GATE CE topic:foundation-engineering PYQs & Answers — Page 4

Questions 31–40 of 78. Imported answers require independent review unless marked reviewed.

A square footing is to be designed to carry a column load of 500 kN which is resting on a soil stratum having the following average properties: bulk unit weight = 19 kN/m

; angle of internal friction = 0° and cohesion = 25 kPa. Considering the depth of the footing as 1 m and adopting Meyerhof’s bearing capacity theory with a factor of safety of 3, the width of the footing (in m) is __________________ (round off to one decimal place)

[Assume the applicable shape and depth factor values as unity; ground water level at greater depth.]

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A circular pile of diameter 0.6 m and length 8 m was constructed in a cohesive soil stratum having the following properties: bulk unit weight = 19 kN/m

; angle of internal friction = 0° and cohesion = 25 kPa.

The allowable load the pile can carry with a factor of safety of 3 is ________________ kN (round off to one decimal place).

[Adopt: Adhesion factor,

= 1.0 and Bearing capacity factor,

= 9.0]

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Read the following statements:

(P) While designing a shallow footing in sandy soil, monsoon season is considered for critical design in terms of bearing capacity.

(Q) For slope stability of an earthen dam, sudden drawdown is never a critical condition.

(R) In a sandy sea beach, quicksand condition can arise only if the critical hydraulic gradient exceeds the exiting hydraulic gradient.

(S) The active earth thrust on a rigid retaining wall supporting homogenous cohesionless backfill will reduce with the lowering of water table in the backfill.

Which one of the following combinations is correct?

Your answerChoose one option.

(P)-True, (Q)-False, (R)-False, (S)-False

(P)-False, (Q)-True, (R)-True, (S)-True

(P)-True, (Q)-False, (R)-True, (S)-True

(P)-False, (Q)-True, (R)-False, (S)-False

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Let

and

denote the effective vertical stress and effective horizontal stress, respectively. Which one of the following conditions must be satisfied for a soil element to reach the failure state under Rankine’s passive earth pressure condition?

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A concentrated vertical load of 3000 kN is applied on a horizontal ground surface. Points P and Q are at depths 1 m and 2 m below the ground, respectively, along the line of application of the load. Considering the ground to be a linearly elastic, isotropic, semi-infinite medium, the ratio of the increase in vertical stress at P to the increase in vertical stress at Q is ________. (in integer)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A concentrically loaded isolated square footing of size 2 m × 2 m carries a concentrated vertical load of 100 kN. Considering Boussinesq’s theory of stress distribution, the maximum depth (in m) of the pressure bulb corresponding to 10 % of the vertical load intensity will be _________. (round off to two decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

At a site, Static Cone Penetration Test was carried out. The measured point (tip) resistance

was 100 kPa at a certain depth. The friction ratio (

) was estimated as 1 % at the same depth.

The value of sleeve (side) friction (in kPa) at that depth was ________________. (in integer)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

As per Rankine’s theory of earth pressure, the inclination of failure planes is

with respect to the direction of the minor principal stress.

The above statement is correct for which one of the following options?

Your answerChoose one option.

Only the active state and not the passive state

Only the passive state and not the active state

Both active as well as passive states

Neither active nor passive state

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A square concrete pile of 10 m length is driven into a deep layer of uniform homogeneous clay. Average unconfined compressive strength of the clay, determined through laboratory tests on undisturbed samples extracted from the clay layer, is 100 kPa. If the ultimate compressive load capacity of the driven pile is 632 kN, the required width of the pile is ______ mm. (in integer)

(Bearing capacity factor

; adhesion factor

)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A group of total 16 piles are arranged in a square grid format. The center-to-center spacing (

) between adjacent piles is 3 m. The diameter (

) and length of embedment of each pile are 1 m and 20 m, respectively. The design capacity of each pile is 1000 kN in the vertical downward direction. The pile group efficiency (

) is given by

where

and

are number of rows and columns in the plan grid of pile arrangement, and

. The design value of the pile group capacity (in kN) in the vertical downward direction is __________________. (round off to the nearest integer)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE CE topic:foundation-engineering PYQs

Question 58

Question 59

Question 17

Question 18

Question 32

Question 32

Question 33

Question 41

Question 54

Question 54