What is the weight in pounds-per-square-foot of lightweight (light aggregate) concrete block?
What will be an ideal response?
Hollow Concrete Block (Light Aggregate) has a weight of 21 to 55 pounds per square foot depending on the block width. For a 4" block, the weight is 21 pounds per square foot; for a 6" block, the weight is 30 pounds per square foot;
for an 8" block, the weight is 38 pounds-per-square-foot; and for a 12" block, the weight is 55 pounds per square foot.
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Round sheet metal ductwork should be:
A) Fastened and sealed with duct tape. B) Fastened with sheet metal screws and sealed with mastic. C) Fastened with duct tape and sealed with mastic. D) Fastened and sealed with mastic.
In theory, a mechanical seal should last until _____
A) the spring wears out B) the seal faces separate C) 40,000 shaft revolutions D) the carbon face has worn away
Student A says that if a transmission uses a comfort power switch, the shift will raise the shift points when it is in the power position. Student B says that if a transmission uses a comfort power switch, it will produce firmer shifts when it is in the comfort position. Who is correct?
A. Student A B. Student B C. Both A and B D. Neither A nor B