Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2016-2017 NCE 701 Design Of Stell Structures Question Paper
(Following Paper ID and Roll No. to be ?lled in your
Paper II) : 2012209 Roll No.
Answer Books)
B.TECH.
Regular Theory Examination (Odd Sem - VII), 2016-17
DESIGN OF STELL STRUCTURES
T ime : 3 Hours Max. Marks : 100
SECTION - A
1. Attempt all parts. All parts carry equal marks.
Write answer of each part in short. (10X2=20)
a) Write any four advantages of steel on a structural
material.
b) What is probabilitic basis for limit state Design
method? '
0) De?ne high tension bolts.
(1) What is the concept of shear lag?
e) Write the expression to calculate the net area of
cross section of a plate of width ?b? and thickness
?t? and having staggered holes ofpitch ?p? and gauge
6g?-
701/12/2016/10700 ? (1) [P.T.O.
NCE - 701
0 Write the defects in welded connection.
g) State the possible failure mode of an axially loaded
column.
h) What is meant by slendemess ratio of a column?
i) Write the different sections of Plate Girder.
j) De?ne laterally unsupported beam? Give an
example.
SECTION - B
N ote : Attempt any 5 questions from this section.
2.
(5X10=50)
The connection shown in ?g. uses 20mm diameter 10.98
grade bolts with threads in the shear plane to connect an
ISF 150 >< 12mm with gusset plate. Determine the strength
ofthejoint if (a) slip is not permitted (b) slip is permitted.
Block shear strength of the joint need not be considered.
.16 mm thick plate
Ismae?zimm
:14
NCE - 701
Design an angle section to carry a factored tensile load
of 200kN. Bolts of 20mm diameter are to be provided
for the connection of the member to the gusset plate.
Take fy = 250N/mm2 and fu = 410 N/mmz. The design
strength of a 20mm diameter bolt = 45.3N.
Two plates 150mm X 10mm are connected one over each
?ange of a beam ISLB 200@ 194.2N/m with 6 bolts of
16mm diameter as shown in ?g. Determine the design
tensile strength of (i) The beam I SLB 200 section
(ii) The two plates.
l50><10 Plate
%
ISLB 200
701/]2/2016/10700 (2)
701/] 2/2016/10700 (3)
NCE - 701
Two plates 240mm X 12mm are to be connected in a double
cover buttjoint with 20mm diameter 4.6 grade bolts. The
factored tensile load on the plates is 480kN. Design the
connection. The cover plates are 8mm thick. The bolts
have to be arranged in diamond pattern.
A 6m long column is made of a built - up section
consisting of an ISHB 350@661.2N/m with a cover plate
of 350mm X 20mm for each ?ange. The lower end of the
column is restrained against translation and rotation while
the upper end is pinned. Determine the design compressiVe
strength of the column. Take fy= 250 N/mmz.
Determine the design compressive strength of the column
whose section is shown in ?g. The effective length of the
column is 6m.
450mm><15mm
mm 1
ISMC 350 @ 413N/m
35!)
mm
L :::L L213
HEB m4
701/12/2016/10700 (4)
NCE - 701
A simply supported beam ofspan 6m supports a neinforced
concrete slab. The compression ?ange of the beam is
restrained due to its connection with the slab. The beam
is subjected to a dead load 25kN/m an an imposed load
of 20kN/m. Design the beam. Assume the beam is
suf?ciently stiffagainst bearing.
Design a simply supported beam of span 3 meters. The
beam is subjected to a factored bending moment of 250
kNm and a factored shear force of 120 kN. The beam is
laterally unsupported.
SECTION - C
Note: Attempt any 2 questiOns from this section.
10.
(2 *15=30)
a) Find the efficiency of a double bolted buttjoint With
double cover plates connecting two plates of 8mm
thickness with 16mm diameter 4.6 grade bolts at a
pitch of 50mm.
b) Design a single unequal angle strut 2.75m long
between intersections for a factored compressive
701/12/2016/10700 (5) [P.T.O.
11.
b)
NCE ? 70]
load 60kN. The member is to be connected at each
end to 10mm gusset plate with 20mm diameter bolts.
Take fy = 250N/mm2.
A factored load of 150kN is applied to a bracket at
an eccentricity 0f 3 50mm from the axis of a column.
This load is transmitted to the ?anges of the column
with 2 rows of 20mm diameter bolts for each bracket
plate. The rows are 120mm apart and the pitch of
bolts is 75mm. Whether the design is safe or not.
A tension member of a truss consists of a single
angle ISA 125 x 95 x 10 and is subjected to. a
factored tensile force of 450kN. Design the
connection of the member to a gusset plate using a
lug angle. Provide welded connection.
701/1212016/10700 (6)
NCE - 701
12. The following particulars refer to a trussed roof
Span of trusses = 5m
Spacing of trusses = 10m
Spacing = 1.25m
Dead load of roof sheets = 125kN/m2
Wind load = 1800N/m2 normal to roof
Design a purlin for the truss. Slope of roof = 30?.
701/ 12/2016/ 10700 (7)
This post was last modified on 29 January 2020