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DFCCIL_CE _Quiz 53

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Question 1

Which of the following is not a classification of piles on the basis of installation ?

Question 2

Consider following statement about under-reamed piles.

(i). They are of precast reinforcement concrete piles.

(ii). Minimum spacing between the bulbs should not be less than 1.5 times the bulb diameter.

(iii) They are used in expansive soils.

(iv) The ratio of bulb to shaft diameter is usually 2 to 3

Which of these statements are correct?

Question 3

The advantage of a concrete pile over a timber pile is

Question 4

The load carrying capacity of an individual friction pile is 250 kN. What is the total load carrying capacity of a group of 4 such piles with group efficiency factor of 0.78?

Question 5

A friction pile of diameter 50 cm is embedded 15 m into the homogeneous consolidated clay deposit if the adhesion factor is 0.7 and adhesion develops between the clay and pile shaft is 4t/m2. What is the safe load (t) for factor of safety 3.0?

Question 6

Pick up the incorrect statement:
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Dec 16AE & JE Exams