Hello, we are mounting a sign to the top of a 38.5 foot pole. In the windiest conditions, 1600 lbs of force can be exerted at the top of the pole. This pole is mounted in the center (4.25 feet from each side) of a 8.5 foot wide x 8.5 foot long x 2.5 foot deep concrete base. The concrete base sits on top of the soil so the top of the pole is 41 feet from ground level. The concrete base weighs 27,094 lbs and the pole and sign weigh 5,152 lbs for a total weight of 32,246 lbs. We're trying to determine whether the soil can support the total weight of the pole, base and sign and the moment loads that are imparted in windy conditions. The load bearing capacity of the soil is 1500 lbs per square foot.

Thanks kindly, Tom

1## Re: Wind Loading and Resultant Moment on Concrete Base