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Abstract
The paper gives results of experiments and calculations concering the safety against wind lift off of loosely laid pavers and insulation boards on flat roofs. The experiments are aimed to derive information concerning the under-element pressurs depending on the external pressure distribution and the wind permeability of the lay consisting of pavers or insulation boards. Theoretical considerations lead to a simple equation for determining the failure wind speed depending on the external pressure, the relative element size and the area weight of the elements. The results of the calculations are given as diagrams which may help the designer to choose the best possible solution when using loosely laid insulation boards as additional thermal insulation or when using pavers as roof ballast.
The paper gives results of experiments and calculations concering the safety against wind lift off of loosely laid pavers and insulation boards on flat roofs. The experiments are aimed to derive information concerning the under-element pressurs depending on the external pressure distribution and the wind permeability of the lay consisting of pavers or insulation boards. Theoretical considerations lead to a simple equation for determining the failure wind speed depending on the external pressure, the relative element size and the area weight of the elements. The results of the calculations are given as diagrams which may help the designer to choose the best possible solution when using loosely laid insulation boards as additional thermal insulation or when using pavers as roof ballast.
Date
0/1990
0/1990
Author(s)
H Gerhardt; C Kramer; K Bofah
H Gerhardt; C Kramer; K Bofah
Page(s)
309-317
309-317
Source
Elsevier Science B.V.
Elsevier Science B.V.
Keyword(s)
wind load; uplift; flat roof; insulation board; pavers
wind load; uplift; flat roof; insulation board; pavers