Hi, I have the following question to complete and i was wondering if anyone can help..(adsbygoogle = window.adsbygoogle || []).push({});

Compare the slenderness ratio and maximum safe axial load that a universal column of section 152 x 152 x 37 can carry if it is made from grade 43 steel to BS5950; 1985 and 6.5m in height when its ends are fixed as follows:

a) both ends pin-jointed, and

b) one end direction-fixed and other end pin-jointed.

i know the effective length for both ends pin-jointed is l=L and one end direction_fixed, other pin-jointed is l=0.85L. I have to use that with the formula:

S.R = l/k where S.R is slenderness ratio, l= effective length and k = least radius of gyration.

I also have these formulae:

I=k²A where I = second moment of area, k= radius of gyration and A = cross-sectional area.

F=σA where F= safe axial load, σ= allowable stress and A=cross sectional area

I also got a table from BS5950:Part 1:1985 that shows the British Standards recommendations for allowable slendreness ratio

If anyone could help i would appreciate it greatly

thanx in advance

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# Slenderness ratio and axial load of steel question..pls help

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