Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2174003 Design Of Steel And Masonary Structure Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2174003 Date:25/01/2021
Subject Name:Design of Steel and Masonary Structure
Time:10:30 AM TO 12:30 PM Total Marks: 47
Instructions:
1. Attempt any THREE questions from Q.1 to Q.6.
2. Q.7 is compulsory.
3. Make suitable assumptions wherever necessary.
4. Figures to the right indicate full marks.
MARKS
Q.1 (a) What the below mentioned terms mean?
03
i) Class 4.8 bolt
ii) Class 8.8 bolt
(b) Illustrate different types of loads to be considered in the design of steel
04
structure.
(c) A single bolted double cover butt joint is used to connect two plates of 8
07
mm tickness. Considering the bolts of 20 mm diameter at 55 mm pitch,
calculate the efficiency of the joint. Use 410 MPa plates and 4.6 grade
bolts.
Q.2 (a) Explain the use of Purlin.
03
(b) Differentiate laterally supported beam and laterally unsupported beam.
04
(c) Design a column to carry an facored axial load of 1500 kN. The actual
07
length of the column is 5 m. Both the ends of the column are effectively
held in the position but restrained against rotation. Select two channel
sections back to back. Take column as laced and fy = 250 MPa.
Q.3 (a) Write a short note on effective length of prismatic compression members
03
(b) Why bracing is important in Industrial building?
04
(c) Calculate the compressive strength of 2 ISA 80x80x8 mm connected on
07
either side of a 8 mm thick gusset plate. It is effectively held in the position
at both the ends but restrained against rotation at one end. The member is
3 m long where yield stress is 250 MPa.
Q.4 (a) Differentiate between Bolted Connection and Welded Connection in the
03
steel structures .
(b) Write a short note on `Shear lag'.
04
(c) Design a tension member to carry a factored load of 180 kN. Use single
07
unequal angle with 5 mm fillet weld for the connection to gusset plate.
The member is 3 m long. Take fy = 250 MPa, fu = 410 MPa.
Q.5 (a) Write short note on Lug Angles with necessary sketch.
03
(b) Explain failure of bolted joint with suitable example
04
(c) Design a welded plate girder for 28 m span to support a uniformly
07
distributed load of 70 kN/m over whole span along with two moving
loads of 80 kN each spaced at 8 m apart. The girder is laterally supported
throughout. Use steel grade of Fe410 both for Flange as well as web.
(Note:No need to Design of weld connection for flange plate and web
plate).
Page 1
Q.6 (a) Enlist various components of plate girder.
03
(b) What are the elements of Industrial Truss?
04
(c) Design a simply supported gantry girder to be used in an Industrial
07
building for the following data:
Crane Capacity = 120 kN
Weight of crab = 30 kN
Weight of crane (excluding crab) = 150 kN
Minimum clearance between crane hook and gantry girder = 1 m
Wheel base = 3 m
Distance between centre to centre of gantries = 18 m
Distance between centre to centre of gantry columns = 6 m
Crane type = M.O.T. (Note: Checks are not required)
Q.7
What are the good construction practices in Earthquake resistant design
05
of masonry structures?
OR
Differentiate reinforced and unreinforced masonry structures.
05
*************
Page 2
This post was last modified on 04 March 2021