Quantitative studies driving rain exposure on a vertical building fa?ade in an urban area
Zhu, D.
1995
Thesis, M.A.Sc. (Building), Centre for Building Studies, Concordia University, Supervisor: P. Fazio
Zhu, D., (1995), Quantitative studies driving rain exposure on a vertical building fa?ade in an urban area, Thesis, M.A.Sc. (Building), Centre for Building Studies, Concordia University, Supervisor: P. Fazio.
| Abstract: |
| A computation methodology is developed to derive quantitatively the driving rain exposure of vertical building facades. This methodology is helpful in determining long term and extreme exposure conditions by analyzing local climatological data. This methodology can be used to derive numerical values of rain precipitation, impact intensity, impact frequency and impact duration on a vertical surface of a building. These results provide a more realistic picture of the exposure to driving rain as compared to the one provided by the existing Driving Rain Index which is non-quantitative in nature. The quantitative driving rain exposure for 15 major Canadian cities is derived by using this methodology and by making use of the climatological data recorded at local meteorological stations. These are presented in the form of rose diagrams. These diagrams provide useful information to Canadian building engineers and architects so that they may develop appropriate design and specifications for building envelopes to withstand the prevailing conditions. Currently, the driving rain index derived from suburban meteorological record is used as the measure of driving rain exposure throughout the city. In reality, this index is attenuated by various urban topographies. An attenuation coefficient (C$/sb[/phi]$) is developed in this thesis to arrive at more realistic indices for buildings within the city. The attenuation coefficient can also be used to compute the quantitative driving rain exposure of a building located in an urban area. |
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