[TowerTalk] Self Supporting Tower Install

[Mike Ryan]

          Over the weekend I was shown some pictures of a method being used
by some locals here to plant a new 50ft self supporting tower. Not sure of
the WIDTH of the hole but I am pretty sure it was 5ft wide.  (As I recall it
was going to be 5 x 5 x 5).  What I was surprised at in particular was their
use of a section of plastic corrugated pipe (PVC) which was to line the
hole.  I guess it is designed as a cylinder of some type to hold the
concrete. I've done a few towers myself and would not ever have dreamed of
such a scheme but I was told they got their 'idea' from a ROHN catalog.
....I've never seen THIS in a ROHN catalog.  The fill in around the cylinder
would fly in the face of the otherwise 'undisturbed soil'  mandate.  They do
intend to put rebar in the cylinder and attach the bolts to anchor the base
to these. 
           Has anyone ever seen this method or done this before?  -Mike