# Civil Engineering - GATE Exam Questions

### Exercise :: GATE Exam Questions - Section 3

36.

The value of the camber recommended for cement concrete roads in areas of heavy rainfall is :

 A. 1 in 25 B. 1 in 33 C. 1 in 40 D. 1 in 50

Explanation:

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37.

A waste water sample diluted to 100 times with aeration water had an initial dissolved oxygen (DO) of 7.0 mg/l and after 5 days of incubation at 20°C, the DO was zero. The BOD of waste water is :

 A. 700 mg/l B. 100 mg/l C. cannot be determined D. 7mg/l

Explanation:

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38.

For the strip footing on a saturated clay, for the given failure surface as shown in the below figure, the bearing capacity equation takes the form : (where Cu - undrained shear strength φu - angle of internal friction B - width of strip footing qc - ultimate bearing capacity of soil)

 A. 5.7 Cu B. 5.14 Cu C. 4π Cu D. 2π Cu

Explanation:

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39.

A soil mass has coefficients of horizontal and vertical permeability as 9 x 10-7 cm/s and 4 x 10-7 cm/s, respectively. The transformed coefficient of permeability of an equivalent isotropic soil mass is

 A. 9 x 10-7 cm/s B. 4 x 10-7 cm/s C. 13 x 10-7 cm/s D. 6 x 10-7 cm/s

Explanation:

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40.

A reinforced concrete wall carrying vertical loads is generally designed as per recommendations given for columns. The ratio of minimum reinforcements in the vertical and horizontal directions is

 A. 2 : 1 B. 5 : 3 C. 1 : 1 D. 3 : 5