simultaneously applies time-varying wind pressure and simulated effects of wind-driven rain on the horizontal building facade. It is ideally designed to conduct testing on wall materials, and construc
tion in [wood](https://n2t.net/99152/h1514), [masonry](https://n2t.net/99152/h1513), and aluminum-glass curtain walls and fenestration.
In Nordenskjöld's climatic classification (1928), the climate of those parts of the world where the average temperature of the warmest month is below 0C. It is equivalent, therefore, to the perpetual
frost climate of W. Köppen (1918), and to C. W. Thornthwaite's frost climate (1931).