Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 8th Sem 2180610 Design Of Steel Structures Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VIII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2180610 Date:28/01/2021
Subject Name:Design of Steel Structures
Time:02:00 PM TO 04:00 PM Total Marks: 47
Instructions:
1. Attempt any THREE questions from Q.1 to Q.6.
2. Q7 is compulsary
3. Make suitable assumptions wherever necessary.
4. Figures to the right indicate full marks.
5. Use of IS: 800, IS: 875 and Steel Tables is permitted, provided that they do
not contain anything other than the printed matter inside.
6. Consider fy = 250 N/mm2 and fu = 410 N/mm2 if not mention.
MARKS
Q.1 (a) What are risk co-efficient, terrain factor and topography factor ?
03
(b) Write design consideration for heavy moment resisting bolted
04
connection.
(c) Determine the plastic moment capacity and plastic modulus of section of the
07
unsymmetric section shown in Fig 01.
Q.2 (a) Explain the analysis of roof column in Industrial building.
03
(b) Explain the failure of a riveted joint with suitable examples.
04
(c) The following data refers to a welded plate girder of span 24 m to carry
07
superimposed load of 35 kN/m. Avoid use of bearing and intermediate
stiffeners. Use Fe 415 (E250) steel. find out
1. Moment and shear force
2. Depth of web plate.
3. Selection of Flange.
4. Check for moment capacity of the girder.
5. Shear resistance of web.
Q.3 (a) Distinguish between elastic modulus and plastic modulus.
03
(b) Explain simple post critical method to evaluate shear strength of web of plate
04
girder as per IS 800:2007
(c) Using the following data calculate total W.L. on the truss.
07
I.
Total roof area = 72m2
II.
Risk factor K1 & Topography factor K3 =1
III.
Terrain factor K2
IV.
Cpi = ? 0.5
V.
Cpe = - 0.8
VI.
Place = Ahmedabad
Q.4 (a) Define: Rivet line, butt joint, Purlins.
03
(b) Enlist advantages and disadvantages of steel structures.
04
(c)
Using the following data calculate wind load per panel point of a roof truss.
07
I.
Place = Indore
II.
Type of truss = Fink truss with slope equal to 260.
III.
No. of panels on each sloping side = 4
IV.
Opening of wall area = 16%
V.
Probable life of structure = 50 years.
1
VI.
Terrain category = 3 with class B type structure.
VII.
Topography factor = 1.00
VIII.
Total slope area= 68 m2,h/w =0.75, Height =15 m.
Q.5 (a) Explain Lateral load due to Wind and Seismic as per I.S. Standard.
03
(b) Write various types of truss girder.
04
(c) Design the welded connection to connect two plates of width 200 mm and
07
thickness 10 mm for 100 percent efficiency.
Q.6 (a) What you understand by class 4.6 and class 8.8 bolts? Explain briefly
03
(b) Explain the following connections with neat sketches: beam to beam web
04
angle connection, beam to column flange seat angle connection
(c) Find the efficiency of the lap joint shown in Fig 02 Given M20 bolts and
07
grade 4.6 and Fe 410 (E 250) plates are used.
Q.7 (a) Explain effect of wind load on structure.
05
OR
Q.7 (a) Derive the collapse load for fixed beam of length L, subjected to
05
concentrated load W at centre.
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This post was last modified on 04 March 2021