Civil Engineering · all questions

RCC Structures Design
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Q201

A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is

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Q202

In a slab, the pitch of the main reinforcement should not exceed its effective depth

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Q203

If ‘A’ is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force ‘P’ through its centroidal longitudinal axis, the compressive stress in concrete, is

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Q204

The breadth of a ribbed slab containing two bars must be between

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Q205

The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is

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Q206

If the modular ratio is ‘m’, steel ratio is ‘r’ and overall depth of a beam is ‘d’, the depth of the critical neutral axis of the beam, is

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Q207

In a beam the local bond stress S_b, is equal to

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Q208

The angle of internal friction of soil mass is the angle whose

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Q209

Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as

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Q210

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

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Q211

By over-reinforcing a beam, the moment of resistance can be increased not more than

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Q212

In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed

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Q213

A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm² and 300 kg/cm², the Safe load on the column, should not exceed

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Q214

A flat slab is supported

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Q215

If S_b, is the average bond stress on a bar of diameter d subjected to maximum stress t, the length of the embedment

l

is given by

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Q216

The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of

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Q217

Spacing of stirrups in a rectangular beam, is

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Q218

A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm², the area of steel required, is

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Q219

Post tensioning system

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Q220

An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

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