Abstract

Building envelope performance can be predicted through field investigation, laboratory investigation, modeling, or a combination of these. Large scale testing in the laboratory has been limited because of cost, but it is important in validating mathematical or empirical models since the impact of different variables on the envelope performance can be studied as other variables can be readily and reliably kept constant. In the context of a research project in collaboration with nine companies, three universities and the government, a two-story test hut, with overall dimensions of 16 ft 8 inches in length, 12 ft 5 inches in width, and 19 ft 11�$1�