Anchor posts specifications

[Jim Corcoran]

This is my first time at putting together a windmill tower and am in need of anchor posts to fit my 8' F&W Star 37. Can anyone provide me with the recommended dimensions so I can fabricate my own (or a good source for some already manufactured ones). The tower is 21' tall with 2" angle. I need the overall length of the anchor leg and the size of base plate (cross piece). I anticipate the dug holes to be 12" in dia. and approx 4' - 5' deep.

As always, any help is greatly appreciated.

Jim

[windybob]

Jim, we use 4 foot angle from old bent-up towers. Take 2 10 inch pieces, and weld them in an T profile. Lay the anchor leg on a anvil, and hammer the end somewhat flat. Put the flat end of the leg across the double-layer of the 'foot' and weld them. Next we take and drill a 3/8 hole thru the foot and leg , and bolt them together. Scrape, grind, and blow everything clean, and coat or dip in quality oil paint, creosote, or some rust preventive. We never drill the tops until setting a tower, then we punch holes to match.

[Ron Stauffer]

Length 5', same size angle as tower. We use 200# of fast set in a hole so we punch the anchor angle for 5/8 hole and put rebar in. Unattached rebar can accommodate anchor holes being off some so you dont have to fight with it

Ron Stauffer
Montrose CO

[Jim Corcoran]

Bob and Ron,
Thank you both for the helpful instructions. It is much appreciated.
Best regards,

Jim