Building Science

Simplifying the Complicated Process of Wind Design for Roof Systems

With the latest version of ASCE 7, Minimum Design Loads For Buildings and Other Structures, wind design for roof systems has become much more challenging for roof system designers and roofing contractors. This paper explores the similarities and differences between the three relevant versions of ASCE 7 and the roofing industry-developed methods to determine loads. It also provides insights regarding the application of the traditional Factor of Safety in various design methods, as well as design enhancements for improved long-term performance.Read the full paper here: Simplifying the Complicated Process of Wind Design for Roof Systems.

Physical Testing for Wind Resistance of Retrofit Single Ply Over Metal Panel Systems

Wind uplift is a primary concern when installing a retrofit single-ply roof system (RSPRS) over a structural metal panel roof. ASTM E 1592 physical testing was performed on three test roof assemblies in order to determine the wind uplift resistance of an RSPRS installed over existing structural metal panel roof systems fastened directly into purlins. This paper presents the findings and conclusions of that analysis.Read the full paper Physical Testing for Wind Resistance of Retrofit Single-Ply Roof Systems Over Structural Metal Panel Roof Systems.View more white papers from GAF on our Architect & Specifier Education Resource Page.

GAF and the Design Community: Bridging the Gap with the Designer's Collective

Prevailing Winds and Prevailing Codes: A Summary of Roof Related ASCE 7-22 Changes