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X-WR-CALNAME:IIBEC
X-WR-CALDESC:IIBEC is an international association of building envelope consultants. Members specialize in design, investigation, repair, and management of roofing, exterior wall, and waterproofing systems.
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DTSTART:20260308T030000
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DTSTART:20261101T010000
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BEGIN:VEVENT
CLASS:PUBLIC
UID:MEC-1008fbb2c94f286909e8d9db51540119@iibec.org
DTSTART;TZID=America/New_York:20200614T113000
DTEND;TZID=America/New_York:20200614T124500
DTSTAMP:20200610T100931Z
CREATED:20200610
LAST-MODIFIED:20200610
PRIORITY:5
SEQUENCE:0
TRANSP:OPAQUE
SUMMARY:Physical Testing for Wind Resistance of Retrofit Single-Ply Roof Systems Over Structural Metal Panel Roof Systems
DESCRIPTION:Presented by Mohamed A. ElGawady, PhD, of Missouri University of Science and Technology and James R. Kirby, AIA of GAF\n\n\n\n\nRetrofit single-ply roof systems (RSPRS) are increasingly being used to re-cover existing structural metal panel roofs. One of the primary concerns when an RSPRS is installed over a structural metal panel roof is wind uplift. Of significant concern is when an RSPRS is mechanically fastened into every other purlin instead of every purlin. The “every other” type of installation changes the wind-resistance load path of the metal building. This every other load path seemingly doubles the load on the purlin-to-main-frame connection for the purlins to which the RSPRS is attached.\nASTM E1592 physical testing has been performed on three test roof assemblies—each consisting of a mechanically attached TPO with flat stock and flute-fill polyisocyanurate over a 24-in.-wide structural metal panel roof system. Each RSPRS has different fastener patterns, which resulted in different wind uplift resistance values. The tests were heavily monitored to obtain deflection measurements and stress/strain information for multiple components within the assembly.\nThe results from an analysis of the three physical tests will be presented. The results from physical testing (small and large scale) were used to develop finite element analysis (FEA) modeling of alternative fastening patterns, and these conclusions will be presented.\n\n\n\n\n
URL:https://iibec.org/iibec-events/physical-testing-wind-resistance/
CATEGORIES:Convention
LOCATION:Virtual Convention
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