If a concrete member is not a precast concrete member, can it prestressed? Explain.
What will be an ideal response?
Yes, by posttensioning, which is done in cast-in-place concrete members after the concrete has gained sufficient strength.
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When using a penetrating stain, an area that has been stained too dark can be lightened by _____.
a. leaving it out in the sun b. wiping it with a turpentine-saturated cloth c. washing it with detergent d. lightly sanding it and restaining
Which alcohol is dangerous (toxic)?
A) Methanol B) Ethanol C) Both ethanol and methanol D) Neither ethanol nor methanol
Match the fire extinguisher class in the second column with the type of fire in the first column
A. Combustible metals B. Flammable liquids C. Ordinary combustible D. Electrical fires 1. Class A 2. Class B 3. Class C 4. Class D What will be an ideal response?
List five precautions to be taken when using cranes and hoists in underground constructions
What will be an ideal response?