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How to calculation the wind load for lighting pole?

How to calculation the wind load for lighting pole?

How to calculation the wind load for lighting pole?

(OP)
I am designing a connection detail for a 18' high 4" square lighting pole. how to calculation wind load on the pole?
there is an equation in ASCE 7: 6-27
but the gust-effect factor from section 6.5.8 is too complicated.
does anybody know there are other equations can be used? Thanks.  

RE: How to calculation the wind load for lighting pole?

You need to take into account any fixtures that might be attached to the pole. Use the lighting pole manufacturer's EPA (Effective Projected Area) and apply the appropriate amount of wind based on the area placed at the top of the pole.
Don't design it for just what's being attached now because someone might attach more fixtures in the future.

RE: How to calculation the wind load for lighting pole?

I'm not sure if vortex shedding will be an issue with a square cross section, but I suspect it will.

BA

RE: How to calculation the wind load for lighting pole?

When the analysis is done on the 45 degree axis, vortex shedding will be a factor.   

Mike McCann
MMC Engineering
Motto:  KISS
Motivation:  Don't ask

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