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

by beegcheef
Tags: axial, load, questionpls, ratio, slenderness, steel
 P: 6 Hi, I have the following question to complete and i was wondering if anyone can help.. 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
P: 5,095
 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
It's obvious that you want to compare the buckling loads of a column to a standard...

 and 6.5m in height when its ends are fixed as follows
...but what does the rest of the question mean? Can you write the question dowwn exactly as it is written?
 P: 6 Hi Fred, thanks for replying to my post. however, that is exactly how the question is written word for word. 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. thanx