Thanks all for your comments and suggestions. I'm going to contact an engineer
Monday. The fee will be a bargain for peace of mind.
73, Mike NF4L
On Jan 10, 2014, at 4:28 PM, Mike Reublin NF4L <nf4l@comcast.net> wrote:
> The specs for my crank up call for a hole 4x4x7.5 feet. That works out to 4.4
> yds of concrete. The smaller backhoes that I can get to the site can go to a
> depth of 6 feet. Because of the water table, I consider it an unacceptable
> risk to put a man in the hole to dig out to 7.5 feet deep.
>
> A hole 5x5x6 is 5.5 yds.
>
> Would that be a safe equivalent to hold the tower up with the same wind load?
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