GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (OLD) EXAMINATION - WINTER 2018
Subject Name: Earthquake Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
3. Figures to the right indicate full marks.
4. Use of IS 1893 and IS 13920 is permitted.
Q.1 (a) Define following (1) Magnitude of Earthquake (2) Damping (3) Ductility (4) Faults (5) Seismograph (6) Epicenter (7) Resonance [07]
Q.1 (b) Derive an equation of Equivalent Spring Constant for a system in which (1) Springs are in Parallel and (2) Springs are in Series [07]
Q.2 (b) A spring mass model consists of 15 kg mass and spring of stiffness 25 N/mm was tested for viscous damped vibration. The test recorded two consecutive amplitude is 2.0 cm and 1.5 cm respectively. Determine (i) Natural frequency of un-damped system (i1) Logarithmic decrement (iii) Damping ratio (iv) Damping coefficient (v) Damped natural period. [07]
OR
Q.2 (b) An empty elevated water tank is pulled by a steel cable by applying a 50 kN force horizontally and displaced by 6 cm. The cableis suddenly cut and the resulting free vibration is recorded. At the end of the six complete cycles, the time is 3 seconds and the amplitude is 2.5 cm. Determine the damping ratio, natural period of undamped vibration, effective stiffness, effective weight and damping coefficient. [07]
Q.3 (a) Write short note on Seismic Waves. [07]
OR
Q.3 (a) Explain the term Degree of Freedom in detail. [07]
Q.3 (b) Explain the earthquake resistant features of Masonry Buildings as per 1.S. Code. [07]
Q.4 (a) Explain the philosophy of Earthquake Resistant Design. [07]
OR
Q.4 (a) Explain soft storey and storey drift in details. [07]
Q.4 (b) Write short note on Rigid Diaphragm Effect. [07]
Q.5 (a) Explain in detail the Portal Method of analysis of frames. [07]
OR
Q.5 (a) Write short note on Liquefaction and remedial measures. [07]
Q.5 (b) Explain the criteria for ductile detailing of column as per IS: 13920. [07]
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (OLD) EXAMINATION - WINTER 2018
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Subject Code:160605 Date: 20/11/2018Subject Name: Earthquake Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
--- Content provided by FirstRanker.com ---
2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
4. Use of IS 1893 and IS 13920 is permitted.
Q.1 (a) Define following (1) Magnitude of Earthquake (2) Damping (3) Ductility (4) Faults (5) Seismograph (6) Epicenter (7) Resonance [07]
Q.1 (b) Derive an equation of Equivalent Spring Constant for a system in which (1) Springs are in Parallel and (2) Springs are in Series [07]
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Q.2 (a) Derive the expression for the response of Single Degree Free Damped Structural System. [07]Q.2 (b) A spring mass model consists of 15 kg mass and spring of stiffness 25 N/mm was tested for viscous damped vibration. The test recorded two consecutive amplitude is 2.0 cm and 1.5 cm respectively. Determine (i) Natural frequency of un-damped system (i1) Logarithmic decrement (iii) Damping ratio (iv) Damping coefficient (v) Damped natural period. [07]
OR
Q.2 (b) An empty elevated water tank is pulled by a steel cable by applying a 50 kN force horizontally and displaced by 6 cm. The cableis suddenly cut and the resulting free vibration is recorded. At the end of the six complete cycles, the time is 3 seconds and the amplitude is 2.5 cm. Determine the damping ratio, natural period of undamped vibration, effective stiffness, effective weight and damping coefficient. [07]
Q.3 (a) Write short note on Seismic Waves. [07]
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Q.3 (b) Explain the failure mechanism of Masonry Buildings due to action of Earthquake. [07]OR
Q.3 (a) Explain the term Degree of Freedom in detail. [07]
Q.3 (b) Explain the earthquake resistant features of Masonry Buildings as per 1.S. Code. [07]
Q.4 (a) Explain the philosophy of Earthquake Resistant Design. [07]
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Q.4 (b) Write short note on Short Column Effect. [07]OR
Q.4 (a) Explain soft storey and storey drift in details. [07]
Q.4 (b) Write short note on Rigid Diaphragm Effect. [07]
Q.5 (a) Explain in detail the Portal Method of analysis of frames. [07]
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Q.5 (b) Describe the Jacketing technique for RCC columns and beams through illustrative sketches. [07]OR
Q.5 (a) Write short note on Liquefaction and remedial measures. [07]
Q.5 (b) Explain the criteria for ductile detailing of column as per IS: 13920. [07]
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