PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester CIVIL Engineering (CE)

Roll No.

Total No. of Pages : 02

Total No. of Questions : 09

B.Tech.(CE) (2011 Onwards) (Sem.?6)

ELEMENTS OF EARTHQUAKE ENGINEERING

Subject Code : BTCE-602

M.Code : 71083

Time : 3 Hrs. Max. Marks : 60

INSTRUCTION TO CANDIDATES :

1.

SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks

each.

2.

SECTION-B contains FIVE questions carrying FIVE marks each and students

have to attempt any FOUR questions.

3.

SECTION-C contains T HREE questions carrying T EN marks each and students

have to attempt any T WO questions.

4.

Assume any missing data.

SECTION-A

Q1

Answer briefly :

a. Define ISO-Seismals.

b. Distinguish between compression wave (p) and shear waves (s).

c. List any 2 typical features of damages due to earthquake in masonry buildings.

d. What is transmissibility ratio?

e. What is the reason for studying the vibration of single degree of freedom system?

f. Give the expression for computing design base shear along any principal direction.

g. Write in brief about the response reduction factor.

h. Is it desirable to have high strength steel in earthquake resistance design of reinforced

concrete structure? Justify your answer.

i. What is dynamic magnification factor? Give expression also.

j. Give criteria for minimum thickness of shear wall as suggested by the IS 13920:1993.

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SECTION-B

Q2

Describe the theory of plate tectonics and also four major scientific development by the

theory.

Q3

A mass of 100 k.g is supported on springs of total stiffness of 785N/mm. The machine

produce an unbalanced disturbing force of 392 N at a speed of 50 c/s. Assuming a

damping factor of 0.2, determine :

a. The amplitude of motion due to unbalance

b. The transmissibility.

Q4

How does floor diaphragm action effects structural performance?

Q5

Describe the various factors that influence the ductility of structures.

Q6

What are ductility provisions in reinforced concrete construction?

SECTION -C

Q7

A body of mass 70 k.g is suspended from a spring with stiffness of 35 kn/m. The

damping ratio of the spring is 23% of the critical damping. If the body is subjected to a

periodic force of 700N and a frequency equal to 0.78 times the natural undamped

frequency, calculate the amplitude of forced vibrations and phase difference with respect

to the exciting force. Also calculate the natural frequency of undamped and damped

vibrations and ratio of successive amplitude for damped vibrations.

Q8

Explain the seismic behavior of masonry building during past earthquakes several lessons

learned.

Q9

a) How shear walls are classified? Derive formula to compute moment of resistance for

rectangular shear walls.

b) With the help of an example discuss the seismic design procedure of a shear wall.

Show the reinforcement details in reinforced concrete shear wall designed by you.

NOTE : Disclosure of identity by writing mobile number or making passing request on any

page of Answer sheet will lead to UMC against the Student.

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This post was last modified on 04 November 2019