RCC STRUCTURES DESIGN QUIZ

After pre-stressing process is completed, a loss of stress is due to

Elastic shortening of concrete

Shrinkage of concrete

Creep of concrete

All of the listed here

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YOUR ANSWER : ?

To ensure uniform pressure distribution, the thickness of the foundation, is

Decreased gradually towards the edge

Kept uniform throughout

Increased gradually towards the edge

Kept zero at the edge

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YOUR ANSWER : ?

If the average bending stress is 6 kg/cm² for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is

58 d

48 d

28 d

38 d

TRUE ANSWER : ?
YOUR ANSWER : ?

The self-weight of the footing, is

Both (b) and (c)

Not considered for calculating the area of the footing

Also considered for calculating the upward pressure on footing

Not considered for calculating the upward pressure on footing

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If P kg/m² is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by

D = 0.00775 aP

D = 0.07775 aP

D = 0.775 Pa

D = 0.0775 aP

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YOUR ANSWER : ?

In a combined footing if shear stress does not exceed 5 kg/cm², the nominal stirrups provided are

8 legged

10 legged

12 legged

6 legged

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If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least

WL/P

WL/4P

WL/3P

WL/2P

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The toe projection of foundation slabs is taken

Below ground surface

As one third of the base

As one sixth of overall height of the wall

Equal to heel slab

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YOUR ANSWER : ?

If the depth of actual neutral axis of a doubly reinforced beam

All listed here

Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier

Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier

Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously

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Pick up the true statement from the following:

Plain ceiling provides the best property diffusing light

All listed here

In the absence of beams, it is easier to paint

In the absence of beams, it is easier to install piping

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