# Engineering-Civil -MCQ RCC Structures Design / Section 3 Sample Test,Sample questions

## Question: ``` Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than```

1.one diameter of thinner bar

2.one diameter of thicker bar

3.sum of the diameters of ihinner and thicker bars

4. twice the diameter of thinner bar

## Question: ``` A part of the slab may be considered as the flange of the T-beam if```

1. flange has adequate reinforcement transverse to beam

2.it is built integrally with the beam

3.it is effectively bonded together with the beam

4.all the above.

## Question: ``` If C is creep coefficient, f is original prestress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is:```

1. (1 - C)mf - eE

2. (C - 1)mf + eE

3. (C - 1)mf - eE

4. (1 - C)mf + eE

## Question: ` A pre-stressed concrete member`

3.is stressed after casting

4. possesses internal stresses.

1.37 cm

2.38 cm

3.39 cm

4.40 cm

## Question: ` If the loading on a prestressed rectangular beam, is uniformly distributed, the tendon to be provided should be.`

1. straight below centroidal axis

2.parabolic with convexity downward

3.parabolic with convexity upward

4.straight above centroidal axis

1.4 mm

2.5 mm

3.6 mm

4.7 mm

## Question: ` The minimum clear cover for R.C.C. columns shall be`

1. greater of 40 mm or diameter

2. smaller of 40 mm or diameter

3.greater of 25 mm or diameter

4.smaller of 25 mm or diameter

## Question: ` The minimum clear cover for R.C.C. columns shall be`

1.greater of 40 mm or diameter

2.smaller of 40 mm or diameter

3. greater of 25 mm or diameter

4.smaller of 25 mm or diameter

## Question: `A circular slab subjected to external loading, deflects to form a`

1.semi-hemisphere

2.ellipsoid

3.parabolloid

4.none of these.

## Question: `A flat slab is supported`

1.on beams

2.on columns

3.on beams and columns

4. all the above

## Question: `A foundation is called shallow if its depth, is`

1.one-fourth of its width

2.half of its width

3.three-fourth of its width

4.equal to its width

1.10%

2.20%

3.30%

4.50%

## Question: `According to the steel beam theory of doubly reinforced beams`

1.tension is resisted by tension steel

2. compression is resisted by compression steel

3.. stress in tension steel equals the stress in compression steel

4.all the above.

## Question: `An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is`

1.safe in shear

2.is safe with stirrups

3.is safe with stirrups and inclined members

4. needs revision of the section.

## Question: `An R.C.C. roof slab is designed as a two way slab if`

1.it supports live loads in both directions

2.the ratio of spans in two directions is less than 2

3. the slab is continuous over two supports

4. the slab is discontinuous at edges.

## Question: `An under-reinforced section means`

1.Steel is provided at the under side only

2. Steel provided is insufficient

3.Steel provided on one face only

4.Steel will yield first.

## Question: `Design of R.C.C. cantilever beams, is based on the resultant force at`

1.fixed end

2. free end

3.mid span

4. mid span and fixed support.

1.200 cm

2.300 cm

3.150 cm

4.100 cm

1.4d

2.8d

3.12d

4.16d

1. 0.3 H

2. 0.4 H

3. 0.5 H

4.0.7 H

## Question: `If the loading on a prestressed rectangular beam, is uniformly distributed, the tendon to be provided should be`

1.straight below centroidal axis

2. parabolic with convexity downward

3.parabolic with convexity upward

4.straight above centroidal axis

## Question: `If the size of a column is reduced above the floor, the main bars of the columns, are`

1.continued up

2.bent inward at the floor level

3.stopped just below the floor level and separate lap bars provided

4. all the above.

## Question: `If the size of a column is reduced above the floor, the main bars of the columns, are`

1.continued up

2.bent inward at the floor level

3.stopped just below the floor level and separate lap bars provided

4.all the above.

## Question: `In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at`

4.a point of zero shear force.

1.6 legged

2.8 legged

3.10 legged

4.12 legged

## Question: `In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called`

1.under-reinforced section

2.over reinforced section

3.economic section

4.critical section.

1.10 mm

2.15 mm

3.20 mm

4.25 mm

1.80 cm

2.100 cm

3.120 cm

4.140 cm

## Question: `Piles are usually driven by `

1.diesel operated hammer

2.drop hammer

3.single acting steam hammer

4.all the above.

1.30 degree

2.40 degree

3.45 Degree

4.all the above.

## Question: `The angle of internal friction of soil mass is the angle whose`

1.tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane

2.sine is equal to the ratio of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane

3.cosine is equal to the ratio of the maximum resistance sliding on any internal inclined plane to the normal pressure acting on the plane

4.none of these.

## Question: `The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or`

1.12 bar diameters

2.18 bar diameters

3.24 bar diameters

4.30 bar diameters

## Question: `The spacing of transverse reinforcement of column is decided by the following consideration.`

1.The least lateral dimension of the column

2.Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column

3.Forty-eight times the diameter of transverse reinforcement

4.all the above.

## Question: `The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as`

1.Freyssinet system

2.Magnel-Blaton system

3. C.C.L. standard system

4.Lee-McCall system.

## Question: `The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as`

1.Freyssinet system

2.Magnel-Blaton system

3. C.C.L. standard system

4. Lee-McCall system.

## Question: `The thickness of the flange of a Tee beam of a ribbed slab is assumed as`

1. width of the rib

2.depth of the rib

3.the thickness of the rib

4. twice the width of the rib.

## Question: `Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of`

1.0.1 L from the outer edge of column

2.0.1 L from the centre edge of column

3. half the distance of projection

4.one-fourth the distance of projection.

## More MCQS

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