[Towertalk] Hit water digging hole - advice?

[David]

.....I would put some plywood in there if I could, but the rebar cage is set
and there's no way now.   I'm not worried about pouring concrete into the
hole with water in there, I know that it will be displaced.  I only wondered
if continually pumping it out between now and Monday would lessen the odds
of cave in.   Back in Kentucky (where I'm originally from) this would be no
problem in that clay, but here in Florida with the sandy soil it wouldn't
take much to soften it at the bottom and cause a cave in.


----- Original Message -----
From: <ac7nj@bentonrea.com>
To: "'David'" <k4zzr@bellsouth.net>
Sent: Sunday, July 07, 2002 9:34 AM
Subject: RE: [Towertalk] Hit water digging hole - advice?


> David,
> In construction we keep pumping the hole dry till the concrete truck
> arrives I don't know the theory for why or why not but that is the
> common practice
>
> Randy
> AC7NJ
>
> -----Original Message-----
> From: towertalk-admin@contesting.com
> [mailto:towertalk-admin@contesting.com] On Behalf Of David
> Sent: Sunday, July 07, 2002 6:03 AM
> To: towertalk@contesting.com
> Subject: [Towertalk] Hit water digging hole - advice?
>
> We dug the 5'x5'x6'  hole for the tower Saturday and have the concrete
> truck
> coming Monday morning.  QTH is south Florida, soil is a dark loamy
> consistency with plenty of sand content.  The sides seem to be holding
> up
> and the moment .  We didn't notice that we had hit the water table until
> we
> were almost 6' down because it was just a trickle.  I checked the hole
> this
> morning and I've got a full foot of water in the bottom now.   I'm
> worried
> the sides might start caving in between now and tomorrow.   I figured I
> would pump out the water when the concrete truck gets here, but now I
> wonder
> if I should try to keep pumping it out between now and Monday or just
> wait.
> One thought is that if I pump out the water now, the spot water the
> water is
> coming in might eat away at the sandy soil even more as it refills the
> hole,
> the other thought is that I should pump it out now so it doesn't soften
> the
> four sides and cause them to fall in.   Obviously, any QUICK thoughts or
> suggestions would be most welcome.
>
> 73,
> David, K4ZZR
>
>
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