The foundations are placed below ground level, to increase

In case of foundations on black cotton soils, the most suitable method to increase the bearing capacity of soils is to

A

Increase the depth of foundation

B

Drain the soil

C

Compact the soil

D

Replace the poor soil

If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?

A

Bashar, three times more

B

Rahim , three times more

C

They both go around 12 times

D

Bashar, eight times more

Pile foundations are suitable for

A

Water logged soils

B

Soft rocks

C

Compact soils

D

Multi-storeyed buildings

If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

A

There will be no settlement of columns

B

There will be no differential settlement

C

The settlement of exterior columns will be more than interior columns

D

The settlement of interior columns will be more than exterior columns

According to Rankine's formula, minimum depth of foundations, is

A

$$\frac{{\text{P}}}{{\text{w}}} \times {\left( {\frac{{1 + \sin \varphi }}{{1 - \sin \varphi }}} \right)^2}$$

B

$$\frac{{\text{P}}}{{\text{w}}} \times {\left( {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right)^2}$$

C

$$\frac{{\text{P}}}{{2{\text{w}}}} \times {\left( {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right)^2}$$

D

$$\frac{{\text{P}}}{{\text{w}}} \times \frac{{1 + \sin \varphi }}{{1 - \sin \varphi }}$$

In grillage foundations, distance between flanges of grillage beams, is kept

A

40 cm

B

Equal to flange width

C

Twice the flange width

D

Maximum of (A), (B) and (C)

Raft foundations are used for:

A

Providing increased area of foundation over poor bearing capacity of soil

B

Spanning over small soft or loose pockets

C

Counter acting the hydrostatic effect

D

All the above

The concrete slump recommended for foundations, is

A

25 to 50 mm

B

30 to 125 mm

C

50 to 100 mm

D

75 to 125 mm

The differential settlement in case of foundations on sandy soils should not exceed

A

25 mm

B

40 mm

C

65 mm

D

100 mm

The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to

A

10 mm

B

20 mm

C

30 mm

D

40 mm

The foundations are placed below ground level, to increase

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