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

Question

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

Correct Answer :

A. 0.43 d

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The factor which affects workability, is

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The surface where two successive placements of concrete meet, is known as

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The void ratio of

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A concrete using an air entrained cement

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Pick up the incorrect statement from the following:

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The minimum cover in a slab should neither be less than the diameter of bar nor less than

A. 10 mm

B. 15 mm

C. 25 mm

D. 13 mm

Discuss this answer

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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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Pick up the correct statement from the following:

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In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by

A. 10 %

B. 20 %

C. 30 %

D. 40 %

Discuss this answer

While compacting the concrete by a mechanical vibrator, the slump should not exceed

A. 2.5 cm

B. 5.0 cm

C. 7.5 cm

D. 10 cm

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Pick up the correct statement from the following:

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I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

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Workability improved by adding

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The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

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Tricalcium aluminate (C₃A)

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The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

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For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

Discuss this answer

Addition of pozzolana to ordinary port land cement, causes

Discuss this answer

For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is

A. 3.5 m

B. 4 m

C. 4.5 m

D. 5 m

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The maximum percentage of chemical ingredient of cement is that of

C. Silica

D. Lime

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Permissible compressive strength of M 300 concrete grade is

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The bulk density of aggregates, is generally expressed as

D. g/cm3

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An ideal ware house, is provided

Discuss this answer

Log Angles machine is used to test the aggregate for

Discuss this answer

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

Discuss this answer

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

Discuss this answer

Maximum distance between expansion joints in structures as per IS: 456 1978 is

A. 20 m

B. 30 m

C. 45 m

D. 60 m

Discuss this answer

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

A. Zero

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The limits of percentage p of the longitudinal reinforcement in a column is given by

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Answer 1

A. Water content and its temperature

Answer 2

B. Shape and size of the aggregates

Answer 3

C. Air entraining agents

Answer 4

D. All the above

Answer 5

A. Contraction joint

Answer 6

B. Expansion joint

Answer 7

C. Construction joint

Answer 8

D. Both (a) and (b)

Answer 9

A. Single size coarse aggregate is roughly 0.45

Answer 10

B. Graded coarse aggregate is roughly 0.040

Answer 11

C. Fine aggregate is roughly 0.45

Answer 12

D. All the above

Answer 13

A. Has strength less than 10% to 15%

Answer 14

B. Has more resistance to weathering

Answer 15

C. Is more plastic and workable

Answer 16

D. Is free from segregation and bleeding

Answer 17

A. Admixtures accelerate hydration

Answer 18

B. Admixtures make concrete water proof

Answer 19

C. Admixtures make concrete acid proof

Answer 20

D. Admixtures give high strength

Answer 21

A. Air-entraining agent

Answer 22

B. Foaming agent

Answer 23

C. Oily-agent

Answer 24

D. All the above

Answer 25

A. Water cement paste hardens due to hydration

Answer 26

B. During hardening cement binds the aggregates together

Answer 27

C. Cement provides strength, durability and water tightness to the concrete

Answer 28

D. All the above

Answer 29

A. Bulking of sand is caused due to formation of a thin film of surface moisture

Answer 30

B. Fine sand bulks more than coarse sand

Answer 31

C. The volume of fully saturated sand, is equal to the volume of dry and loose sand

Answer 32

D. All the above

Answer 33

A. Coarse aggregates

Answer 34

B. Fine aggregates

Answer 35

C. Neither (a) nor (b)

Answer 36

D. Both (a) and (b)

Answer 37

A. Fly ash

Answer 38

B. Hydrated lime

Answer 39

C. Calcium chloride

Answer 40

D. All the above

Answer 41

A. Low-heat Portland cement

Answer 42

B. Rapid hardening Portland cement

Answer 43

C. Portland blast slag cement

Answer 44

D. Portland pozzolana cement

Answer 45

A. Reacts fast with water

Answer 46

B. Generates less heat of hydration

Answer 47

C. Causes initial setting and early strength of cement

Answer 48

D. Does not contribute to develop ultimate strength

Answer 49

A. Rounded aggregate

Answer 50

B. Irregular aggregate

Answer 51

C. Angular aggregate

Answer 52

D. Flaky aggregate

Answer 53

A. Is always less than 1

Answer 54

B. Is always greater than 1

Answer 55

C. Can be more than 1

Answer 56

D. Can be less than 1

Answer 57

A. Decrease in early strength

Answer 58

B. Reduction in chemical action with sulphates

Answer 59

C. Increase in shrinkage

Answer 60

D. All the above

Answer 61

A. Magnesium oxide

Answer 62

B. Iron oxide

Answer 63

A. 100 kg/cm²

Answer 64

B. 150 kg/cm²

Answer 65

C. 200 kg/cm²

Answer 66

D. 300 kg/cm²

Answer 67

A. Tonnes/cubic metre

Answer 68

B. kg/cubic metre

Answer 69

C. kg/litre

Answer 70

A. Water proof masonry walls

Answer 71

B. Water proof roof

Answer 72

C. Few windows which remain generally closed

Answer 73

D. All the above

Answer 74

A. Crushing strength

Answer 75

B. Impact value

Answer 76

C. Abrasion resistance

Answer 77

D. Water absorption

Answer 78

A. Rounded

Answer 79

B. Elongated

Answer 80

C. Angular

Answer 81

D. All of the above

Answer 82

A. f_cr - f_cs = f_cl

Answer 83

B. f_cr > f_cs > f_cl

Answer 84

C. f_cr < f_cs < f_cl

Answer 85

D. f_cs > f_cr > f_cl

Answer 86

B. Tensile

Answer 87

C. Compressive

Answer 88

D. Tensile or compressive

Answer 89

A. 0.15% to 2%

Answer 90

B. 0.8% to 4%

Answer 91

C. 0.8% to 6%

Answer 92

D. 0.8% to 8%

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

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

The factor which affects workability, is

The surface where two successive placements of concrete meet, is known as

The void ratio of

A concrete using an air entrained cement

Pick up the incorrect statement from the following:

The minimum cover in a slab should neither be less than the diameter of bar nor less than

Workability improved by adding

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

Pick up the correct statement from the following:

In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by

While compacting the concrete by a mechanical vibrator, the slump should not exceed

Pick up the correct statement from the following:

I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

Workability improved by adding

The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

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The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

Addition of pozzolana to ordinary port land cement, causes

For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is

The maximum percentage of chemical ingredient of cement is that of

Permissible compressive strength of M 300 concrete grade is

The bulk density of aggregates, is generally expressed as

An ideal ware house, is provided

Log Angles machine is used to test the aggregate for

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

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

Maximum distance between expansion joints in structures as per IS: 456 1978 is

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

The limits of percentage p of the longitudinal reinforcement in a column is given by

Also checkout

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

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

The factor which affects workability, is

The surface where two successive placements of concrete meet, is known as

The void ratio of

A concrete using an air entrained cement

Pick up the incorrect statement from the following:

The minimum cover in a slab should neither be less than the diameter of bar nor less than

Workability improved by adding

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

Pick up the correct statement from the following:

In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by

While compacting the concrete by a mechanical vibrator, the slump should not exceed

Pick up the correct statement from the following:

I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

Workability improved by adding

The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

Tricalcium aluminate (C3A)

The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

Addition of pozzolana to ordinary port land cement, causes

For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is

The maximum percentage of chemical ingredient of cement is that of

Permissible compressive strength of M 300 concrete grade is

The bulk density of aggregates, is generally expressed as

An ideal ware house, is provided

Log Angles machine is used to test the aggregate for

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

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

Maximum distance between expansion joints in structures as per IS: 456 1978 is

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

The limits of percentage p of the longitudinal reinforcement in a column is given by

Also checkout

Tricalcium aluminate (C₃A)

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