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GATE Civil Engineering (CE) 2018 Shift 1 Solved Paper
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© examsnet.com
Question : 16
Total: 65
A steel column of ISHB 350 @
72.4
k
g
/
m
is subjected to a factored axial compressive load of
2000
k
N
. The load is transferred to a concrete pedestal of grade M20 through a square base plate. Consider bearing of concrete as
0.45
f
c
k
, where
f
c
k
is the characteristic strength of concrete. Using limit state method and neglecting the self weight of base plate and steel column, the length of a side of the base plate to be provided is
39
c
m
42
c
m
45
c
m
48
c
m
Validate
Solution:
Area required for base plate
=
Factored load
Bearing capacity of concrete
=
2000
×
10
3
0.45
×
20
222222.222
m
m
2
So, side of base plate
=
√
Area
=
471.4
m
m
=
47.14
c
m
Since, provided area must be more than required so answer should be
48
c
m
.
© examsnet.com
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