The critical section for finding maximum bending moment for footing under masonry wall is located

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The critical section for finding maximum bending moment for footing under masonry wall is located

A. At the middle of the wall

B. At the edge of the wall

C. Halfway between the middle and edge of the wall

D. At a distance equal to effective depth of footing from the edge of the wall

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Transport of concrete by pumps, is done for a distance of

A. 100 m

B. 200 m

C. 300 m

D. 400 m

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The increased cohesiveness of concrete, makes it

A. Less liable to segregation

B. More liable to segregation

C. More liable to bleeding

D. More liable for surface scaling in frosty weather

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In a spherical dome the hoop stress due to a concentrated load at crown is

A. Compressive everywhere

B. Tensile everywhere

C. Partly compressive and partly tensile

D. Zero

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The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

A. 0.367 x_u

B. 0.416 x_u

C. 0.446 x_u

D. 0.573 x_u

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M 150 grade of concrete approximates

A. 1 : 3 : 6 mix

B. 1 : 1 :2 mix

C. 1 : 2 : 4 mix

D. 1 : 1.5 : 3 mix

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The average permissible stress in bond for plain bars in tension is

A. Increased by 10% for bars in compression

B. Increased by 25% for bars in compression

C. Decreased by 10% for bars in compression

D. Decreased by 25% for bars in compression

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The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

A. Segregation

B. Bleeding

C. Bulking

D. Creep

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The relation between modulus of rupture f_cr, splitting strength f_cs and direct tensile strength f_cl is given by

A. f_cr - f_cs = f_cl

B. f_cr > f_cs > f_cl

C. f_cr < f_cs < f_cl

D. f_cs > f_cr > f_cl

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In order to obtain the best workability of concrete, the preferred shape of aggregate is

A. Rounded

B. Elongated

C. Angular

D. All of the above

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Workability of concrete is inversely proportional to

A. Time of transit

B. Water-cement ratio

C. The air in the mix

D. Size of aggregate

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Segregation is responsible for

A. Honey-combed concrete

B. Porous layers in concrete

C. Surface scaling in concrete

D. All the above

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The bulk density of aggregates, is generally expressed as

A. Tonnes/cubic metre

B. kg/cubic metre

C. kg/litre

D. g/cm3

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The aggregate containing moisture in pores and having its surface dry, is known as

A. Moist aggregates

B. Very dry aggregates

C. Dry aggregates

D. Saturated surface dry aggregate

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Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

A. Deflect downward

B. Deflect upward

C. Deflect downward or upward

D. None of the above

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The rock which is not calcareous, is:

A. Lime stone

B. Chalk

C. Laterite

D. None of these

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Select the incorrect statement

A. The loss of pre-stress is more in pre-tensioning system than in posttensioning system.

B. Pre-tensioning system has greater certainty about its durability.

C. For heavy loads and large spans in buildings or bridges, posttensioning system is cheaper than pre-tensioning system

D. None of the above

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The final operation of finishing floors, is known as

A. Screeding

B. Floating

C. Trowelling

D. Finishing

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Setting time of cement increases by adding

A. Gypsum

B. Hydrogen peroxide

C. Calcium chloride

D. Sodium oxide

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For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

A. 1 : 3 : 6

B. 1 : 1 ½ : 3

C. 1 : 2 : 4

D. 1 : 1 : 2

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According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

A. 0.43 d

B. 0.55 d

C. 0.68 d

D. 0.85 d

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To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

A. 1100° and 1200°C

B. 1200° and 1300°C

C. 1300° and 1400°C

D. 1400° and 1500°C

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For an ordinary Portland cement

A. Residual does not exceed 10% when sieved through IS Sieve No. 9

B. Soundness varies from 5 to 10 mm

C. Initial setting time is not less than 30 minutes

D. Compressive stress after 7 days, is not less than 175 kg/cm²

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Pick up the incorrect statement from the following:

A. In properly graded aggregates, bulk density is more

B. In single size aggregates, bulk density is least

C. In single size aggregates, bulk density is maximum

D. None of these

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Pick up the incorrect statement from the following:

A. Tricalcium silicate (C3S) hydrates rapidly

B. Tricalcium silicate (C3S) generates more heat of hydration

C. Tricalcium silicate (C3S) develops early strength

D. Tricalcium silicate (C3S) has more resistance to sulphate attack

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The minimum diameter of longitudinal bars in a column is

A. 6 mm

B. 8 mm

C. 12 mm

D. 16 mm

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As compared to ordinary Portland cement, high alumina cement has

A. Higher initial setting time but lower final setting time

B. Lower initial setting time but higher final setting time

C. Higher initial and final setting times

D. Lower initial and final setting times

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If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is

A. P = [(Z - X)/(Z - Y)] × 100

B. P = [(X - Z)/(Z - Y)] × 100

C. P = [(X - Z)/(Z + Y)] × 100

D. P = [(Z + X)/(Z - Y)] × 100

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According to IS: 4561978, minimum slenderness ratio for a short column is

A. Less than 12

B. Less than 18

C. Between 18 and 24

D. More than 24

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Pick up the correct statement from the following:

A. Water enables chemical reaction to take place with cement

B. Water lubricates the mixture of gravel, sand and cement

C. Strength of concrete structure largely depends upon its workability

D. All the above

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Water required per bag of cement, is

A. 7 kg

B. 14 kg

C. 21 kg

D. 35 kg

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Accepted Answer

C. Halfway between the middle and edge of the wall

The critical section for finding maximum bending moment for footing under masonry wall is located

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Transport of concrete by pumps, is done for a distance of

The increased cohesiveness of concrete, makes it

In a spherical dome the hoop stress due to a concentrated load at crown is

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

M 150 grade of concrete approximates

The average permissible stress in bond for plain bars in tension is

The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

The relation between modulus of rupture f_cr, splitting strength f_cs and direct tensile strength f_cl is given by

In order to obtain the best workability of concrete, the preferred shape of aggregate is

Workability of concrete is inversely proportional to

Segregation is responsible for

The bulk density of aggregates, is generally expressed as

The aggregate containing moisture in pores and having its surface dry, is known as

Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

The rock which is not calcareous, is:

Select the incorrect statement

The final operation of finishing floors, is known as

Setting time of cement increases by adding

For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

For an ordinary Portland cement

Pick up the incorrect statement from the following:

Pick up the incorrect statement from the following:

The minimum diameter of longitudinal bars in a column is

As compared to ordinary Portland cement, high alumina cement has

If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is

According to IS: 4561978, minimum slenderness ratio for a short column is

Pick up the correct statement from the following:

Water required per bag of cement, is

Also checkout

The critical section for finding maximum bending moment for footing under masonry wall is located

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Transport of concrete by pumps, is done for a distance of

The increased cohesiveness of concrete, makes it

In a spherical dome the hoop stress due to a concentrated load at crown is

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where xu is the depth of neutral axis at the limit state of collapse)

M 150 grade of concrete approximates

The average permissible stress in bond for plain bars in tension is

The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

In order to obtain the best workability of concrete, the preferred shape of aggregate is

Workability of concrete is inversely proportional to

Segregation is responsible for

The bulk density of aggregates, is generally expressed as

The aggregate containing moisture in pores and having its surface dry, is known as

Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

The rock which is not calcareous, is:

Select the incorrect statement

The final operation of finishing floors, is known as

Setting time of cement increases by adding

For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

For an ordinary Portland cement

Pick up the incorrect statement from the following:

Pick up the incorrect statement from the following:

The minimum diameter of longitudinal bars in a column is

As compared to ordinary Portland cement, high alumina cement has

If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is

According to IS: 4561978, minimum slenderness ratio for a short column is

Pick up the correct statement from the following:

Water required per bag of cement, is

Also checkout

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

The relation between modulus of rupture f_cr, splitting strength f_cs and direct tensile strength f_cl is given by