Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 5th Sem Old 150605 Structural Analysis Iii Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (OLD) EXAMINATION ? WINTER 2018
Subject Code:150605 Date: 27/11/2018
Subject Name: Structural Analysis - III
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.
Q-1 (a) Explain type of domes with neat sketches and state their uses. 7
(b) Differentiate between stiffness method and flexibility method. 7
Q-2 (a) A beam in plan has radius of 8m and is supported at equally spaced 8
supports. It is loaded by a UDL of 40 KN/m. calculate the maximum values
of bending moment and shear force.
7
(b) Give the properties of flexibility and stiffness matrix. 7
OR
(b) Define the following terms:
Dome, Shape factor, Load factor, collapse load, Plastic hinge, Released
structure, Restrained structure.
7
Q-3 (a) State and explain the basic assumptions made in the plastic theory. 7
(b) For the beam section shown in figure-1, determine the shape factor and the
fully plastic moment. Take f y = 250 MPs.
7
OR
Q-3 (a) Calculate the shape factor for the hollow rectangular section having outer
dimension 300 mm ? 150 mm and thickness 10mm.
7
(b) State and explain static theorem and kinematic theorem of plastic theory.
7
Q-4 (a) Differentiate between straight beam and curved beam. 7
(b) A roof of a hall having diameter 20 m is to be covered by a conical dome of
100 mm thickness and 4 m rise. Assuming live load and other loads as 1.5
KN/m
2
, calculate stresses in the dome.
7
OR
Q-4 (a) Derive an expression for M ? and T ? for a curved beam fixed at the ends. 7
(b) A spherical dome with a span of 15m and central rise of 3m has all inclusive
load of 10 KN/m
2
. Calculate all the stresses at the mid height.
7
Q-5 (a) Find the matrices: [AD] , [ADL] , [S] and [D] with usual notations for the
beam shown in Figure-2, using Stiffness method.
7
(b) Find the matrices: [DQ], [DQL] , [F] and [Q] with usual notations for the
beam shown in Figure-2. Use Flexibility method assuming vertical support
reaction at B (RB) and vertical support reaction C (RC) as redundant.
7
OR
Q-5 (a) Derive the Flexibility Matrix [F] for the beam shown in Figure-3, assuming
vertical reactions at supports B, C and D as redundant.
7
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (OLD) EXAMINATION ? WINTER 2018
Subject Code:150605 Date: 27/11/2018
Subject Name: Structural Analysis - III
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.
Q-1 (a) Explain type of domes with neat sketches and state their uses. 7
(b) Differentiate between stiffness method and flexibility method. 7
Q-2 (a) A beam in plan has radius of 8m and is supported at equally spaced 8
supports. It is loaded by a UDL of 40 KN/m. calculate the maximum values
of bending moment and shear force.
7
(b) Give the properties of flexibility and stiffness matrix. 7
OR
(b) Define the following terms:
Dome, Shape factor, Load factor, collapse load, Plastic hinge, Released
structure, Restrained structure.
7
Q-3 (a) State and explain the basic assumptions made in the plastic theory. 7
(b) For the beam section shown in figure-1, determine the shape factor and the
fully plastic moment. Take f y = 250 MPs.
7
OR
Q-3 (a) Calculate the shape factor for the hollow rectangular section having outer
dimension 300 mm ? 150 mm and thickness 10mm.
7
(b) State and explain static theorem and kinematic theorem of plastic theory.
7
Q-4 (a) Differentiate between straight beam and curved beam. 7
(b) A roof of a hall having diameter 20 m is to be covered by a conical dome of
100 mm thickness and 4 m rise. Assuming live load and other loads as 1.5
KN/m
2
, calculate stresses in the dome.
7
OR
Q-4 (a) Derive an expression for M ? and T ? for a curved beam fixed at the ends. 7
(b) A spherical dome with a span of 15m and central rise of 3m has all inclusive
load of 10 KN/m
2
. Calculate all the stresses at the mid height.
7
Q-5 (a) Find the matrices: [AD] , [ADL] , [S] and [D] with usual notations for the
beam shown in Figure-2, using Stiffness method.
7
(b) Find the matrices: [DQ], [DQL] , [F] and [Q] with usual notations for the
beam shown in Figure-2. Use Flexibility method assuming vertical support
reaction at B (RB) and vertical support reaction C (RC) as redundant.
7
OR
Q-5 (a) Derive the Flexibility Matrix [F] for the beam shown in Figure-3, assuming
vertical reactions at supports B, C and D as redundant.
7
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2
(b) Derive the Stiffness matrix [S] for the beam shown in Figure-3. 7
Figure: 2
Figure: 1
Figure: 3
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This post was last modified on 20 February 2020