For example: In Thin cylinder topic following formulae are there:

1) Hoop Stress = Pd/2t

2) Longitudinal Stress= Pd/4t

3) Shear stress= Pd/8t

All the questions in paper 2 will be in Objective Multiple choice type only. Solving old GATE, IES, UPSC papers will help you in scoring decent marks. Following are some example questions:

1) The maximum value of Poissions ratio is -----

1) 1

2) 0

3) 0.2

4) 0.7

Answer: 1

2) The critical depth in rectangular channel is given by the relation ------

1) QT/gA=1

2) QT2 / gA2=1

3) QT3/ gA2=1

4) Q2T/ gA3=1

Answer: 2

**Paper - 3 Preparation and Model Questions:**

In Paper 3, about 40 percent questions will be asked on problems and 60 percent on theory. But in Paper -2, 70 percent of the questions will be from problems and remaining 30 percent will be on theory topics.

**Paper -3 Important Topics (Civil Engineering)**

1. Civil Engineering : Building Materials: Specifications, Typical values of different materials, Chemical composition of materials, merits and demerits

2. Structural Analysis: Strength of materials, Columns, Beams, Multi storied buildings, Slope, deflections.

3. R.C.C.: Composition of cement, concrete, sand and water, prestressed concrete structures, different grades of cements.

4. Construction planning and management: C.P.M., P.E.R.T.

5. Surveying and Transportation Engineering: Chain lengths, Temperature errors, Line of Collimation, Temporary adjustment of Theodolyte, Contours, design of pavements, National Highways, Super elevation, Global position, Different tests on Bitumen Asphalt..

6. Water Resources Engineering: Runoff, Rainfall Intensity, Catchment area, Unit of Hydrograph, Capacity of Reservoirs, Water logging, creep theory, different crop seasons, types of irrigation, duty - delta - base period.

7.Environmental Engineering: BOD, COD Plf, Water pollution, Air pollution, Sound pollution, Sewage.

8. Soil Machanics: Classification of Soils, Plasticity, liquid limit, plastic limit, Bearing capacity of soils, piles, active earth pressure, passive earth pressure, Rankine's Theory, Design of foundation.

**Model Questions:**

1. When is the angle of Internal friction of soil, passive earth pressure of soil is proportional to...

1) Tan (450 - )

2) Tan(450-)

3) Tan 2 (45-)

4) Tan2 (450)

2. The % of carbon in steel is...

1) 0.12 to 0.2

2) 0.15 to 1.5

3) 1 to 3

4) 2 to 4.5

3. Ductility test value of Bitumen is expressed in

1) mm

2) kg

3) c

4) /0c

4. The diameter of the area of a standard Symon's type rain gauge...

1) 5 cm

2) 7.5 cm

3) 10 cm

4) 12.7 cm

5. Irrigation for cereal crop is generally done by

1) Check flooding

2) Basin flooding

3) Furrow flooding

4) Sub-surface Irrigation