When sheet metal straps are used to suspend fiberglass duct, what gauge and size of metal is required?
a. 22-gauge metal; 1" wide minimum
b. 28-gauge metal; 1" wide minimum
c. 22-gauge metal; 1-1/2" wide minimum
d. 28-gauge metal; 1-1/2" wide minimum
a
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This roof is similar to a gambrel roof, but has the angled lower roof on all four sides rather than just two, and can be used to help hide the height of an entire level of a structure:
A. mansard B. shed C. gable D. Dutch hip E. gambrel
To insure accurate testing, the best material to use for connecting lines to the vacuum pump and gauge set is ____.
A. light flexible hose B. heavy duty rubber gauge line C. copper tube D. garden hose