Fire-escape stairs in contemporary buildings are generally constructed of prefabricated, U-shaped stairs with an intermediate landing between adjacent floors. How are they supported?
What will be an ideal response?
They are prefabricated in two parts. One part consists of the landing frame and the upper flight. The second part consists of the lower light. The landing frame is hung from the upper floor beam, while the upper flight stringers are welded to the upper floor beam. The stringers of the lower flight are then welded to the landing frame and the lower floor beam. The enclosure walls of the stair are constructed after the stairs on all stories have been constructed.
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You have a failed 24V transformer in a circuit requiring an amperage of 2.5A. You can replace this transformer with a new one rated at _____.
a. 40VA b. 50VA c. 54VA d. 75VA
T-budding is accomplished when the rootstock is in active growth rather than in the dormant (resting) stage, either in winter or late fall
Indicate whether the statement is true or false
The rural/urban interface:
A. allows the best land for growing plants to be reserved for agricultural purposes. B. are changes as populations move outward from the central urban areas. C. are nowadays easily seen as a distinct line in aerial views of cities and towns. D. allows more of the urban population to gain awareness of agricultural practices.
?How much resistance is in a 12 volt circuit that is drawing 4 amperes?
A. ?.333 ohms B. ?3 ohms C. ?4.8 ohms D. ?48 ohms