PRESSURE FACTORS FOR EDGE REGIONS ON LOW-RISE BUILDING ROOFS

Citation
Jd. Ginger et Cw. Letchford, PRESSURE FACTORS FOR EDGE REGIONS ON LOW-RISE BUILDING ROOFS, Journal of wind engineering and industrial aerodynamics, 54, 1995, pp. 337-344
Citations number
6
Categorie Soggetti
Mechanics
ISSN journal
01676105
Volume
54
Year of publication
1995
Pages
337 - 344
Database
ISI
SICI code
0167-6105(1995)54:<337:PFFERO>2.0.ZU;2-5
Abstract
Point and area-averaged pressures are presented for enclosed low rise (height (h)/breadth (b) = 1/3) building roof, based on 1:100 scale win d tunnel measurements obtained in a simulated suburban atmospheric sur face layer. Large magnitude mean and peak suction pressures were measu red close to the leading edges under the separating shear layer. Signi ficantly larger magnitude mean and peak pressures were measured on 0.2 h (wide) by 1.0h (long) rectangular edge strips compared to the pressu res on 1.5h by 1.0h roof sections. Pressure factors of the order of 3. 0 for suction pressures were obtained for these regions which are larg er than code values. However, measured peak area-averaged suction pres sures were significantly smaller than code values.