All concrete is to be machine mixed in an approved mixer with a water metering device. Concrete is to reach a compressive strength of 2500 psi after ____ days.
A. 14
B. 21
C. 25
D. 28
Answer: D
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When using a dynamometer to break in a set of rings on a rebuilt diesel engine, what is the minimum period the engine should be run at maximum power at rpms within its torque rise profile?
A. five minutes B. ten minutes C. twenty minutes D. forty minutes
The recommended surface finish for precision bearing applications on shafts over 2 in. diameter is (in microinches):
a. 16 b. 32 c. 63 d. 125
Name the material that is corrosion resistant, lightweight, easily cast, conductive of heat and electricity, may be easily extruded, and is very malleable.
What will be an ideal response?
Given a set of steps with standard-size bricks used to cover the riser and tread surfaces of a flight of concrete stairs if each tread measures 12" deep by 48" wide and each riser is 8" high, what is the area in square feet of four treads? (Refer to the diagram on page 63 in the book.)
What will be an ideal response?