Thanks I was getting to the same figures.. the windmill units have attachments to 2.5" in pipe but the rest of the structures I have are split into thirds 6in 4 in and then 3 or 2.5in.... the bases listed on units without guide wires are 10 x 10 by 1 ft which would be roughly 4 yards of...
I am constructing 12 bases for small windmills that power pumps and aeration equipment for an aquaculture facility in Hawaii. The windmill units weigh approximately 50lbs and the zoning on the property dictates no structures over 25ft. I have an avg. windspeed of 12mph and often gusts of 50mph...
