Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2170612 Earthquake Engineering Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2170612 Date: 23/11/2019
Subject Name: Earthquake Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of IS 1893 ? 2002 and IS 13920 ? 1993 is permitted.
Q.1 (a) Differentiate between magnitude and intensity 03
(b) Describe seismic waves briefly. 04
(c) Define liquefaction and explain the causes and remedial measures of liquefaction. 07
Q.2 (a) Define and explain pounding effect 03
(b) Explain Time History Analysis method 04
(c) Explain importance of various bands in masonry buildings? 07
OR
(c) Find the natural frequency of the system shown in the fig.1. 07
Q.3 (a) Define the terms ? 1. Focus 2. Base shear 3. Magnitude of Earthquake 03
(b) Describe importance of shear wall in multistoried Buildings 04
(c) Explain ductile detailings of Beam as per IS 13920 07
OR
Q.3 (a) Differentiate between inter plate and intra plate earthquake 03
(b) Elaborate elastic rebound theory 04
(c) Describe base isolation technique 07
Q.4 (a) Explain PGA. 03
(b) Describe the codal provisions for vertical reinforcement in masonry walls 04
(c) Discuss the expected damages by Earthquake in structures having
i)Unsymmetrical plan ii) Floating columns iii) Soft storey
iv) Building frams without shear panels v) Short Column
07
OR
Q.4 (a) List assumptions made in Portal frame method of lateral load analysis 03
(b) Briefly explain four virtues of earthquake resistant design 04
(c) A spring mass model consisting of 9 kg mass and a spring having stiffness 3.6
N/mm was tested for viscous damped vibration and the test record showed two
successive amplitudes as 1.75 and 1.5. Determine
1. Natural frequency of Undamped System 2. Logerithmic Decrement
3. Damping ration 4. Damping coefficient and 5. Damped natural period
07
Q.5 (a) A three story building frame with uniform floor height of 4m is having lumped
masses of 8 tonns, 6 tonns and 4 tonns at first, second and third floor respectively
with uniform storey stiffness of 1000 kN/m at each floor. Calculate natural
frequency and corresponding mode shapes for the fundamental mode only. Also
draw mode shapes.
14
OR
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2170612 Date: 23/11/2019
Subject Name: Earthquake Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of IS 1893 ? 2002 and IS 13920 ? 1993 is permitted.
Q.1 (a) Differentiate between magnitude and intensity 03
(b) Describe seismic waves briefly. 04
(c) Define liquefaction and explain the causes and remedial measures of liquefaction. 07
Q.2 (a) Define and explain pounding effect 03
(b) Explain Time History Analysis method 04
(c) Explain importance of various bands in masonry buildings? 07
OR
(c) Find the natural frequency of the system shown in the fig.1. 07
Q.3 (a) Define the terms ? 1. Focus 2. Base shear 3. Magnitude of Earthquake 03
(b) Describe importance of shear wall in multistoried Buildings 04
(c) Explain ductile detailings of Beam as per IS 13920 07
OR
Q.3 (a) Differentiate between inter plate and intra plate earthquake 03
(b) Elaborate elastic rebound theory 04
(c) Describe base isolation technique 07
Q.4 (a) Explain PGA. 03
(b) Describe the codal provisions for vertical reinforcement in masonry walls 04
(c) Discuss the expected damages by Earthquake in structures having
i)Unsymmetrical plan ii) Floating columns iii) Soft storey
iv) Building frams without shear panels v) Short Column
07
OR
Q.4 (a) List assumptions made in Portal frame method of lateral load analysis 03
(b) Briefly explain four virtues of earthquake resistant design 04
(c) A spring mass model consisting of 9 kg mass and a spring having stiffness 3.6
N/mm was tested for viscous damped vibration and the test record showed two
successive amplitudes as 1.75 and 1.5. Determine
1. Natural frequency of Undamped System 2. Logerithmic Decrement
3. Damping ration 4. Damping coefficient and 5. Damped natural period
07
Q.5 (a) A three story building frame with uniform floor height of 4m is having lumped
masses of 8 tonns, 6 tonns and 4 tonns at first, second and third floor respectively
with uniform storey stiffness of 1000 kN/m at each floor. Calculate natural
frequency and corresponding mode shapes for the fundamental mode only. Also
draw mode shapes.
14
OR
2
Q.5 Calculate base shear for the 10 story R.C. frame building for hospital located in
a city of earthquake Zone ? V, using seismic coefficient method for the following
data
1. No. of bays in X ? direction - 9
2. No. of bays in Y ? direction - 7
3. Bay width in both direction ? 4 m
4. Clear Story height below beam bottom ? 3 m
5. Thickness of Slab - 140 mm
6. Size of web of Beam - 230 mm x 460 mm
7. Size of Column - 460 mm x 600 mm
8. Internal wall thickness - 120 mm
9. External wall thickness - 250 mm
10. Live Load - 4 kN/m
2
Assume suitable data if required. Give your calculation with appropriate clause
number of code and draw shear distribution at each floor level.
14
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This post was last modified on 20 February 2020