How is ductwork location affected by solid wood floor joists?
What will be an ideal response?
Wood joists may not be cut to allow ducts to pass through. The duct must drop down below the floor joists.
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Most metal stairways _____.
a. require little or no fabrication b. solvent welded c. are welded d. extruded
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The ____ value of an alternating current will produce the same heating effect as a specific value of a steady direct current.
A. conversion B. instantaneous C. effective D. average
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Coal was formed about 300 million years ago during a period of time called the ____ period
A) Monolithic B) Crustation C) Carboniferous D) none of these
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Is soil composition that is about 30% pore space and 70% solid material considered good?
Indicate by YES (Y) or NO (N).
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