>From "Marks' Standard Handbook for Mechanical Engineers" (9th Edition ...read 
>old)

"The slenderness ratio is the unsupported length divide by the least radius of 
gyration, parallel to which it can bend."  Sounds like what Scot wrote

If you are looking for equations/formulas, contact me off line and I can send 
you the pages from my book


Noreen McMahon
Smith Seckman Reid, Inc.

 
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of å... ....
Sent: Wednesday, September 10, 2008 7:22 PM
To: [email protected]
Subject: Slenderness Ratio

this is not a technical answer.
this is also a stab through cobwebs accumulated in 20+ years
  since I had statics and strengths of materials.

some fogbank lifts and urges me to say
 slenderness ratio is a nondimensional number
 (essentially length divided by diameter or width) that
 describes how readily a member will buckle in compression.

for a simplistic real-world example, consider a dry spaghetti noodle/stalk.
set it upright on a table, holding the upper end with one finger so the
stalk is vertical.  now, press down.  it bends, it buckles, it breaks.

slenderness ratio, i think, attempts to describe the physical
propensity for the member to bend and/or buckle

not a good definition...for all my memory is worth,
  slenderness ratio could be the odds of a thin bet on
  the roulette wheel....


scot deal
excelsior fire engineering
************************************
Does anyone have a good definition for slenderness ratio?
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