I just finished erecting a Tashjian LM 354HD. Spec for the concrete base was
3.5' x 3.5' by 7' deep. I ended up with 4' x 4' x 8’. I sleep slightly better
at night. :)
On Oct 22, 2014, at 11:42 AM, Ken <wa8jxm@gmail.com> wrote:
>
> On Oct 22, 2014, at 10:39 AM, David Gallatin via TowerTalk wrote:
>
>> I have a pour scheduled for Monday. $233 for 1.5 yds direct into my hole,
>> which I go now to dig. My back hurts already. :) 73,
>
>
> Yikes, I hope you aren't digging it by hand! Better hurry up and hope you
> don't hit rock!
>
> (I have a rock layer here at 40" down.)
>
>
> As for your original question, I find it amazing how requirements have
> changed since I got my license (1963). Look around at all the towers
> standing for 30 years and I'll bet they don't have high strength concrete and
> complex rebar. They just won't last.... ;-) Seriously, I put up a 64'
> freestanding Heights tower twice in 1970 and 1975 and hand mixed the concrete
> (two days on the first one using Sackrete) and it only needed a 4x4x4 base
> back then with a TA-33 tribander and other antennas on it.
>
> I do think the lawyers have changed the engineering specs over the years.
>
> Good luck digging,
>
> Ken WA8JXM
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|