Download 1 (a) Explain elastic rebound theory

M. Tech DEGREE EXAMINATION
Branch: Civil Engineering
Specialization: Computer Aided Structural Engineering
MCESE 205.1 EARTHQUAKE RESISTANT DESIGN OF STRUCTURES
(Elective III)
Second Semester
Model Question Paper - II
Time: 3 hours
Maximum: 100 marks
Answer all questions
IS: 1893-2002 and IS: 13920 are permitted
1 (a) Explain elastic rebound theory.
(b) Explain the classification of earthquake waves.
(c) Explain fault, dip and their role in formation of earthquake.
(d) Explain the principle of working of a seismograph with the help of sketches.
(e) Explain magnitude of earthquake`
(25 marks)
OR
2 (a) Explain modified Mercalli’s scale of intensity of earthquake.
(b) Explain liquefaction and its effect on structures resting n them
(c) Explain tectonic plates and its importance in the study of earthquakes.
(d) Discuss secondary hazards of earthquake.
(e) Explain the terms hypocentre, epicenter and focus
(25 marks)
3 (a) Explain plan irregularities in multistoried buildings and their effect on seismic
behaviour, analysis and design of such buildings.
(10 marks)
(b) What is meant by pseudo velocity and pseudo acceleration.
(5 marks)
(c) Explain the importance of torsional mode of oscillation in buildings. (5 marks)
(d) Explain soft storey in buildings.
(5 marks)
OR
4 (a) Explain the procedure for design of a shear wall as per IS 13920:1993.
(b) Explain the concept of response spectrum.
(10 marks)
(8 marks)
[P.T.O]
(c) Plan of a simple single storied building is shown below. All beams and columns have
same cross section. Find centre of stiffness.
(7 marks)
3m
8m
4m
4m
4m
Fig 1
5 (a) Explain ductility demand. How is it ensured in RC framed structures? (10 marks)
(b) Figure below shows a plan of 6 storey RC framed structure to be constructed in
Delhi. Height of each storey is 3.5 m All columns of 230x450mm and all beams of
230x500mm. Slab thickness is 120mm. Wall around is 230mm thick. Calculate seismic
forces at each floor level. Assume relevant data.
(15 marks)
4 @ 5m
3 @ 6m
Plan
[P.T.O]
OR
6 (a) Explain retrofitting in structures.
(10 marks)
(b) Differentiate the behaviour of infilled frame from that of braced frame during
earthquake.
(8 marks)
(c) Explain hysterisis loop of RCC under cyclic loading and discuss pinching
effect.
(7 marks)
7 (a) Explain prominent past earthquakes in India. Discuss any one in detail and
lessons learnt from it.
(b) What are the various methods for reduction of earthquake effects on
buildings?
(c) What are the global deficiencies for a building from point of view of
earthquake resistance?
(d) Write a note on inherent damping systems in RCC and steel frames. (25 marks
OR
8 (a) Explain base isolation in buildings
(b) Discuss with sketches the effect of openings on the performance of masonry
walls under laterals shaking due to earthquakes.
(c) Sketch the details of RCC band to be provided at the plinth level of a two
storied base masonry building.
(25 marks)