# All India Civil Engineering (CE) Group

## The immediate settlement can be computed from the expression, based on ______a)Theory of plasticityb)Theory of elasticityc)Terzaghi’s analysisd)Pressure distributionCorrect answer is option 'B'. Can you explain this answer?

 Pioneer Academy answered  •  7 hours ago
The immediate settlement is the elastic settlement and can be computed from the following expression based on the theory of elasticity,
Si = q B (1-μ2/E s) I w.

## The assumption of Boussinesq equation is that the soil is _____a)non-homogeneousb)homogeneousc)plasticd)semi-plasticCorrect answer is option 'B'. Can you explain this answer?

 Pioneer Academy answered  •  7 hours ago
Boussinesq solved the problems of stress distribution in soils due to a concentrated loads acting at the ground surface. The assumptions made are based on theory of elasticity. Therefore, the soil is considered to be elastic and of homogeneous nature.

## The Boussinesq influence factor is given by _______a)b)c)d)Correct answer is option 'C'. Can you explain this answer?

 Pioneer Academy answered  •  7 hours ago
The Boussinesq influence factor is given by,  where the K= Boussinesq influence factor which is a function of r/z ratio which is a dimensionless factor.

## The assumption of Boussinesq equation is that the soil is ____a)semi-infiniteb)infinitec)finited)semi- finiteCorrect answer is option 'A'. Can you explain this answer?

 Gate Funda answered  •  7 hours ago
Semi-infinite condition is when one of the dimension extends to infinity. If XY pane is considered to be ground surface and the z-axis as depth, then this condition is known as semi-infinite.

## The total settlement of a footing in clay is considered to be consisting of ___________ components.a)Oneb)Threec)Twod)FourCorrect answer is option 'B'. Can you explain this answer?

 Gate Funda answered  •  7 hours ago
According to Skempton and Bjerrum, the total settlement of a footing in clay may be considered to consist of three components
S = Si + Sc + Ss.

## The problems due to stress distribution in soils due to a concentrated load was studied by ______a)G.B Airyb)Terzaghic)Darcyd)BoussinesqCorrect answer is option 'D'. Can you explain this answer?

 Gate Funda answered  •  7 hours ago
Boussinesq in 1885 studied and solved the problems of stress distribution in soils due to a concentrated loads acting at the ground surface. Darcy gave the law of flow of water through soils. The stress function was introduced by G.B Airy in 1862.

## The Boussinesq equation representing the tangential stress is ____a)b)c)d)Correct answer is option 'C'. Can you explain this answer?

 Gate Funda answered  •  7 hours ago
Boussinesq showed that the polar radial stress is given by,
Boussinesq’s tangential stress σz is given by,
where, τrz is the tangential stress
Q is the point load acting at the ground surface
r is the radial horizontal distance
z is the vertical distance.

## The Boussinesq equation representing the polar radial stress is ______a)b)c)d)Correct answer is option 'B'. Can you explain this answer?

 Gate Funda answered  •  7 hours ago
Boussinesq showed that the polar radial stress is given by,  where σR is the polar radial stress
cosβ = (z/R)
R is the polar radial coordinate = √(r2+z2).

## The recommended imposed load on staircase in residential buildings as per IS 875 is:a)5.0 kN/m2b)3.0 kN/m2c)1.5 kN/m2d)1.3 kN/m2Correct answer is option 'B'. Can you explain this answer?

 Gate Funda answered  •  7 hours ago
As per IS 875 Part 2, clause 3.1, Imposed Floor load for residential building are:

## The minimum stripping time of soffit formwork to beams (props to be refixed immediately after removal of formwork) is:a)14 daysb)3 daysc)7 daysd)21 daysCorrect answer is option 'C'. Can you explain this answer?

 Gate Gurus answered  •  7 hours ago

## The assumption of Boussinesq equation is that the soil is ______a)elasticb)semi-elasticc)plasticd)semi-plasticCorrect answer is option 'A'. Can you explain this answer?

 Gate Gurus answered  •  7 hours ago
Boussinesq solved the problems of stress distribution in soils due to a concentrated loads acting at the ground surface. The assumptions made are based on theory of elasticity. Therefore, the soil is considered to be elastic.

## The assumption made by Boussinesq in the solutions is by the ______a)theory of plasticityb)theory of elasticityc)yield pointd)failure pointCorrect answer is option 'B'. Can you explain this answer?

 Gate Gurus answered  •  7 hours ago
Boussinesq in 1885 studied and solved the problems of stress distribution in soils due to a concentrated loads acting at the ground surface, by assuming a suitable stress function. The assumptions made are based on theory of elasticity.

## The intensities of pressure below a point load where r=0 on axis of loading is _______a)b)c)d)Correct answer is option 'A'. Can you explain this answer?

 Gate Gurus answered  •  7 hours ago
Boussinesq’s vertical stress σz is given by,
Substituting r = 0,
We get,
.

## The equation for computing immediate settlement “Si = μ0μ1 q B ( 1-μ2/Es )” was proposed by _____a)Janbub)Bjerrumc)Kjaernslid)All of the mentionedCorrect answer is option 'D'. Can you explain this answer?

 Gate Gurus answered  •  7 hours ago
In 1966, Janbu, Bjerrum, and Kjaernsli have proposed the following equation for computing the immediate settlement:
Si = μ0μ1 q B (1-μ2/Es).

## The Boussinesq equation representing the vertical stress is ______a)b)c)d)Correct answer is option 'C'. Can you explain this answer?

 Gate Gurus answered  •  7 hours ago
Boussinesq showed that the polar radial stress is given by,
Boussinesq’s vertical stress σz is given by, σz = σRcos2 β
where, σz is the vertical stress
Q is the point load acting at the ground surface
r is the radial horizontal distance
z is the vertical distance.

## When the bubble of the level tube of a level remains central a)Axis of the telescope is horizontal  b)Line of sight is horizontal c)Line of sight is inclined d)Geometrical axis of the telescope is horizontal Correct answer is option 'B'. Can you explain this answer?

 Shubham Bodade answered  •  8 hours ago
Line of sight is Horizontal