DEPARTMENT
OF
CIVIL
ENGINEERING
TECHNOLOGY
STRUCTURAL
ANALYSIS
ITI

AIS3211
TEST
1
Date:
27082008
Duration:
90
Minutes
Total
marks:
50
QUESTION
1
A
builtup
structural
member
of
Grade
300
steel,
i.e.
of
yield
stress
of
300
MPa
has
the
cross
sectional
dimensions
as
shown
in
F
igure

in
the
Annexure.
a)
Calculate
the
Shape
Factor
(SF)
for
the
section
b)
Calculate
the
Plastic
Moment
(M)
for
the
section.
[15]
QUESTION
2
Figure
2
in
the
Annexure
shows
a
continuous
beam
with
varying
Plastic
Moment,
and
is
subjected
to
load
(W)
at
the
ratios
as
shown
in
the
Figure,
using
VIRTUAL
WORK
(Kinematic
method).
A
.
A
p

a)
Determine
which
span,
&5
or
BC,
will
collapse
first,
and
calculate
the
magnitude
of
the
collapse
load
(W,)
at
collapse.
b)
Calculate
the
reactions
at
the
supports
and
draw
the
Shear
Force
and
Bending
Moment
Diagrams
for the
beam
at
collapse
on
the
graph
paper
provided.
I13]