Which of the two deep foundation members (piles or piers) must be closely spaced and three or more of them joined together with a cap over them? Give reason for your answer.
What will be an ideal response?
Piles. Because piles are driven into ground, they are slender members. Therefore, the load-bearing capacity of an individual pile is small. A (concrete) pile cap integrates multiple piles into one foundation element.
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By energizing a coil of the relay, called the latch coil, the latching relay operates. A second coil on the relay, the unlatch coil, must be energized to return the contacts to their unoperated condition. This arrangement is often referred to as a ____.
a. mechanical latching attachment b. memory relay c. locking relay d. solid-state timing relay
Technician A says that biodiesel has a short shelf life compared with petroleum sourced diesel fuel. Technician B says that degraded biodiesel can result in costly fuel problems. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
What is electricity? What is necessary for electricity to flow through a circuit?
What will be an ideal response?
The ____ roof is a simple sloped roof with no ridge. It is much like one side of a gable roof.
A. hip B. mansard C. gambrel D. shed