The hole for this tower is roughly 9 feet deep by 52 inches by 60 inches.
The first 4 feet down was black gumbo dirt. Then we hit a 1 feet thick layer of chalk rock 6 to 8 inches in size.
The last 4 feet was clay (which might as well have been solid rock).
Nearly 8 yards of concrete were poured. The large width and depth of the hole dictated a large rebar cage around the steel base itself.
Concrete was allowed to cure for 5 weeks before any load was placed on the foundation.
The steel base from the manufacturer had been improperly fabricated. A local welding shop had to cut apart the base, mount the individual legs of the base to the tower, then properly re-weld the base back together.
With any used tower its a good idea to replace the steel rope cables. Do NOT use the crimp sleeves that you may find at your neighborhood Blue or Orange big box store.
Use sleeves from Nicopress and use the proper crimping tool and procedures.
