LRFD of Steel Monopoles
LRFD of Steel Monopoles
(OP)
I am looking for imperial local buckling limits for various multi-sided steel monopoles designed to LRFD. I have seen these for ASD in AASHTO Commentary and for LSD (Limit State Design) in the Canadian Standard CSA S37-01. The S37-01 has these limits for metric units, however these limits cannot be converted to imperial. I want to stick with imperial.






RE: LRFD of Steel Monopoles
Plastic section modulus is 4.0.R^2.t for circles, and 4.32.R^2.t for octagons, where R is mean radius for circle, and mean "inner" radius for octagon. For 10 and 12 sided figures the factor is somewhere between 4.0 and 4.32.
Hope this helps.
Russell Keays