20 m
30 m
45 m
60 m
C. 45 m
Increases with increase in diameter of bar
Decreases with increase in diameter of bar
Does not depend on diameter of bar
None of the above
Lime stone and clay
Gypsum and lime
Pozzolana
Lime, pozzolana and clay
Aggregates
Cement
Water
All the above
Dams
Massive foundations
R.C.C. structures
All the above
10 kg
12 kg
14 kg
16 kg
About 0.1 N/mm²
Zero
0.3 N/mm² to 0.7 N/mm²
About 1.0 N/mm²
3
4
5
7
Lime stone
Chalk
Laterite
None of these
30 minutes
40 minutes
60 minutes
90 minutes
4 mm
6 mm
8 mm
10 mm
Cement should be mixed for at least one minute
10% of water is placed in the rotating drum before adding dry material
10% of water is added after placing the other ingredients in the drum
All the above
20 %
25 %
30 %
35 %
10 %
20 %
30 %
40 %
Greatest surface area for the given cement and aggregates
Least surface area for the given cement and aggregates
Least weight for the given cement and aggregates
Greatest weight for the given cement and aggregates
Water
Cement
Aggregate
None of these
l/3
l/5
l/7
l/10
100 kg
110 kg
120 kg
130 kg
Residual does not exceed 10% when sieved through IS Sieve No. 9
Soundness varies from 5 to 10 mm
Initial setting time is not less than 30 minutes
Compressive stress after 7 days, is not less than 175 kg/cm2
1.5 and 2.2
2.2 and 1.5
1.5 and 1.5
2.2 and 2.2
Increases workability
Decreases workability
Decreases resistance to weathering
Increases strength
Colour
Strength
Controlling setting time
None of these
Dry
Earth moist
Semi-plastic
Plastic
1500 bags
2000 bags
2500 bags
3000 bags
Is maximum at neutral axis
Decreases below the neutral axis and increases above the neutral axis
Increases below the neutral axis and decreases above the neutral axis
Remains same
0
10
20
30
Soffit level
Window sill level
Floor level
All the above
The least lateral dimension
2 times the least lateral dimension
3 times the least lateral dimension
4 times the least lateral dimension
High percentage of C3S and low percentage of C2S cause rapid hardening
High percentage of C3S and low percentage of C2S make the cement less resistive to chemical attack
Low percentage of C3S and high percentage of C2S contribute to slow hardening
All the above
The least lateral dimension of the member
Sixteen times the smallest diameter of longitudinal reinforcement bar to be tied
Forty-eight times the diameter of transverse reinforcement
Lesser of the above three values
Increased by 10% for bars in compression
Increased by 25% for bars in compression
Decreased by 10% for bars in compression
Decreased by 25% for bars in compression