Reduces the strength
Increases the strength
Does not change the strength
All of the above
A. Reduces the strength
2 %
4 %
6 %
10 %
Wetter mix
Larger proportion of maximum size aggregate
Coarser grading
All the above
Voids in coarse aggregates are filled by fine aggregates
Voids in fine aggregates are filled by the cement paste
Volume of fine aggregates is equal to total voids in coarse aggregates plus 10% extra
All the above
Rounded spherical
Irregular
Flaky
None of these
At the middle of the wall
At the edge of the wall
Halfway between the middle and edge of the wall
At a distance equal to effective depth of footing from the edge of the wall
Less than 12
Less than 18
Between 18 and 24
More than 24
To reduce the tensile stresses likely to be developed due to evaporation of water
To minimise the change in the dimensions of the slab
To minimise the necessary cracking
All the above
Only (ii) is correct
(i) and (ii) are correct
(iii) and (iv) are correct
Only (iv) is correct
1100° and 1200°C
1200° and 1300°C
1300° and 1400°C
1400° and 1500°C
150 × 150 × 500 mm
100 × 100 × 700 mm
150 × 150 × 700 mm
100 × 100 × 500 mm
1 : 3 : 6 mix
1 : 1 : 2 mix
1 : 2 : 4 mix
1 : 1.5 : 3 mix
15,900 litres
16,900 litres
17,900 litres
18,900 litres
3.5 m
4 m
4.5 m
5 m
Increasing the depth of beam
Using thinner bars but more in number
Using thicker bars but less in number
Providing vertical stirrups
24 to 48 hours
3 days
7 days
14 days
Construction joints in columns are provided a few cm below the junction of beam
Construction joints in columns are provided at the bottom hunching
Construction joints in beams and slabs are provided within middle third
All the above
Effective depth of slab from periphery of column/drop panel
d/2 from periphery of column/capital/ drop panel
At the drop panel of slab
At the periphery of column
30 %
40 %
50 %
60 %
0.207 l
0.293 l
0.707 l
0.793 l From the driving end of pile which rests on the ground
2.0 to 3.5
3.5 to 5.0
5.0 to 7.0
6.0 to 8.5
Rapid rate during the first few days and afterwards it continues to increase at a decreased rate
Slow rate during the first few days and afterwards it continues to increase at a rapid rate
Uniform rate throughout its age
None of these
Area of each aggregate pile should be large
Height of each aggregate pile should not exceed 1.50 m
Aggregate pile should be left for 24 hours before aggregates are used
All the above
Only (i)
(i) and (ii)
(i) and (iii)
All (i), (ii) and (iii)
Membrane method
Ponding method
Covering surface with bags
Sprinkling water method
Where B.M. and S.F. are small
Where the member is supported by other member
At 18 m apart in huge structures
All the above
Calcium chloride acts as a retarder
Calcium chloride acts as an accelerator
Gypsum (calcium sulphate) acts as a retarder
Both (b) and (c)
0.03 %
0.1 %
0.3 %
3 %
20 kN/cm²
200 kN/cm²
200 kN/mm²
2 × 106 N/cm²
Low-heat Portland cement
Rapid hardening Portland cement
Portland blast slag cement
Portland pozzolana cement
0.37 fy
0.57 fy
0.67 fy
0.87 fy