Abstract
ABSTRACTThe large temperature differentials between inside and outside spaces in Alaska (>100°F) has triggered the use of thermal‐break details for envelope point protrusions for decades, mostly to prevent condensation on interior structural members. This has been done, however, using engineering judgment, and, prior to this study, no experimental or computational analysis has been conducted on the effectiveness of these details.This study outlines a series of thermal and structural tests of thermal bridges and thermal break details for steel sections protruding through the building envelope such as for canopies or rooftop mechanical units. The results of the experimental data will be correlated with thermal finite‐element models to provide insight on the modelling parameters. The results show that some details, while decreasing the potential for condensation, actually increases the overall heat flow through the detail, when compared to the control condition with no thermal break.
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