Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2018-2019 NCE 701ECE 701 Design Of Steel Structures Question Paper
Paper Id: 100701 Roll No:
B TECH
(SEM-VII) THEORY EXAMINATION 2018-19
DESIGN OF STEEL STRUCTURES
Time: 3 Hours T otal Marks:100
Note:
1.Attempt all Sections. If require any missing data; then choose suitably.
2. IS 80022007 original copy is allowed. Use of steel table is allowed.
3. Assume any missing data suitably if required.
SECTION A
1. Attempt all questions in brief: 2 X 10 = 20
a)
b)
C)
d)
e)
f)
g)
h)
i)
j)
b)
Distinguish between: factor of safety and partial safety factor.
List the disadvantages of steel as a structural material.
What does 4 and 6 imply for bolts of grade 4.6. A
Why ?llet welds are preferred over butt welds.
What is shear lag effect?
What is lug angle.
What do you understand by inelastic buckling?
De?ne effective length of column.
Why is an 1- section commonly used as a beam ?
strength is low? ?
5; minor even though its lateral buckling
=1?0x3=30
Design a lap joint betwcm two plates as shown 111 ?g below so as tahtransmit a factored load of
70 kN using M16 bolts of grade 4. 6 and grade 410 plates 52: "
MANISH KUMAR JHA l 14-Dec-2018 13:41:48 i 117.55.242.131
0) Select a suitable angle section to carry a factored tensile force of 170 kN assuming a
single row of M20 bolts and assuming design strength as fy =250N/mm2.
d) Design a column to support a factored load of 1050 kN.The column has an effective
length of 7.0 m with respect to Z -axis and 5.0 m with respect to y-axis .Use steel of
grade Fe 410.
e) Design a simply supported beam of span 5m carrying a reinforced concrete ?oor capable
of providing lateral restraint to the top compression ?ange .The uniformly distributed
load is made up of 20 kN/m imposed load and 20 kN/m dead load(section is stiff against
bearing).assume Fe 410 grade steel.
SECTION C
Attempt any one part of the following: 10 X 1 = 10
a) List various loads that may act on steel structures. Describe the environmental load
brie?y.
b) Distinguish between the working stress methods, ultimate strength design and limit state
design.
Attempt any one part of the following: 10 X 1 = 10
a) A tie member consisting of an ISA 80mm X $0mmX8 mm (Fe 410 grade steel) is
welded to a 12 mm thick gusset plate at siteQea? f?welds to transmit load equal to the
design strength of the member. ?
14}
b) Two plates 1031:1m and 18- -mm thick are to be joined by a double cover butt joint
.Assuming cover plates of 8? ?mm thickness. Design the joint the joint to transmit a
factored load of 500 kN. Assume Fe415 plate and 31-ng 4. 6 bolt
_ yr;
V
Attempt any one part of the following: $ 10 X 1= 10
a) Determine the minimum net area of crass: Section of 300 X 12 mm as shown 1n ?gure
below .The holes are of diameter 1152111111
Pitch (p) =40 mm Ggugey (g) =60 mm
wma- MW
mmm
MAN?SH KUMAR JHA I 14~Dec?2018 13:41:48 1 117.55.24.11 31
b) Determine the block shear strength of the welded tension member shown below .grade of
steel is Fe 410.
.( ........ ?3 mm
,. ,? ......................... ?' thagxr m"
Tensimn, : '1:
Qt-ane I, ? W...
................................................................... >11 Shear pkane
Attempt any one part of the following: ' 10 X l = 10
3) Calculate the design compressive load for a column made up ofISHB 350@7IO.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. A
b) Design a slab base for a column ISHB 350 @ 710.2 N/m subjected to a factored axial load of
l500 kN.The column end and base is machined and grade ofconcrete used is M-20.
Attempt any one part of the following: . g 10 X l = 10
a) A simply supported steel joist of 4 0 111 effective span is laterally supported throughout .it carries
a total uniformly distributed load of 40 kN (inclusive Self-weight) de51gn an appropriate section
using steel of grade Fe 410. a 7'3 . ' ,
b) Determine the plastic moment capacity and plastic modulus of section of the unsymmetric sewan
shown below
TFw=l00mm, TFt=10mm. BFw=200mm, BFt=10mm, Wh=180mm, :Wt=10mm All dimensions are in mm.
MAN?gH KHMAQ JHA I 14-nnr-?)?1? 12-41 ~AR I 117 RR 74?) 111
This post was last modified on 29 January 2020