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Question
A column of size 450 mm × 600 mm has unsupported length of 3.0 m and is braced against side sway in both directions. According to IS : 456-2000, the minimum eccentricities (in mm) with respect to major and minor principal axis are
A.
20.0 and 20.0
B.
26.0 and 21.0
C.
26.0 and 20.0
D.
21.0 and 15.0
Answer ( Option B)

26.0 and 21.0

Solution

The eccentricities of major axis
The eccentricities of minor axis (e) = (3000/500) + (450/30) 
e = 21mm

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