Snow loading and wind/sun/shade studies Article

cited authors

  • Irwin, PA; Gamble, SL

fiu authors

abstract

  • A method was developed which makes use of the combined potential of both wind tunnel and computer simulation techniques to make quantitative predictions. The essentials of the method developed were (a) determine the detailed mean velocity distribution close (1 m full scale) to the roof surface for a number of wind directions using a wind tunnel model; (b) supplement this with qualitative particle drifting tests and tests of snowfall build-up under various wind conditions; (c) divide the roof into area elements and use the velocity distribution and snow drifting flux relationships to compute the build-up or depletion of snow in each element in a time step fashion; and (d) incorporate into the computer program the change of wind speed and direction, snowfall, melting rate and rainfall at each time step and compute histories of snow accumulation on the roof.

publication date

  • June 1, 1989

volume

  • 35

issue

  • 3