ESE CE: Soil Mechanics & Foundation Engineering Champion Quiz 4 for ESE & GATE CE Exams

Question 1

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

Question 2

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 3

A precast concrete pile is driven with a 50 kN hammer falling through a height of 1.0 m with an efficiency of 0.6. The set value observed is 4 mm per blow and the combined temporary compression of the pile, cushion and the ground is 6 mm. As per Modified Hiley Formula, the ultimate resistance of the pile is

Question 4

For the soil profile shown in figure below, the minimum number of precast concrete piles o 300 mm diameter required to safely carry the load for a given factor of safety of 2.5 (assuming100% efficiency for the pile group) is equal to

Question 5

A pile of 0.50 m diameter and of length 10 m is embedded in a deposit of clay. The undrained strength parameters of the clay are cohension = 60 kN/m² and the angle of internal friction = 0. The skin friction capacity (kN) of the pile for an adhesion factor of 0.6 , is

Question 6

Match the items of List–I with List–II and select the correct answer.
List–I
P Modulus of subgrade reaction
Q Relative density and strength
R Skin friction and point bearing reistance
S Elastic constants
List–II
1. Cyclic pile load test
2. Pressure meter test
3. Plate load test
4. Standard penetration test
5. Dynamic cone penetration test
Codes :
P Q R S

Question 7

A strip footing (8m wide) is designed for a total settlement of 40mm in cohesive soil. The safe bearing capacity (shear) was I50kN/m² and safe allowable soil pressure was 100kN/m². Due to importance of the structure, now the footing is to be redesigned for total settlement of 25mm. the new width of the footing will be

Question 8

Dessication of soil leads to

Question 9

Consider the following statements:
1). The hydraulic head at a point in the soil includes the piezometric head as well as datum head.
2). Piping in soil occurs when the effective pressure becomes equal to zero.
3). Piping in soil occurs in fine sand and silt.
Which of these statements is/are correct?

Question 10

The specific gravity of a soil sample is 2.7 and its void ratio is 0.945. when it is fully saturated the moisture content of the soil will be