Abstract
Wind-tunnel model tests of roof-insulation systems have been carried out for flat-roofed buildings, and mechanisms responsible for wind damage identified. The results apply to systems that use flat, closely spaced elements, such as insulation boards or pavings slabs, whose thickness is much less than their length or width. Lifting and overturning of the system elements occurred at windspeeds well below typical design values. The static pressure distribution produced by the wind flow over the outer surface of the system gives rise to small flows through the joints between the elements and under them. A pressure distribution is thus established under the elements. This pressure distribution is related to, but different from, that on the outer surface, and in certain areas of the roof-top the pressure difference produces uplift on the elements that can be greater than their weight at design windspeeds. This occurs even when all surfaces are smooth and flat and joints are tight-fitting.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Wind Engineering and Industrial Aerodynamics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
