[TowerTalk] FW: More crank-up questions

[Ken]

It is interesting how base requirements have changed over the years.  Back in 1970, I had a 64' freestanding aluminum tower (Heights) with a tribander on it and other antennas.  All the manufacturer specified for a base was 4'x4'x4' concrete and I don't think they said much, if anything, about rebar.  I had that tower up at two different locations, I'm pretty sure the bases are still there ;-)

Ken WA8JXM

On Dec 1, 2013, at 1:44 AM, Matt wrote:

> The design
> notes allow for soil conditions of  333 psi wich they defined as "sand well
> graded".  Regarding foundation dimensions I guess it depends on which school
> one subscribes to.   Conservative is to size for no tip-over without taking
> any credit for any contribution of soil bearing strength.   If one has some
> compressive soil numbers, then the foundation size can be reduced to take
> credit for the coil's contribution.