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4

In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on

A. Front face only

B. Inner face only

C. Both front face and inner face

D. None of the above

Correct Answer :

A. Front face only


Related Questions

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4

C.R.R.I. charts are used to obtain a relationship between strength of concrete and

A. Water cement ratio

B. Workability

C. Grading of aggregate

D. Fineness modulus

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4

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)

A. 0.367 xu

B. 0.416 xu

C. 0.446 xu

D. 0.573 xu

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4

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

A. 0.15% to 2%

B. 0.8% to 4%

C. 0.8% to 6%

D. 0.8% to 8%

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4

The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

A. 30 %

B. 40 %

C. 50 %

D. 60 %

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4

On a grading curve, the gap grading is represented by

A. A horizontal line

B. A vertical line

C. N.W. inclined line

D. N.E. inclined line

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4

Pozzolana cement is used with confidence for construction of

A. Dams

B. Massive foundations

C. R.C.C. structures

D. All the above

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4

Which of the following has high tensile strength?

A. Plain hot rolled wires

B. Cold drawn wires

C. Heat treated rolled wires

D. All have same tensile strength

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4

To ensure constant moisture content in aggregates

A. Area of each aggregate pile should be large

B. Height of each aggregate pile should not exceed 1.50 m

C. Aggregate pile should be left for 24 hours before aggregates are used

D. All the above

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4

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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4

The bulk density of aggregates, depends upon

A. Shape

B. Grading

C. Compaction

D. All the above

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4

The load factors for live load and dead load are taken respectively as

A. 1.5 and 2.2

B. 2.2 and 1.5

C. 1.5 and 1.5

D. 2.2 and 2.2

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4

Pozzolanic properties exist in

A. Shales

B. Fly ash

C. Pumicite

D. All the above

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4

Pick up the correct statement from the following:

A. Lime in excess, causes the cement to expand and disintegrate

B. Silica in excess, causes the cement to set slowly

C. Alumina in excess, reduces the strength of the cement

D. All the above

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4

In case of hand mixing of concrete, the extra cement to be added is

A. 5 %

B. 10 %

C. 15 %

D. 20 %

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4

An ideal ware house, is provided

A. Water proof masonry walls

B. Water proof roof

C. Few windows which remain generally closed

D. All the above

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4

Separation of coarse aggregates from mortar during transportation, is known

A. Bleeding

B. Creeping

C. Segregation

D. Shrinkage

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4

For the construction of thin R.C.C. structures, the type of cement to be avoided, is

A. Ordinary Portland cement

B. Rapid hardening cement

C. Low heat cement

D. Blast furnace slag cement

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4

In pre-stressed concrete

A. Forces of tension and compression change but lever arm remains unchanged

B. Forces of tension and compressions remain unchanged but lever arm changes with the moment

C. Both forces of tension and compression as well as lever arm change

D. Both forces of tension and compression as well as lever arm remain unchanged

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4

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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4

Ratio of permissible stress in direct compression and bending compression is

A. Less than 1

B. Between 1 and 1.5

C. Between 1.5 and 2.0

D. Greater than 2

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4

The design yield stress of steel according to IS: 4561978 is: (Where fy is the characteristic yield strength of steel)

A. 0.37 fy

B. 0.57 fy

C. 0.67 fy

D. 0.87 fy

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4

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

A. Low-heat Portland cement

B. Rapid hardening Portland cement

C. Portland blast slag cement

D. Portland pozzolana cement

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4

Pick up the correct statement from the following:

A. Construction joints are necessarily planned for their locations

B. Expansion joints are provided to accommodate thermal expansion

C. Construction joints are provided to control shrinkage cracks

D. All the above

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4

Pick up the correct proportions of chemical ingredients of cement

A. Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3

B. Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3

C. Alumina : Silica : Lime : Iron oxide : 63 : 22 : 6 : 3

D. Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3

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4

Pick up the incorrect statement from the following:

A. The degree of grinding of cement, is called fineness

B. The process of changing cement paste into hard mass, is known as setting of cement

C. The phenomenon by virtue of which cement does not allow transmission of sound, is known as soundness of cement

D. The heat generated during chemical reaction of cement with water, is known as heat of hydration

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4

The risk of segregation is more for

A. Wetter mix

B. Larger proportion of maximum size aggregate

C. Coarser grading

D. All the above

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4

The specifications of a cement bag for storage, are

A. Weight 50 kg

B. Height 18 cm

C. Plan area 3000 sq. cm

D. All the above

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4

Concrete is unsuitable for compaction by a vibrator if it is

A. Dry

B. Earth moist

C. Semi-plastic

D. Plastic

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4

Curing

A. Reduces the shrinkage of concrete

B. Preserves the properties of concrete

C. Prevents the loss of water by evaporation

D. All of the above

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4

Pick up the incorrect statement from the following:

A. A rich mix of concrete possesses higher strength than that a lean mix of desired workability with excessive quantity of water

B. The strength of concrete decreases as the water cement ratio increases

C. Good compaction by mechanical vibrations, increases the strength of concrete

D. None of these