Describe elevator hoistways.
What will be an ideal response?
The hoistway is a vertical, fire-resistant enclosed shaft in which an elevator moves. It has a pit at the bottom and openings at each floor. The openings are protected by automated doors controlled by an operating system. Codes typically require that elevator shafts have a 2 hour fire rating and that the opening be protected with doors having a 1 hour fire rating. A metal or concrete deck is required on the top of the hoistway.
You might also like to view...
Gain is best described as the _____.
a. stretching of conduit as it is bent b. distance saved by the arc of a 90° bend c. distance between bends d. hypotenuse of a 90° bend
Which of the following is a common reason for resistance to change?
a. uncertainty b. feelings of loss c. differing perceptions d. All of these are reasons for resistance to change. e. None of these are reasons for resistance to change.
The ________ series has become the most widely used CMOS series
Fill in the blank(s) with correct word
A(n) ____________________ is a measure of the effectiveness of a material as an insulator.
Fill in the blank(s) with the appropriate word(s).