Evaluation Criteria for Modified Base Test Method for Open-Web Steel Joists Supporting a Standing Seam Roof System EC031-2017
open-web steel joists, standing seam roof system, base test methods
This Evaluation Criteria establishes a test method that provides the requirements for quantifying the lateral bracing provided to open-web steel joists from standing seam roof systems to be recognized in an evaluation report independently reviewed by an evaluation service agency under the 2015 and 2012 International Billing Code® (IBC). Basis of recognition is IBC Section 104.11.
Due to the variability in configuration and construction of standing seam roof systems and their attachments, it is not practical to develop a generic method to predict the interaction of a particular standing seam roof system and supporting structure. Therefore, the amount of lateral bracing that the supporting steel joists received from a standing seam roof panel may vary from the fully braced condition to the unbraced condition for a given system.
The test method, herein referred to as the "Modified Base Test Method", is based on the AISI S908-13 "Base Test Method for Purlins Supporting a Standing Seam Roof System". This procedure utilizes the results obtained from assembly tests to predict the lateral bracing to the underlying steel joists provided by multi-span standing seam conditions.
Original Publication Citation
IAPMO EC031-2017. (2017). “Modified Base Test Method for Open-Web Steel Joists Supporting a Standing Seam Roof System.” International Association of Plumbing and Mechanical Officials. Ontario, CA
BYU ScholarsArchive Citation
International Association of Plumbing and Mechanical Officials Uniform Evaluation Services and Sorensen, Taylor, "Evaluation Criteria for Modified Base Test Method for Open-Web Steel Joists Supporting a Standing Seam Roof System EC031-2017" (2017). Faculty Publications. 5543.
International Association of Plumbing and Mechanical Officials Uniform Evaluation Services
Ira A. Fulton College of Engineering
Civil and Environmental Engineering
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