Explain how air leakage through a building envelope can be reduced.
What will be an ideal response?
Air leakage is a function of two factors: (i) leakage area and (ii) air pressure difference across the building envelope caused by wind and air temperature difference between the inside and outside. The second factor is not under our control. Thus, the only way to reduce air leakage is to reduce the leakage area, attained by sealing the gaps in the building envelope through sealants, gaskets and weather strips.
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Condensation on pipes occurs when a cold surface is exposed to _____.
a. warm, moist air b. cold, dry air c. warm, dry air d. cold, moist air
__________ is the liquid that separates from the solids when milk coagulates
Fill in the blank(s) with correct word
A brick wall has 6, 20" wide pilaster. There is one pilaster at each end and four evenly spaced along the face of the wall. Each wall section between the pilasters is 8' long. What is the total length of the wall in feet?
What will be an ideal response?
An on/off control system is undesirable because it usually is relatively expensive.
Answer the following statement true (T) or false (F)