## what is the formula in AASHTO for the wind moment on a pole

## what is the formula in AASHTO for the wind moment on a pole

(OP)

I am designing the footing for a light pole in a part. I need to calculate the moment from the wind pressure. I found the following formula online but do not have access to the AASHTO "Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals" to check. Can someone please verify for me if this is correct:

Wind moment = (½ x circumference x wind pressure) x (pole height^2)/2

Wind moment = (½ x circumference x wind pressure) x (pole height^2)/2

## RE: what is the formula in AASHTO for the wind moment on a pole

## RE: what is the formula in AASHTO for the wind moment on a pole

If you have a general purpose FE program and model the pole as a step-wise tapered series of sections, you should be able to calculate the pressure on each segment in a spreadsheet. And I agree with bridgebuster that the formula should be based on the pole diameter and not the circumference.

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