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.Management Sciences
Category: Building Materials and Construction
The internal size of mould used in brick preparation is__________________?
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A. equal to the size of a fully burnt brick
B. smaller than the size of a fully burnt brick
C. greater than the size of a fully burnt brick
D. none of the above
The basic purpose of a retarder in concrete is_____________?
A. to increase the initial setting time of cement paste in concrete
B. to decrease the initial setting time of cement paste in concrete
C. to render the concrete more water tight
D. to improve the workability of concrete mix
As compared to stretcher course, the thickness of joints in header course should be_____________?
A. less
B. more
C. equal
D. equal or more
According to IS specifications, the compressive strength of ordinary portland cement after three days should not be less than________________?
A. 7 MPa
B. 11.5 MPa
C. 16 MPa
D. 21 MPa
The bearing capacity of a water logged soil can be improved by_____________?
A. compacting the soil
B. draining the soil
C. increasing the depth of foundation
D. grouting
Couple close roof is suitable for maximum span of________________?
A. 2.5 m
B. 3.5 m
C. 4.5 m
D. 5.5 m
The slump recommended for mass concrete is about_______________?
A. 25 mm to 50 mm
B. 50 mm to 100 mm
C. 100 mm to 125 mm
D. 125 mm to 150 mm
In any good staircase, the maximum and minimum pitch respectively should be_____________?
A. 90° and 0°
B. 75° and 30°
C. 60° and 10°
D. 40° and 25°
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