A built-up roof (BUR) membrane consists of several plies of felt, where each successive felt is laid over a mopping of asphalt. Does the performance of a BUR membrane depend on the number of plies? What is the maximum and minimum number of plies used in a BUR membrane?
What will be an ideal response?
The greater the number of plies in a BUR membrane, the more durable it is. The maximum number of plies is generally five and the minimum number of plies is three.
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The attributes of a model that may change are sometimes called ____________________.
Fill in the blank(s) with the appropriate word(s).
?In a four stroke, four cylinder engine, how many degrees must the crankshaft turn before the next cylinder in the firing order is fired?
What will be an ideal response?
During a crisis, messages should be delivered clearly, repeatedly, and:
a. by one person b. by a different person each time c. in an aggressive tone of voice d. only via press release
After a low of 300 in 1900, the population is now:
A. 100,000 B. 250,000 C. 500,000 D. 2 million