A short column of external diameter D and internal diameter d is subjected to a compressive load P acting with an eccentricity ‘e’. If the stresses at one of the extreme fibre is zero then the eccentricity has to be

\(\frac{{{{\rm{D}}^2} - {{\rm{d}}^2}}}{{8{\rm{D}}}}\)

\(\frac{{{{\rm{D}}^2} + {{\rm{d}}^2}}}{{8{\rm{\pi D}}}}\)

\(\frac{{{{\rm{D}}^2} + {{\rm{d}}^2}}}{{8{\rm{D}}}}\)

\(\frac{{{{\rm{D}}^3} - {{\rm{d}}^3}}}{{8{{\rm{D}}^2}}}\)

A short column of external diameter D and internal diameter d is subje

1.	A short column of external diameter D and internal diameter d is subjected to a compressive load P acting with an eccentricity ‘e’. If the stresses at one of the extreme fibre is zero then the eccentricity has to be
A.	\(\frac{{{{\rm{D}}^2} + {{\rm{d}}^2}}}{{8{\rm{\pi D}}}}\)
B.	\(\frac{{{{\rm{D}}^2} + {{\rm{d}}^2}}}{{8{\rm{D}}}}\)
C.	\(\frac{{{{\rm{D}}^2} - {{\rm{d}}^2}}}{{8{\rm{D}}}}\)
D.	\(\frac{{{{\rm{D}}^3} - {{\rm{d}}^3}}}{{8{{\rm{D}}^2}}}\)
Answer» C. \(\frac{{{{\rm{D}}^2} - {{\rm{d}}^2}}}{{8{\rm{D}}}}\)

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A short column of external diameter D and internal diameter d is subjected to a compressive load P acting with an eccentricity ‘e’. If the stresses at one of the extreme fibre is zero then the eccentricity has to be

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