Short Column Slenderness Ratio
Short Column Slenderness Ratio
(OP)
1. I have a slenderness ration of 23.7 and my material is steel. The appropriate range for steel is 30<Le/k<120 (Structural Steel) what do you do with the equation if the Slenderness Ration is less than 30? Do you use Euler's Formula or Johnson's formula? I can't remember.
2. Schedule 40 Pipe, steel, E=29000 ksi, I=.1947, A=.6685, L=18.1, k=.5397, N=3 Euller's or Johnson's?
2. Schedule 40 Pipe, steel, E=29000 ksi, I=.1947, A=.6685, L=18.1, k=.5397, N=3 Euller's or Johnson's?





RE: Short Column Slenderness Ratio
2 N=? ... i'd use johnson
RE: Short Column Slenderness Ratio
I'd use the Rankine-Gordon formula for intermediate struts:-
P = stress allowable* area/(l+a(I/k)^2)
where p = safe load
l = column length
I= second moment area
k= radius of gyration
a = constant= 1/7500 for mild steel
desertfox
RE: Short Column Slenderness Ratio
rb1957 - N=3. (Ground support Equipment. What do you think? Still use Johnson?
RE: Short Column Slenderness Ratio
Have a look at this link
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your welcome
desertfox
RE: Short Column Slenderness Ratio
Are you sure about the slenderness ratio of steel you quoted?
It looks to me as you might not have a strut at all but a straight forward crushing mode with such a small slenderness ratio.
desertfox
RE: Short Column Slenderness Ratio
take a look at this site and scroll to the bottom of the page it gives slenderness ratio's for steel less than 40 are not struts
http
desertfox
RE: Short Column Slenderness Ratio
Thanks again. You've been a great help.
Regards,
mklt (Mike)
RE: Short Column Slenderness Ratio
your welcome
RE: Short Column Slenderness Ratio