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Q4: Experiments were conducted to determine the safe buckling load on columns with T-section 100 mm ×...

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Civil Engineering

Q4: Experiments were conducted to determine the safebuckling load on columns with T-section
100 mm × 100 mm × 10 mm with different support conditions. Whenboth ends of the columns
are fixed, safe crippling load carried by the column was found tobe 60 × 103 N. Suggest the
length for other three columns for the same crippling load when thesupport conditions are
changed to one end fixed but the other end free, both the endshinged and one end fixed but the
other end hinged. The cross section of the column is kept constantin all cases, and E = 200 GPa.
Take factor of safety = 4.
Instead of T section, a hollow column of same material havinglength 5 m and external diameter of
55 mm when subjected to a compressive load of 60 kN, there was ashortening in the length of the
column by 0.120 cm. Suggest a suitable value for the thickness ofthe column to withstand the safe
crippling load when one end of the column is fixed and other end isfree?

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