Roof Wind Speeds: ASCE 7, Uplift Ratings and Warranties

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Webinar On-Demand
Sponsored by Duro-Last®, Inc., MFM, and Versico Roofing Systems
Presented by Brian P. Chamberlain

Learning Objectives:

  1. Understand how wind impacts the roofing assembly.
  2. Describe the changes within the latest version of the ASCE 7 and identify the six basic factors that determine uplift pressure.
  3. Examine the responsibility of the designer using the International Building Code (IBC) in association with the ASCE 7.
  4. Discuss how warranties are related to the IBC and ASCE 7.


This test is no longer available for credit

Does 90 pounds/square-feet of uplift equal 90 mph? Factory mutual rated assembly of 1-90, does it equal 90 mph? Does the building code require a warranty wind speed of 90 mph? An ongoing issue that frustrates the industry as a whole is the confusion in how a roofing assembly will meet the building code, will meet an uplift rating and be warranted based on local wind speeds. Since local wind speed is the common factor in all three, an understanding of how wind speed is used associated to each needs to be clarified. This webinar will focus on the process, from uplift to warranty.

Construction worker on roof.

Brian P. Chamberlain Brian Chamberlain has been with Carlisle Construction Materials since 1987. He graduated from the University of Wisconsin at Milwaukee, where he earned a Bachelor’s Degree in the Science of Architectural Design. Since joining Carlisle, Brian has been assisting architects, consultants and specifiers on developing special projects. He has been involved in numerous technological presentations throughout the U.S., Canada and overseas in South Korea and China, offering information on unique roofing design issues. He has also written three industry papers which were presented at the 27th, 29th and 31st RCI International Conventions. Brian is a member of the RCI, CSI and has 30 years of experience in the roofing industry.

“Duro-last “MFM “Versico


Originally published in May 2017