posted by Michael SDE on 3/13/2012, User rating 
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In combining loads, it appears that the new ASCE 7-10 uses a 0.7 factor which reduces the increase of Kansas City values to +14% and actually decreases the St. Petersburg values -7%.