Description : In soils having same values of plasticity index, if liquid limit is increased, then (A) Compressibility and permeability decrease and dry strength increases (B) Compressibility, ... permeability and dry strength increase (D) Compressibility and permeability increase and dry strength decreases
Last Answer : Answer: Option D
Description : The change of moisture content of soils, changes the (A) Value of the angle of repose (B) Amount of compaction required (C) Cohesive strength of soil (D) All the above
Description : Critical shear stress of cohesive sediment (a) Decreases with the void ratio for a given plasticity index (b) Increases with the plasticity index for a given void ratio (c) Increases with shear strength for a given clay content (d) All of the above.
Last Answer : (c) Increases with shear strength for a given clay content
Description : Pick up the correct statement from the following: (A) The permeability of the coarse-grained soils may be reduced by grouting (B) The process of injecting fluids (i.e. grouts) into the pores space of the soil is called grouting (C) The grouting increases the soil strength (D) All the above
Description : Black cotton soil is unsuitable for foundations because its (A) Bearing capacity is low (B) Permeability is uncertain (C) Particles are cohesive (D) Property to undergo a volumetric change due to variation of moisture content
Description : Quick sand is a (A) Type of sand (B) Flow condition occurring in cohesive soils (C) Flow condition occurring in cohesion-less soils (D) Flow condition occurring in both cohesive and cohesion-less soils
Last Answer : (A) Type of sand
Description : Cohesive soils are generally (A) Plastic and also compressible (B) Elastic and also compressible (C) Plastic but incompressible (D) None of these
Last Answer : (A) Plastic and also compressible
Description : The Westergaard analysis is used for (A) Sandy soils (B) Cohesive soils (C) Stratified soils (D) Clayey soils
Last Answer : (C) Stratified soils
Description : The most suitable method for drainage of fine grained cohesive soils is (A) Well point system (B) Vacuum method (C) Deep well system (D) Electro-osmosis method
Description : Auger boring (A) Is the most primitive method for making a hole in the ground (B) Is generally employed in cohesive and other self soils above water table (C) Is most economical upto a depth of 5 metres (D) All the above
Description : Consider the following statements: 1. The benefit of surcharge and depth of foundation is only marginal in case of footings on purely cohesive soils. 2. The bearing capacity of a footing in pure clay increases with increase in size of the ... , 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only
Last Answer : (d) 1 & 3 only
Description : At liquid limit, all soils possess (A) Same shear strength of small magnitude (B) Same shear strength of large magnitude (C) Different shear strengths of small magnitude (D) Different shear strengths of large magnitude
Last Answer : (A) Same shear strength of small magnitude
Description : The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated (A) Sands (B) Clays (C) Gravels (D) Highly organic soils
Last Answer : (B) Clays
Description : Pick up the correct statement from the following: (A) In soils, the flow index indicates variation in shear strength with water content (B) Liquid limit minus plastic limit, is known as plasticity ... Plastic limit minus shrinkage limit, is known as shrinkage index of the soil (D) All the above
Description : The Auger borings are not common (A) In soils that require lateral support (B) In cohesive soils (C) In soft soils (D) None of the above
Last Answer : Option A
Description : Write any four assumptions of Rankine’s theory made for non-cohesive soils.
Last Answer : Assumption of Rankines Theory for non-cohesive soils : i. The soil is semi-infinite, homogenous, dry and cohesion less. ii. The soil element is in the state of plastic equilibrium. iii ... and smooth. v. The wall yield about the base thus satisfies deformation condition for plastic equilibrium.
Description : The shear strength of a soil (A) Is directly proportional to the angle of internal friction of the soil (B) Is inversely proportional to the angle of internal friction of the soil (C) Decreases with increase in normal stress (D) Decreases with decrease in normal stress
Description : The coefficient of permeability of soils, is generally expressed in (A) cm/sec (B) cm/minute (C) cm2 /sec (D) cm2 /minute
Last Answer : (A) cm/sec
Description : Pick up the incorrect statement from the following: (A) Compaction has no effect on the structure of a soil (B) Permeability decreases with increase in the dry density of a compacted soil (C) ... a dry side compacted soil (D) Dry side compaction soils swell more when given access to moisture
Last Answer : (A) Compaction has no effect on the structure of a soil
Description : Which of the following methods is best suited for determination of permeability of coarse-grained soils? (A) Constant head method (B) Falling head method (C) Both the above (D) None of the above
Last Answer : Answer: Option A
Description : The quantity of seepage of water through soils is proportional to (A) Coefficient of permeability of soil (B) Total head loss through the soil (C) Neither (a) nor (b) (D) Both (a) and (b)
Description : The consolidation time for soils (A) Increases with increasing compressibility (B) Decreases with increasing permeability (C) Increases rapidly with increasing size of soil mass (D) All the above
Description : The coefficients of permeability of soils of an unconfined aquifer and another confined aquifer were determined by pumping water from the wells and observing the effect of water table in two test wells at equal distances was found to be equal. ... (B) H = h1 - h2 (C) H = h2 + h1 (D) ½ (h1 + h2)
Description : If a soil undergoes a change in shape and volume by application of external loads over it, but recovers its shape and volume immediately after removal of the load, the property of the soil is said to ... Resilience of soils (B) Elasticity of soils (C) Compressibility of soils (D) None of these
Last Answer : Answer: Option B
Description : Wetting an area down with alchohol before plucking hairs for culture will decrease inaccurate tests. A. True B. False
Last Answer : Ans: A
Description : The ratio of shear stress and shear strain of an elastic material, is (A) Modulus of Rigidity (B) Shear Modulus (C) Modulus of Elasticity (D) Both (a) and (b)
Last Answer : (D) Both (a) and (b)
Description : Select the incorrect statement. (A) In a direct shear box test, the plane of shear failure is predetermined (B) Better control is achieved on the drainage of the soil in a triaxial compression ... compression test is uniform (D) Unconfined compression test can be carried out on all types of soils
Description : Quicksand is a) Moist sand containing a small percentage of clay b) Is a condition which generally occurs in coarse sands c) Is a condition in which cohesive properties of soil increase rapidly d) Is a condition in which a cohesion less soil loses its strength because of upward flow of water
Last Answer : d) Is a condition in which a cohesion less soil loses its strength because of upward flow of water
Description : The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known (A) Liquid limit (B) Plastic limit (C) Shrinkage limit (D) Permeability limit
Last Answer : (C) Shrinkage limit
Description : Pick up the correct statement from the following: (A) When stress decreases, void, ratio decreases (B) When stress decreases, coefficient of permeability decreases (C) When stress ... change decreases (D) When stress decreases void ratio, coefficients of permeability and volume change decrease
Description : Coefficient of permeability of soil (A) Does not depend upon temperature (B) Increases with the increase in temperature (C) Increases with the decrease in temperature (D) None of the above
Description : The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known (A) Liquid limit (B) Plastic limit (C) Shrinkage limit (D) Permeability limit
Last Answer : (A) Liquid limit
Description : Pick up the correct statement from the following: (A) Permeability is a measure of conducting the magnetic lines of force in the material (B) Permeability is a measure of the extent to which magnetic ... magnetic flux density (B) to the field strength of the magnetizing field (D) All of these
Description : Pick up the correct statement from the following: (A) Kaolinite is most stable clay (B) Kaolinite shows a very little sign of swelling on wetting (C) Kaolinite is also called China clay (D) All the above
Description : The process of hardening the concrete by keeping its surface moist is known (A) Placing (B) Wetting (C) Curing (D) Compacting
Last Answer : Answer: Option C
Description : Pick up the correct statement from the following: (A) For thin structures subjected to wetting and drying, the water cement ratio should be 0.45 (B) For mass concrete structures subjected to wetting and ... under water, the water-cement ratio by weight should be 0.55 (D) All the above
Description : Consider the following statements: 1. Dry rot in sap wood is caused by fungal attack 2. Brown rot in coniferous woods is a result of fungal attack 3. Alternate wetting and drying of unseasoned timber causes powdery' form of decay in ... ? (a) 1, 2 and 3 b)1 and 2 only c)2 and 3 only d)1 and 3 only
Last Answer : (a) 1, 2 and 3
Description : The process of consolidating concrete mix after placing it in position is termed as. (a) Curing (b) Wetting (c) Compaction (d) All of these
Last Answer : (c) Compaction
Description : Polymerization helps to improve the property of (A) Strength (B) Rigidity (C) Elasticity (D) All of these
Description : Consider the following statements: Percentage of steel for balanced designed of a singly reinforced rectangular section by limit state method depends on (1) Characteristic strength of concrete (2) Yield strength of concrete (3) Modulus of elasticity ... (b) 1, 3 and 4 (c) 1, 2 and 4 (d) 1, 2 and 3
Last Answer : 1,2,4
Description : The critical exist gradient of seepage water in soils, increases with (A) An increase in specific gravity (B) A decrease in specific gravity (C) A decrease in void ratio (D) Both (a) and (c)
Description : Soils containing organic matters (A) Are of spongy nature (B) Swell with decrease of moisture (C) Shrink with increase of moisture content (D) None of these
Description : When the compaction energy increases the compaction of soils: (a) Both of OMC and maximum dry density decrease (b) Both of OMC and maximum dry density increase (c) OMC decreases but maximum dry density decrease (c) OMC increases but maximum dry density increase
Last Answer : (c) OMC decreases but maximum dry density decrease
Description : For a loose sand sample and a dense sand sample consolidated to the same effective stress (A) Ultimate strength is same and also peak strength is same (B) Ultimate strength is different but peak strength ... of dense sand is greater than that of loose sand (D) Ultimate strength is same but peak
Last Answer : (C) Ultimate strength is same but peak strength of dense sand is greater than that of loose sand
Description : For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as (A) Dry of OMC and wet of OMC (B) Wet of OMC and dry of OMC (C) Wet of OMC and wet of OMC (D) Dry of OMC and dry of OMC where OMC is optimum moisture content
Description : The plasticity of fine soils may be assessed by means of (A) Dry strength test (B) Toughness test (C) Dilatancy test (D) All of these
Description : Consider the following statements relating to foundations on expansive soils: 1. Strength should be improved and compressibility should be reduced. 2. Compressibility should be increased. 3. No stabilization should be done. Which of these ... ? (a) 1, 2 & 3 (b) 2 only (c) 1 only (d) 3 only
Last Answer : (c) 1 only
Description : If the cohesive force (c), is 1.5 t/m2 , the density ) of the soil is 2.0 t/m3 , factor of safety (F) is 1.5 and stability factor (Sn) is 0.05, the safe height of a slope, is (A) 5 metres (B) 8 metres (C) 10 metres (D) 12 metres
Last Answer : (C) 10 metres
Description : If S, L and R are the arc length, long chord and radius of the sliding circle then the perpendicular distance of the line of the resultant cohesive force, is given by (A) a = S.R/L (B) a = L.S/R (C) a = L.R/S (D) None of these
Last Answer : (A) a = S.R/L
Description : A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm². The settlement of a prototype shallow footing 1 m square under the same intensity of loading is (A) 15 mm (B) 30 mm (C) 50 mm (D) 167 mm
Last Answer : (C) 50 mm