Standard test method to determine the performance of tiled roofs to wind-driven rain
Keywords:roof tightness, tiled roof performance, winddriven rain, wind tunnels
The extent to which roof coverings can resist water penetration from the combination of wind and rain, commonly referred to as wind driven rain, is important for the design of roofs. A new project of European Standard prEN 15601 (1) specifies a method of test to determine the performance of the roof covering against wind driven rain.
The combined action of wind and rain varies considerably with geographical location of a building and the associated differences in the rain and wind climate. Three windrain conditions and one deluge condition covering Northern Europe Coastal, Central Europe and Southern Europe are specified in the project standard, each subdivided into four wind-speeds and rainfall rates to be applied to the test. The project does not contain information on the level of acceptable performance.
(1) prEN 15601 Hygrothermal performance of buildings. Resistance to wind-driven rain of roof coverings with discontinuously laid small elements. Test method (Nov. 2006).
(2) Blocken, B., Carmeliet, J.: ``A review of wind-driven rain research in building science´´. J. Wind Eng. and Ind. Aerodinamics, vol. 92,13 (2004) págs. 1079/1130.
(3) Cobos Hernández, F. y Marín Andrés, F.: ``Problemática en tejados y fachadas de ladrillo visto´´. Arte y Cemento, 1.889 (2000) págs. 92/6. (4) Owen, P.R.: ``Buildings in the wind´´. Quarterly J. Roy. Met. Soc., 97, 114 (1971), págs. 396/413.
(5) Blocken, B., Carmeliet, J.: ``On the accuracy of wind-driven rain measurement in buildings.´´ Building and Env. vol. 14,12 (2006) págs. 1798/1810.
(6) Bresson, J. : ``La soufflerie du Cerib: Premiers resultats obtenus sur le compotement des couvertures.´´ J. Wind Eng. and Ind. Aerodinamics. vol. 23 (1986) págs. 283/296.
(7) Lacey, R.E.: ``Climate and building in Britain´´, BRE report (1977).
(8) Blocken, B., Carmeliet, J.: ``High-resolution wind-driven rain measurements on a low-rise building—experimental data for model development and model validation.´´ J. Wind Eng. and Ind. Aerodinamics. vol. 93,12 (2005), págs. 905/928.
(9) Best, A.C.: ``The size distribution of raindrops, Quarterly J. Roy´´. Met. Soc. 76, (1950), págs. 16-36.
(10) Laws, J.O. & Parsons, D.A.: ``Relation of raindrop size to intensity.´´ Amer. Geophys. Union Trans. 24 part II (1943) págs. 453-460.
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