In masonry foundations, steps in footings are usually in increments of ____ inches to conform to standard concrete block sizes.

A. 4
B. 5
C. 6
D. 8


Answer: D

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Why are humidifiers usually installed in the supply duct of a gas-fired forced air heating system?

What will be an ideal response?

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For the beam shown below, draw the shear and moment curves label the maximum values of shear and moment, locate points of inflection, and sketch the deflected shape.

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Quenched and tempered steels:

A) Utilize low-hydrogen electrode welding procedures B) Generally require elevated preheat C) Are supplied in heat-treated condition D) All of the above

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If 4.7 k?, 2.2 k? and 1.2 k? resistors are wired in series, the total resistance is 8.7 k?

Indicate whether the statement is true or false

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