Which cover board is commonly used with hot-mopped built-up and modified-bitumen roofs and what is its thickness?
What will be an ideal response?
Perlite board or asphalt-saturated fiberboard, thickness of 3/4 in. to 1 in.
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Link counterbore damage usually results from a _______________failure.
Fill in the blank(s) with the appropriate word(s).
For an interest rate of 1% per quarter, determine the nominal interest rate per (a) semiannual period, (b) year, and, (c) 2 years.
What will be an ideal response?What will be an ideal response?
What advantage is there to maintaining a negative pressure on the heat exchanger?
A) The vent will not work unless the heat exchanger is at a negative pressure. B) The negative pressure helps draw in return air from the house, increasing efficiency. C) Safety; it ensures combustion products do not leak out into the air stream. D) Combustion air can only be drawn into the oil burner if a negative pressure is maintained.
Dropping the hip is required because the top corners of a hip rafter will sit ________ the plane of the roof
A) Slightly lower than B) Slightly higher than C) Significantly lower D) At the same level as