[TowerTalk] pipe anchors

[Richard]

On 10/29/2011 11:09 AM, Richard wrote:
> I live on a small city lot and am in the process of installing a 40 ft 
> Rohn 25G tower in my back yard with a pier pin base. I'd really like 
> to avoid using screw in anchors in such close quarters and would 
> prefer to use an elevated guy anchor like pipe set in cement. I 
> originally thought that 11 ft would be great to clear my roof line but 
> have been told that would require a pipe larger than what I can obtain 
> around here. Revising my plans a 4 ft high pipe in the corners of the 
> back yard would still be better than going to ground level. Can anyone 
> give me an approximate idea as to what size pipe and what size base 
> might be needed?
>
> My tower is 40 ft, I would have at most 12 lbs of wind load on it, my 
> soil is a pretty heavy clay with no sand and no rock at least down to 
> 4 ft., our wind zone is said to be 70 MPH. Any input would be greatly 
> appreciated.
>
> 73
>
> Richard / N5YPJ
Gee this is extremely enlightening -both the info on the screw in and 
the above ground anchors. I've been racking my brain looking for the 
right way to do this, I realize there is a helluva lot I didn't know.

Richard / N5YPJ