Negative skin friction on piles (A) Is caused due to relative settlement of the soil (B) Is caused in soft clays (C) Decreases the pile capacity (D) All of the above

Negative skin friction on piles
(A) Is caused due to relative settlement of the soil
(B) Is caused in soft clays
(C) Decreases the pile capacity
(D) All of the above
by

1 Answer

Answer :

Answer: Option D
by

Related questions

Negative skin friction (A) Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile (B) Develops due to lowering of ground water (C) Both (a) and (b) (D) Neither (a) not (b)

Description : Negative skin friction (A) Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile (B) Develops due to lowering of ground water (C) Both (a) and (b) (D) Neither (a) not (b)

Last Answer : Answer: Option C

Pick up the correct statement from the following: (A) The bearing capacity of a pile is defined as the load which can be sustained by the pile without producing excessive settlement (B) The safe bearing capacity of a pile is obtained by dividing the ultimate bearing capacity with a suitable factor of safety (C) The factor of safety for piles is taken as 6 (D) All the above

Description : Pick up the correct statement from the following: (A) The bearing capacity of a pile is defined as the load which can be sustained by the pile without producing excessive settlement (B) The safe bearing capacity ... of safety (C) The factor of safety for piles is taken as 6 (D) All the above

Last Answer : Answer: Option D

In places where the soil is soft and has small resistance to the flow of concrete, which one of the following types of piles, is used (A) Vibro pile (B) Pressure pile (C) Franki pile (D) Pedestal pile

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Last Answer : Answer: Option A

Best type of piles for soft soil having little resistance to the flow of concrete, is (A) Simplex pile (B) Vibro pile (C) Raymond pile (D) Franki pile

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Consider the following statements: 1. Friction piles are also called floating piles 2. Minimum number of piles to qualify as a pile group is three. 3. The group efficiency of a pile group may be either less than 100% or more than 100%. Which of these statements are correct? (a) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only

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Which one of the following statements is true? (A) Clays are more porous than sands (B) Pressure of organic matter in a soil decreases the bearing capacity of the soil (C) Aluminous cement is used for foundations in soils with chemical deposits (D) All the above

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The bearing capacity of piles is determined by (A) Dynamic formula (B) Static formula (C) Pile load tests (D) All the above

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The internal molecular attraction of a soil, the cohesion (A) Decreases as the moisture content increases (B) Increases as the moisture content decreases (C) Is more in well compacted clays (D) Depends upon the external applied load

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Unconfined compression test it most suitable for determining the : 1. Sensitivity of clays 2. Settlement of embankments 3. ‘Strength’ of partially saturated clay sample 4. ‘Strength’ of fully saturated clay sample (a) 1, 2, 3 and 4 (b) 2 and 3 only (c) 3 and 4 only (d) 1 and 4 only

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Last Answer : (d) 1 and 4 only

The steel pile which is generally sunk in soft clay or loose sand of low bearing capacity, is (A) H-pile (B) Pipe pile (C) Screw pile (D) Disc pile

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In soft clay of low bearing capacity, the type of steel pile generally used, is (A) H-pile (B) Screw pile (C) Disc pile (D) Pipe pile

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Which one of the following piles has a cast iron shoe even after removal of the hollow cylindrical steel casing? (A) Simplex pile (B) Pedestal pile (C) Vibro pile (D) Both (a) and (c) of the above

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Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The sand in the sand pile is well compacted (B) The sand is kept moist at the time of placing and tamping (C) Sand piles are generally used under column loads (D) All of the above

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In case of Raymond pile (A) Lengths vary from 6 m to 12 m (B) Diameter of top of piles varies from 40 cm to 60 cm (C) Diameter of pile at bottom varies from 20 cm to 28 cm (D) All the above

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Last Answer : Answer: Option D

The angle of internal friction of clays, is usually (A) 0° to 5° (B) 5° to 20° (C) 20° to 30° (D) 30° to 45

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Last Answer : Answer: Option B

The angle of internal friction, is least for (A) Angular-grained loose sand (B) Angular -grained dense sand (C) Round-grained loose sand (D) Clays

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Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) A pile is a slender member which transfers the load through its lower end on a strong strata (B) A pile is a slender member which transfers its load to the surrounding soil (C) A pile is a slender member which transfers its load by friction (D) A pile is a cylindrical body of concrete which transfers the load at a depth greater than its width

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Pick up the incorrect statement from the following: (A) The width of the wall is constructed thicker at the base in a stepped fashion (B) A long vertical load transferring concrete structure is called a concrete pile (C) In pile which transfers the load to the soil by the friction between the pile and the surrounding soil is called friction pile (D) The pile which transfers the load to a hard rock bed at certain depth is called load bearing

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The compressibility of clays is caused due to: (A) Expulsion of double layer water from in between the grains (B) Sliping of particles to new positions of greater density (C) Bending of particles as elastic sheets (D) All the above

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The pile which supports the load due to friction between pile face and surrounding soil, is generally known as (A) Bearing pile (B) Friction pile (C) Sheet pile (D) Battered pile

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Bearing capacity of soils cannot be improved by (A) Draining sub-soil water (B) Ramming crushed stone in soil (C) Driving sand piles (D) Watering surface of soil

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Last Answer : Answer: Option D

Coefficient of consolidation for clays normally (A) Decreases with increase in liquid limit (B) Increases with increase in liquid limit (C) First increases and then decreases with increase in liquid limit (D) Remains constant at all liquid limits

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In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed (A) 10 mm (B) 15 mm (C) 20 mm (D) 25 mm

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Last Answer : Answer: Option D

Place three piles of matches on a table, one with 11 matches, the second with 7, and the third with 6. You are to move matches so that each pile holds 8 matches. You may add to any pile only as many matches as it already contains. All the matches must come from one other pile. For example, if a pile holds 6 matches, you may add 6 to it, no more or less. You have three moves. -Riddles

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Last Answer : First pile to second; second to third; third to first:Pile Initial number First move Second move Third move First1111-7=444+4=8Second77+7=1414-6=88Third666+6=1212-4=8

Pick up the correct statement from the following: (A) The pile driven in sand is called sand pile (B) The drilled hole filled with sand is called sand pile (C) The sand piles are used for bearing purposes (D) None of these

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The minimum centre to centre distance of friction piles of 1 m diameter, is (A) 2 m (B) 2 m to 3 m (C) 3 m to 4 m (D) 5 m

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Last Answer : (C) 3 m to 4 m

The advantage of a concrete pile over a timber pile, is (A) No decay due to termites (B) No restriction on length (C) Higher bearing capacity (D) All the above

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Most suitable material for highway embankments is (A) Granular soil (B) Organic soil (C) Silts (D) Clays

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Last Answer : Answer: Option C

The type of pile which is driven at an inclination to resist inclined forces is known as (A) Friction pile (B) Sheet pile (C) Batter pile (D) Anchor pil

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The ultimate consolidation settlement of a structure resting on a soil (A) Decreases with the increase in the initial voids ratio (B) Decreases with the decrease in the plastic limit (C) Increases with the increase in the initial voids ratio (D) Increases with the decrease in the porosity of the soil

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Last Answer : (C) Both allowable settlement and ultimate bearing capacity

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Last Answer : Answer: Option A

While investigating the site, a thick layer of fairly firm clay over a deep layer of soft clay is encountered. In such a situation, the following type of foundation is useful: (A) Pile formation (B) Raft foundation (C) Grillage foundation (D) None of these

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Last Answer : Answer: Option B

During percussion drilling (A) Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole (B) Caving or mixing of strata are caused in soft soils or cohesionless soils (C) The soil to a considerable depth below the bottom of the hole gets disturbed (D) All the above

Description : During percussion drilling (A) Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole (B) Caving or mixing of strata are caused in soft soils or ... The soil to a considerable depth below the bottom of the hole gets disturbed (D) All the above

Last Answer : Answer: Option D

The additional piles which are driven to increase the capacity of supporting loads on vertical piles, are known (A) Construction piles (B) Raking piles (C) Eccentric piles (D) Sinking piles

Description : The additional piles which are driven to increase the capacity of supporting loads on vertical piles, are known (A) Construction piles (B) Raking piles (C) Eccentric piles (D) Sinking piles

Last Answer : Answer: Option B

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 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

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A pile is being driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If the penetration with last blow is 5 mm, the load carrying capacity of the pile, -according to the Engineering News formula, is (A) 100 tonnes (B) 50 tonnes (C) 20 tonnes (D) 10 tonnes

Description : A pile is being driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If the penetration with last blow is 5 mm, the load carrying capacity of the pile, -according to the Engineering News formula, is (A) 100 tonnes (B) 50 tonnes (C) 20 tonnes (D) 10 tonnes

Last Answer : (D) 10 tonnes

The maximum load carried by a pile, when it continues to sink without further increase of load, is known as (A) Ultimate load carrying capacity (B) Ultimate bearing capacity (C) Ultimate bearing resistant (D) All the above

Description : The maximum load carried by a pile, when it continues to sink without further increase of load, is known as (A) Ultimate load carrying capacity (B) Ultimate bearing capacity (C) Ultimate bearing resistant (D) All the above

Last Answer : Answer: Option D

Engineering news formula for obtaining safe bearing capacity of pile for drop hammer, is, (A) Q = Wh/6 (S + 2.5) (B) Q = Wh/2.5 (S + 6) (C) Q = (W × 6)/h (S + 2.5) (D) Q = (W × 2.5)/6 (S + h)

Description : Engineering news formula for obtaining safe bearing capacity of pile for drop hammer, is, (A) Q = Wh/6 (S + 2.5) (B) Q = Wh/2.5 (S + 6) (C) Q = (W × 6)/h (S + 2.5) (D) Q = (W × 2.5)/6 (S + h)

Last Answer : Answer: Option A

Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C) Effective angle of internal friction for a soil increases as state of compactness increases. (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.

Description : Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C ... (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.

Last Answer : Answer: Option A

The least bearing capacity of soil is that of (A) Hard rock (B) Moist clay (C) Soft rock (D) Coarse sandy soil

Description : The least bearing capacity of soil is that of (A) Hard rock (B) Moist clay (C) Soft rock (D) Coarse sandy soil

Last Answer : Answer: Option B

Raft foundations are used for: (A) Providing increased area of foundation over poor bearing capacity of soil (B) Spanning over small soft or loose pockets (C) Counter acting the hydrostatic effect (D) All the above

Description : Raft foundations are used for: (A) Providing increased area of foundation over poor bearing capacity of soil (B) Spanning over small soft or loose pockets (C) Counter acting the hydrostatic effect (D) All the above

Last Answer : Answer: Option D

The pile provided with one or more bulles in its vertical shaft, is generally known as (A) Under-ream pile (B) Friction pile (C) Bearing pile (D) Sheet pile

Description : The pile provided with one or more bulles in its vertical shaft, is generally known as (A) Under-ream pile (B) Friction pile (C) Bearing pile (D) Sheet pile

Last Answer : Option A

Differentiate between ‘End bearing Pile’ and ‘Friction Pile’.

Description : Differentiate between ‘End bearing Pile’ and ‘Friction Pile’.

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The ratio of the undrained strength in the undrained state to the undrained strength, at the same water content, in the remoulded state, is called the sensivity of the clay. Its value for quick clays is (A) 4 (B) 8 (C) 12 (D) 20

Description : The ratio of the undrained strength in the undrained state to the undrained strength, at the same water content, in the remoulded state, is called the sensivity of the clay. Its value for quick clays is (A) 4 (B) 8 (C) 12 (D) 20

Last Answer : (D) 20

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

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Last Answer : (B) Clays

Which one of the following clays behaves like a dense sand? (A) Over-consolidated clay with a high over-consolidation ratio (B) Over-consolidated clay with a low over-consolidation ratio (C) Normally consolidated clay (D) Under-consolidated clay

Description : Which one of the following clays behaves like a dense sand? (A) Over-consolidated clay with a high over-consolidation ratio (B) Over-consolidated clay with a low over-consolidation ratio (C) Normally consolidated clay (D) Under-consolidated clay

Last Answer : Answer: Option A

Pick up the correct statement from the following: (A) The baked earth is called terra-cotta (B) The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware (C) The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware (D) All the above

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Last Answer : Answer: Option D