DM G+1 ACTUAL FINALS QUESTIONS AND
ANSWERS SET A+
✔✔Contractors use blankets over fresh concrete to ____
Increase evaporation
Reduce evaporation
Be rapid harden
Avoid sulphate attack - ✔✔Reduce evaporation
✔✔The density of lightweight concrete is ____ Kg/m3
1000
2000
300
1300 - ✔✔1300
✔✔How many cube samples required for 110cum concrete on a single day?
18
12
9
6 - ✔✔6
✔✔Adding more water to concrete mix its workability ____
Decrease
Remain same
Increase
No effect - ✔✔Increase
✔✔Density of ACC block is _____ Kg/m3
500
550
700
600 - ✔✔600
,✔✔Compaction of concrete is done to _____
Increase strength
Increase durability
Remove air
All are required - ✔✔All are required
✔✔Proper curing of concrete should be continued for ____ days.
7
14
10
28 days - ✔✔7 days
✔✔The average strength of cubes at the end of 28 days should be ____
Greater than fc' by 15%
Greater than or equal to fc'
Equal to or less than fc' by 15%
Greater than fc' by 1.15 times - ✔✔Greater than or equal to fc'
✔✔Compaction of concrete is done to ____
Increase strength
Increase durability
Remove air
All of above - ✔✔All of above
✔✔When casting if the temperature of concrete mix is above 32C0, than how should
you bring the temperature of the mix down to 32 or less?
Adding water
Adding fly ash
Adding silica
Adding ice - ✔✔Adding ice
✔✔Structural element that holds the earth retaining wall is ____
Stem
Shear key
Foundation (toe & heel)
Toe - ✔✔Foundation (toe & heel)
✔✔Minimum amount of steel required in normal column is ____
2%
3%
4%
1% - ✔✔1%
, ✔✔Amount of steel in flat slab is _____ Kg/m3
80-100
200
120
160-185 - ✔✔160-185
✔✔What is the effect of corrosion in reinforcement on RCC element _____
Damage of concrete element
Cracking of the element
Deflection become more than normal
All of above are correct - ✔✔All of above are correct
✔✔Concrete is __________
Weak in compression and strong in tension
Strong in compression and strong in tension
Strong in compression but weak in tension
Enough strong in tensile strength for normal loads - ✔✔Strong in compression but weak
in tension
✔✔The correct lapping location in beam is ________
Middle in top and middle in bottom bars
Extreme middle third in top and at support in bottom layers
Middle in bottom and at support at top
Anywhere is correct. - ✔✔Extreme middle third in top and at support in bottom layers
✔✔What is the thickness to which the soil is backfilled in layers and compacted?
600mm
400-500mm
150-200mm
250-300mm - ✔✔250-300mm
✔✔Density of water is ___________Kg/m3
800
900
1200
1000 - ✔✔1000
✔✔Concrete beam is reinforced to increase ____
Strength
Compression
Serviceability
Tension - ✔✔Tension
✔✔The clear cover given to footing is _________
ANSWERS SET A+
✔✔Contractors use blankets over fresh concrete to ____
Increase evaporation
Reduce evaporation
Be rapid harden
Avoid sulphate attack - ✔✔Reduce evaporation
✔✔The density of lightweight concrete is ____ Kg/m3
1000
2000
300
1300 - ✔✔1300
✔✔How many cube samples required for 110cum concrete on a single day?
18
12
9
6 - ✔✔6
✔✔Adding more water to concrete mix its workability ____
Decrease
Remain same
Increase
No effect - ✔✔Increase
✔✔Density of ACC block is _____ Kg/m3
500
550
700
600 - ✔✔600
,✔✔Compaction of concrete is done to _____
Increase strength
Increase durability
Remove air
All are required - ✔✔All are required
✔✔Proper curing of concrete should be continued for ____ days.
7
14
10
28 days - ✔✔7 days
✔✔The average strength of cubes at the end of 28 days should be ____
Greater than fc' by 15%
Greater than or equal to fc'
Equal to or less than fc' by 15%
Greater than fc' by 1.15 times - ✔✔Greater than or equal to fc'
✔✔Compaction of concrete is done to ____
Increase strength
Increase durability
Remove air
All of above - ✔✔All of above
✔✔When casting if the temperature of concrete mix is above 32C0, than how should
you bring the temperature of the mix down to 32 or less?
Adding water
Adding fly ash
Adding silica
Adding ice - ✔✔Adding ice
✔✔Structural element that holds the earth retaining wall is ____
Stem
Shear key
Foundation (toe & heel)
Toe - ✔✔Foundation (toe & heel)
✔✔Minimum amount of steel required in normal column is ____
2%
3%
4%
1% - ✔✔1%
, ✔✔Amount of steel in flat slab is _____ Kg/m3
80-100
200
120
160-185 - ✔✔160-185
✔✔What is the effect of corrosion in reinforcement on RCC element _____
Damage of concrete element
Cracking of the element
Deflection become more than normal
All of above are correct - ✔✔All of above are correct
✔✔Concrete is __________
Weak in compression and strong in tension
Strong in compression and strong in tension
Strong in compression but weak in tension
Enough strong in tensile strength for normal loads - ✔✔Strong in compression but weak
in tension
✔✔The correct lapping location in beam is ________
Middle in top and middle in bottom bars
Extreme middle third in top and at support in bottom layers
Middle in bottom and at support at top
Anywhere is correct. - ✔✔Extreme middle third in top and at support in bottom layers
✔✔What is the thickness to which the soil is backfilled in layers and compacted?
600mm
400-500mm
150-200mm
250-300mm - ✔✔250-300mm
✔✔Density of water is ___________Kg/m3
800
900
1200
1000 - ✔✔1000
✔✔Concrete beam is reinforced to increase ____
Strength
Compression
Serviceability
Tension - ✔✔Tension
✔✔The clear cover given to footing is _________
