Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2017-2018 NCE 701 Design Of Steel Structures Question Paper
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B. TECH.
(SEM VII) THEORY EXAMINATION 2017 -18
DESIGN OF STEEL STRUCTURES
T ime: 3 Hours Total Marks: 100
Note: 1. Attempt all Sections. If require any missing data; then choose suitably.
2. IS 800:2007 original copy is allowed.
SECTION A
1. Attempt all questions in brief. 2 x 10 = 20
What are the partial safety factors for materials adopted by the code?
What is the importance of wind load?
Write any four assumptions made in the design of welded joints?
What are the advantages of butt joints over lap joints?
List out some of the tension members used in bridges and buildings.
Define Gusset plate.
What do you understand by buckling of column?
Define splices.
What do you mean by laterally restraint beam?
What is local buckling of a beam member?
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SECTION B
2. Attempt any three of the following: 10 X 3 = 30
a. Distinguish between the working stress method, Ultimate strength design and
limit state design.
b. Determine the strength and efficiency of the lap joint shown in fig. the bolts are
of 20 mm diameter and of grade 4.6. The two plates to be joined are 10 mm
and 12mm thick and steel is of grade Fe?410.
c. Determine the design tensile strength of the plate 130mm*12 mm with the
holes for 16 mm diameter bolts as shown in fig. Steel used is of Fe410 grade
quality.
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d. Design a column section to be used in a public building. Column is 4.80 m long
with both of its ends restrained in direction and position in zz as well as yy
directions. The column is to support a factored load of 2500 kN.
e. Design a simply supported beam of span 5 In to carry total load of 50 kN/m.
The beam is laterally unsupported. Take fy = 250 MPa.
SECTION C
Attempt any one part of the following: 10 x 1 = 10
(a) What are the main objectives of a structural engineer while designing steel
structure?
(b) Give the chemical composition of structural steel and discuss the amount of
carbon in it. Sketch various types of rolled steel section and show their
conventional axes.
Attempt any one part of the following: 10 x 1 = 10
(a) Discuss the following :
i. Prying action
ii. Advantages Of fillet weld over butt weld
iii. (iii) Comparison of welded joints with bolted joints
(b) Design a suitable longitudinal fillet weld to connect the plates as shown in fig.
to transmit a pull equal to full strength of small plate . Plates are to be 12 mm
thick. Grade of steel plates to be used is Fe 410 and welding to be made in
workshop.
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Attempt any one part of the following: 10 x 1 = 10
(a) Determine the design tensile strength of plate 200 mm x 8 mm connected to 10
mm thick gusset using 20 mm bolts as shown in Fig. Take fy = 250 MPa and
fu 2410 MPa.
(b) Find the tension carrying capacity of single angle ISA 100mm X 100mm X
8mm connected to gusset plate by means of three bolts of 22 mm diameter at a
pitch of 80 mm c/c in one line . Use steel of grade F6410 and bolts of grade
4.6.
6. Attempt any one part of the following: 10 x 1 = 10
(a) Calculate the design compressive load for a column made up of ISHB 350 @
710.2 N/m and 3.5 m high. The column is restrained in direction and position at
both the ends. Use steel of grade Fe?410.
(b) With neat sketches , explain different types of the following :
i. Splices
ii. Base connections
7. Attempt any one part of the following: 10 x 1 = 10
(a) A steel column ISHB 250@537N/m support a total factored load of 1000 kN.
Design a slab base for the column. The column is supported on a pedestal
made of M20 concrete.
(b) Explain the following :
i. Local and lateral buckling of beam
ii. Checks required for beam design
This post was last modified on 29 January 2020