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AE-JE Foundation CE: Soil Mechanics Quiz 10

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Question 1

Skin friction capacities of a 40 cm × 40 cm size concrete pile for the portions A, B and C are 18.5 kN, 45.6 kN and 607 kN respectively as shown in figure below. Assume point load capacity of 10500 kN/m², the total pile load capacity will be

Question 2

Which of the following statements is true?

Question 3

According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges is not less than

Question 4

A concrete pile has size 40 cm × 40 cm, ultimate load carrying capacity of pile is 1200 kN,

and ∝ is 50 kN/m² and 0.6 respectively. What is the length of pile?

Question 5

The load-carrying capacity of an individual friction pile is 200 kN. What is the total load carrying capacity of a group of 9 such piles with a group efficiency factor of 0.8?

Question 6

Which of the following types of piles is likely to have the highest load capacity in compression?

Question 7

Each of the next items consists of two statements, one labeled as the ‘Statements (I)’ and the other as ‘Statements (II)’ You are to examine these two statements carefully and select the answers to these items using the codes given below:
Statement (I): Different types of piles are used in construction work depending on the type of load to be carried, the sub-soil conditions and the ground water table.
Statement (II): The load transfer mechanism from a pile to the soil is selfsame in all cases.

Question 8

Which of the following is not true for dynamic method?

(i) Dynamic method is suitable for coarse grain as well as fine grain soil.

(ii) It is not applicable for group action to find ultimate load.

(iii) Energy loss due to vibration and heat are not accounted in dynamic method formulae.

(iv) It is not suitable for clays.

Question 9

A pile of 60 cm diameter and 15 m length is driven in clay of average unconfined compressive strength of 120 kN/m². The ultimate pile load carrying capacity of this end-bearing pile will be? Assume ∝ = 0.75

Question 10

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

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