Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 6th Sem Old 160605 Earthquake Engineering Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI (OLD) EXAMINATION ? WINTER 2018
Subject Code:160605 Date: 20/11/2018
Subject Name: Earthquake Engineering
Time: 02:30 PM TO 05:00 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 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
(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 (a) Derive the expression for the response of Single Degree Free Damped Structural
System.
07
(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 (ii) Logarithmic decrement (iii) Damping ratio (iv) Damping coefficient (v)
Damped natural period.
07
OR
(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 cable is 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
(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
(b) Explain the earthquake resistant features of Masonry Buildings as per I.S. Code. 07
Q.4 (a) Explain the philosophy of Earthquake Resistant Design. 07
(b) Write short note on Short Column Effect. 07
OR
Q.4 (a) Explain soft storey and storey drift in details. 07
(b) Write short note on Rigid Diaphragm Effect. 07
Q.5 (a) Explain in detail the Portal Method of analysis of frames. 07
(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
(b) Explain the criteria for ductile detailing of column as per IS: 13920. 07
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This post was last modified on 20 February 2020