Wind and Structures

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Towards guidelines for design of loose-laid roof pavers for wind uplift

  • Mooneghi, Maryam Asghari (Advanced Technology and Research, Arup) ;
  • Irwin, Peter (Department of Civil and Environmental Engineering, International Hurricane Research Center, Florida International University) ;
  • Chowdhury, Arindam Gan (Department of Civil and Environmental Engineering, International Hurricane Research Center, Florida International University)
  • Received : 2014.06.03
  • Accepted : 2015.11.02
  • Published : 2016.02.25
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Abstract

Hurricanes are among the most costly natural hazards to impact buildings in coastal regions. Building roofs are designed using the wind load provisions of building codes and standards and, in the case of large buildings, wind tunnel tests. Wind permeable roof claddings like roof pavers are not well dealt with in many existing building codes and standards. The objective of this paper is to develop simple guidance in code format for design of loose-laid roof pavers. Large-scale experiments were performed to investigate the wind loading on concrete roof pavers on the flat roof of a low-rise building in Wall of Wind, a large-scale hurricane testing facility at Florida International University. They included wind blow-off tests and pressure measurements on the top and bottom surfaces of pavers. Based on the experimental results simplified guidelines are developed for design of loose-laid roof pavers against wind uplift. The guidelines are formatted so that use can be made of the existing information in codes and standards such as American Society of Civil Engineering (ASCE) 7-10 standard's pressure coefficients for components and cladding. The effects of the pavers' edge-gap to spacer height ratio and parapet height to building height ratio are included in the guidelines as adjustment factors.

Keywords

Acknowledgement

Supported by : National Science Foundation (NSF)

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