New! Asphalt Shingle Guidelines for Residential Contractors

Wind induced suctions on flat roof corners: The effect of parapet revisited

To obtain a copy of a specific publication, users should contact the publication's publisher directly.

Abstract
The influence of tap location on the pressure coefficients measured is clearly higher for flat roofs without parapet and decreases with increasing parapet height. For buildings with no parapets, points very close to the roof edge at the corner may experience very severe suctions that would have remained undetected with a conventionally designed and instrumented model. On the other hand, such high suctions affect only a very small portion of the roof corner because of their high gradient of reduction with distance from the edge. The measured values are generally consistent with Standard provisions. For the low building, the stipulations are near the measured local suctions, but somewhat underestimate the area averated loads. For the talle building data show higher suctions than the provision for no parapets or low parapets.
Date
6/1993
Author(s)
T Stathopoulos; V Munteanu-Badian
Page(s)
739-748
Keyword(s)
wind induced suction; flat roof; parapet wall; pressure coefficient


Note: Documents in this section are provided as Adobe Acrobat PDF files. In order to print and view PDF files, the Adobe Acrobat Reader software/plugin, which runs on Microsoft Windows, Macintosh, OS/2 and various versions of UNIX, must be installed on your computer. Adobe Acrobat Reader is available for download as freeware from Adobe Acrobat's website. Please note that the resolution of on-screen versions is not as high as printed versions of PDF files.

Advertisement

Subscribe for Updates Join 25,000+ roofing professionals following NRCA

Subscribe to NRCA