Questions

A short axially loaded square column 500 mm × 500 mm is subjected to service load of 2000

kN. Calculate the ultimate load and minimum area of longitudinal reinforcement as per IS 456 :

2000.

P. 30^th highest hourly volume is used for safe speed limits over a highway

Q. The summit curves length on a two lane one way road is based on non passing sight

distance.

R. Maximum traffic volume over a road is alled capacity of the road

S. Frictional Stresses in rigid pavements are compressive in summer and tensile in winter

In which type of the finish is the booster or chisel used to make non-continuous parallel marks on the stone surface?

These marks may be horizontal, inclined, or vertical.

The mechanical widening for a two lane National highway for vehicle with wheel base of 6m

while negotiating a curved path of mean radius of 200m is (Design speed 60KMPH).

A Vehicle is moving on a road applies brakes & skids through a distance of 10 m before coming

to a halt. The coefficient of linear friction between the tyres and the road is 0.35. The speed of

the vehicle just before the application of brakes is

Which of the following criteria given below are used for the design of vertical curves on roads?

1. Rider comfort

2. Headlight sight distance

3. Drainage

The error which is eliminated by changing the face is

1. Error due to the line of collimation not being perpendicular to the horizontal axis.

2. Error due to the horizontal axis not being perpendicular to the vertical axis.

3. Error due to the line of collimation not being parallel to the altitude level.

The correct answers are

In a plan, a 10 cm scale drawn shrinks to 9.7 cm. If the scale of the given plan is written as 1 :

250, the actual length of a line which at present shows 10 cm is

Which of the following statements are correct

P. Cumulative errors are directly proportional to length of chain 

Q. Compensating errors are inversely propositional to length of chain

R. Correction for slope is always negative

S. Theory of errors is applicable to compensating as well to cumulative errors also.

The following soils are compacted at the same compactive effort in the field. Which one of the following is the correct

sequence in the increasing order of their maximum dry density?

The load on a footing from a column is 800 kN. Assume self weight of footing as 10% of column

load. Safe Bearing Capacity = 300 kN/m². The size of a square footing is approximately

Assertion (A): Effective vertical stress at some depth below a river bed is unaffected by the water depth in the river.

Reason (R): Equal amounts of increase in total stress and pore pressure will not change the effective stress.

The initial and final void ratios of a clay sample in a consolidation test are 1 and 0.5,

respectively. If the initial thickness of the sample is 2.4 cm, then its final thickness will be

Which one of the following is correct in respect of pore water pressure u and effective stress s' ,

in the soil just below the bottom of a pond due to a 2 m rise in water level in the pond?

Artificial marble is made using a mixture of:

The laboratory tests on a sample yielded the following results:

Plasticity index : 32%

Liquidity index : 0.15

Activity number : 1.58

Which of the following inferences can be drawn?

1. The soil is stiff

2. The soil is medium soft.

3. The soil is highly plastic.

4. The soil is medium plastic.

5. The soil is active.

Select the correct answer using the codes given below:

For a soil the dry unit weight is 1.6 gm/cc and specific gravity is 2.68. The minimum water

content required to make the soil fully saturated is

Consider the following statements about waste stabilization ponds.

1.The pond has a symbiotic behaviour of waste stabilization through algae on one hand and

bacteria on the other.

2. The detention period for waste stabilization pond is of the order of two to three days.

3.  he oxygen in ponds is provided by algae through photosynthesis

4. The bacteria which develop in the pond, are aerobic bacteria

Which of these statements are correct?

Which one of the following principal types of reactors is related to trickling filter?

The aeration process adopted in an activated sludge plant, which ensures optimal utilization of

air, is known as

Match List-I with List-II and select the correct answer using the codes given below     

       P             Q             R              S

Anaerobically treated effluent has MPN of total coliform per 100 ml as 10⁸. After chlorination, the

MPN value per 100 ml as 10⁴. The log removal of total coliform MPN is

Match the following                     

       P            Q             R             S

Consider the following statements :

1. In a continuous flow type sedimentation tank, the particles to be removed, should have

their settling velocity more than the surface loading rate.

2. In a continuous flow type sedimentation tank, the particles which are settling, move vertically down to the bottom.

3. Coagulant added to the water containing alkalinity results in the formation of its hydroxide compound.

4. Flocculation is the process of vigorous mixing of coagulant added to the water.

 Which of these statements are correct?

The settling velocity of particles is 6m/hr and the sedimentation tank is designed for an overflow

rate of 3.5m/hr. Then the % of particles that can be removed

Match List-I (Field problems) with List-ll (Type of laboratory shear test) and select the correct answer:

सूची-I (क्षेत्रीय समस्याओं) को सूची-II (प्रयोगशाला शियर परीक्षण के प्रकार) से सुमेलित करें और सही उत्तर चुनें:

A    B    C    D

In a triaxial compression test, the major principal stress was 90 kPa and the minor principal stress was 30 kPa, at failure.

The pore pressure at failure  was observed to be 10 kPa. The tangent of the angle of shearing resistance of the sandy soil

that was tested was

Which one of the following related to domestic potable water quality is correct?

Match List I with List II and select a correct answer by using the codes given below the lists:

       A               B             C            D

At a horizontal joint of width 70 m in a gravity dam, the factor of safety against sliding is 1.05. If

the sum of all the horizontal forces above the joint is 40 MN, and the average shear strength of

the joint is 1.40 MPa, the shear friction factor at the joint is

Which of the following statements given below is not correct?

In a trickle irrigation system.

Match the following:

List-I

P.  Maximum quantity of water that a given soil can retain against force of gravity

Q.  Moisture content of a soil at which the water is no longer available in sufficient quantity to sustain plants

R.  Volume of water that can be extracted by force of gravity from a unit volume of saturated earth material

S.  Maximum rate at which a soil can absorb water through its surface

List-II

1. Specific yield

2. Infiltration capacity

3. Field capacity

4. Permanent wilting point

        P           Q              R             S

Which one of the following is an assumption made by coulomb in the development of his earth pressure theory for sand

and for active state  ?

Match the following                     

       P               Q             R            S

At time zero hour and one hour the inflow values in to a river are 20 and 40 m³ /sec

respectively. The C₀ and C₁ in the muskingham equation are 0.05 and 0.55 respectively. If the

outflow at zero were 11 m³ /sec then the corresponding outflow at one hour would be,

The ordinates of a 4 hr Unit Hydrograph of a basin of area 30,000 hectares measured at 1 hour

intervals in m³/sec are 6, 36, 66, 91, 106, 93, 79, 68

If S-curve is derived from the above UH, the ordinate of the S-curve at the end of 6 hr is

The water surface of a still pond represents a:

Match the following :                  

        P              Q            R           S

Four rain gauge stations are installed over a catchment and they recorded average rainfalls of

105, 79, 70 and 66 cm. If the coefficient of variation for the recorded values is 21.90%, the

percentage accuracy in the estimation of average rainfall for the catchment will be