The pitch of the main bars in a simply supported slab, should not exceed its effective depth by

If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor)

A

$$\frac{{\text{M}}}{{100{\text{Q}}}}$$

B

$$\frac{{\text{M}}}{{10\sqrt {\text{Q}} }}$$

C

$$\sqrt {\frac{{\text{M}}}{{\text{Q}}}} $$

D

$$\sqrt {\frac{{\text{M}}}{{100{\text{Q}}}}} $$

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

A

Three times

B

Four times

C

Five times

D

Two times

In a simply supported slab, alternate bars are curtailed at

A

$${\frac{1}{4}^{{\text{th}}}}$$ of the span

B

$${\frac{1}{5}^{{\text{th}}}}$$ of the span

C

$${\frac{1}{6}^{{\text{th}}}}$$ of the span

D

$${\frac{1}{7}^{{\text{th}}}}$$ of the span

For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed

A

10

B

15

C

20

D

25

The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where $$\delta {\text{S}}$$ = Static deflection of simply supported shaft due to uniformly distributed load)

A

$$\frac{{0.4985}}{{\sqrt {\delta {\text{S}}} }}$$

B

$$\frac{{0.5615}}{{\sqrt {\delta {\text{S}}} }}$$

C

$$\frac{{0.571}}{{\sqrt {\delta {\text{S}}} }}$$

D

$$\frac{{0.6253}}{{\sqrt {\delta {\text{S}}} }}$$

The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where $$\delta $$ = Static deflection of a simply supported shaft due to the point load)

A

$$\frac{{0.4985}}{{\sqrt \delta }}$$

B

$$\frac{{0.5615}}{{\sqrt \delta }}$$

C

$$\frac{{0.571}}{{\sqrt \delta }}$$

D

$$\frac{{0.6253}}{{\sqrt \delta }}$$

The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is

A

35

B

25

C

30

D

20

The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

A

25

B

30

C

35

D

40

The effective span of a simply supported slab, is

A

Distance between the centers of the bearings

B

Clear distance between the inner faces of the walls plus twice the thickness of the wall

C

Clear span plus effective depth of the slab

D

None of these

The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone

A

Compressive stress

B

Shear stress

C

Bond stress

D

Tensile stress

The pitch of the main bars in a simply supported slab, should not exceed its effective depth by

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