Type PVC conduit and Type RTRC conduit can be used when first surrounded by at least ____ of concrete, followed by a minimum cover of 24 in. (top of conduit to grade).
A. 2 in.
B. 4 in.
C. 8 in.
D. 12 in.
Answer: A
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The force F goes through the origin of the xy-coordinate system and makes an angle ???? with the horizontal, as shown in Figure 12.25. Points A and B are at the coordinates indicated on the figure in units of feet. Calculate the moment of F about points A and B, assigning positive values to counterclockwise moments.
F = 4.2(10)² lbf
???? = 45°
 FIGURE 1.png)
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What will be an ideal response?
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