Introduction to Earthquake Engineering

Solve any one question fromQ.1(a,b) and Q.2(a,b)

(a) Define:

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1) Soft Storey and Weak storey

ii) Epicenter

ii) Iso-seismal

1(b) Expalin the causes and types of earthquake based on various

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parameters.

2(a) Classify and describe different types of waves generated during

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earthquake

2(b) What do you understand by Internsity of earthquake? Classify the

earthquake based on magnitude

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Solve any one question fromQ.3 and Q.4(a,b)

3 What are the different types of vibrations? Explain the concept of Logarithmic Decrement

4(a) Derive the equation of motion for a damped but free vibration of a SDOF system.

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4(b) A vibratory system is defined by following parameters- Mass-3kg. spring stiffness- 100kN/m, and damping coefficient-3N sec/m.

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Determine

1) Damping factor

ii) Natural frequency of damped vibrations.

Solve any one question fromQ.5 and Q.6"

5 Explain the following (Any Two): a) Seismic Zoning

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b) Vertical irregularity in buildings

c) Tectonic Features of India

6 A three storeyed symmetrical RC School building situated at Bhuj

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with the following data.

a) Plan Dimensions: 7m 7m

b) Storey Height: 3.5m.

c) Total weight of beams/storey-130kN, d) Total weight of slab / storey-250kN.

e) Total weight of columns/storey-50kN,

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f) Total weight of walls/ storey- 530kN,

g) Total Live Load=130kN. Addititonal weight on terrace floor is 655 KN. The structure is resting on hard rock. Determine seismic weight of building and hence find the total base shear and lateral loads at each floor levels using seismic coefficient method.

Solve any one question fromQ.7and Q.8(a,b,c)

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7 A 500mm 500mm column is supported on isolated footing. The load coming on the footing is 550KN and a moment of 50 KN-m due to lateral loads. The SBC of the soil is 150kN/m using M25 grade of concrete and steel of grade Fe415, design the footing.

8(a) Write types and effects of soil liquefaction.

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8(b) What are the different soil improvement techniques to reduce liquefaction

8(c) What type of forces generated due to earthquake and explain its

effect on Foundation.

Solve any one question fromQ.9(a,b) and Q.10(a,b)

9(a) What is disaster management? Expalin various phases of disaster

management?

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9(b) What are the basic precaution to be followed in rescue operations.

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10(a) What are the various methods available to control the lateral

forces acting on a structure? Explain in details.

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10(b) Define Active and Passive control. Write different types of the passive control system and explain any one example.

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Solve any one question fromQ.11(a,b) and Q.12(a,b)

11(a) What is retrofitting of structures? Explain its need for the buildings?

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11(b) Explain any three retrofitting techniques used for traditional buildings

12(a) Explain the techniques used for stregthening RCC beams and Columns.

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12(b) Define and explain the RCC Shear Wall and its behavior.

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