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QUESTION: 1

A simply supported RC beam having clear span 5 m and support width 300 mm has the cross section as shown in figure below.

What is the effective span of the beam as perIS:456?

Solution:

QUESTION: 2

What is the modular ratio to be used in an analysis of RC beams using working stress method if the grade of concrete is M20?

Solution:

QUESTION: 3

In RCC beams, as the percentage area of tensile steel increase

Solution:

QUESTION: 4

The total compressive force at the time of failure of a concrete beam section of width 'b' without considering the partial safety factor of the material is

Solution:

QUESTION: 5

A floor slab of thickness t, is cast monolithically transverse to a rectangular continuous beam of span, L and width, B. If the distance between two consecutive points of contraflexure is, L0, the effective width of compression flange at a continuous support is (GATE 2012)

Solution:

QUESTION: 6

A reinforced concrete member is subjected to combined action of combined action of compressive axial force and bending moment. If e_{c} is the best least compressive strain in the member, f_{y}, the yield stress of steel and, E_{s}, the modulus of elasticity of steel, the maximum permissible compressive strain in concrete member will be

Solution:

QUESTION: 7

The span to depth ratio limit is specified in IS : 456-1978 for the reinforced concrete beams, in order to ensure that the

Solution:

QUESTION: 8

As per the provisions of IS : 456–2000, in the limit state method for design of beams, the limiting value of the depth of neutral axis in a reinforced concrete beam of effective depth 'd' is given as

Solution:

As any specific garde of concrete is not given so ans d is correct

QUESTION: 9

If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral balanced section using working stress method is

Solution:

Using, X= 1/(1+3fy/280)

QUESTION: 10

Which one of the following statements about the percentage of tensile steel required to produce a balanced reinforced concrete section is correct

Solution:

QUESTION: 11

Minimum clear cover (in mm) to the main steel bars in slab, beam, column and footing respectively are?

Solution:

(Insert one of the option matching this table→ 20mm, 25mm, 40mm, 50mm)

QUESTION: 12

Beam sectins designed in accordance with LSM as compared to sections designed in accordance wtih WSM will have

Solution:

QUESTION: 13

If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, the beam is called:

Solution:

QUESTION: 14

For a continuous slab of 3m*3.5m size the minimum overall depth of slab to satisfy verticle deflection limits is

Solution:

In case of continuous slab the Max. Deflection is 40 so

Span/depth=40

3000/40=depth

Depth=75mm

QUESTION: 15

The minimum reinforced using mild steel in slab should not be less than.

Solution:

QUESTION: 16

In the reinforced concrete slab, the spacing between main reinforcement should nto exceed

Solution:

QUESTION: 17

A beam curved in plan is designed for

Solution:

QUESTION: 18

Flexural collapse in over-reinforced beam is due to

Solution:

QUESTION: 19

Spacing of shear stirrups in a rectangular RC beam is

Solution:

QUESTION: 20

Permissible shear stress in concrete is a function of

Solution:

QUESTION: 21

The slab is designed as one way if the ratio of long span to short span is

Solution:

QUESTION: 22

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

Solution:

QUESTION: 23

For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be

Solution:

span/depth= 40/3

Therefore, 15*3/40=1.125= depth

Therefore depth = 1.125m > 1m

QUESTION: 24

Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the centre of slab bearing where x is equal to

Solution:

QUESTION: 25

If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are

Solution:

### Footing, Columns, Beams and Slabs

Doc | 7 Pages

### Slabs

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### Beams (Part - 2)

Doc | 3 Pages

### Reinforced Concrete Slabs: One-way Slabs

Doc | 25 Pages

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