On taking wind-driven rain and capillary characteristics of materials into account while calculating dampness of shielding structures for buildings

Abstract

The first aim of this paper was to analyse some basic methods of determining the thickness of streams of rain water falling diagonally on vertical surfaces of shielding structures. It was shown that for determining the horizontal component of wind-driven rain, the standard ISO method yields the best results for low buildings, while in the case of buildings of the tower type, the best results gives the CFD model. The main aim of this paper was to propose a method of determining the thickness of streams of moisture absorbed by vertical surfaces of shielding structures exposed to rain falling diagonally. The developed method takes into account the horizontal component of wind-driven rain, the water sorption coefficient, the actual material humidity and the material humidity in the capillary saturation state.