UKTC Archive


Subject: RE: APN1
From: Dealga O'Callaghan
Date: Dec 12 2000 06:55:31

You are right - geogrid is not adequate.
I would suggest that you look at Geoblock
which I have used many times with success.
It sounds similar to Volta Cell.

Remember, the only aspect of APN1 that is worth anything
is the fact that it establishes the principle that surfaces
can be constructed over roots without damage.  Everything else
is, as you say, theoretical - by their own admission, the AAIS
never built nor tested the construction shown in APN1.  They never
'Practised' it!!

Interesting what?


-----Original Message-----
From: []On Behalf Of
Sent: 11 December 2000 23:04
To: UK Tree Care
Subject: Re: APN1

I am in the process of using APN1 to guide us thro the specification for a
small car park under some protected trees in a protected setting.

The Geogrid refered to in APN1 seems a bit theoretical. So far research has
produced a product called a VOLTA CELL, confinement system which is supplied
in panels and can be secured by pins. I am acquiring a sample.

Does anybody have any experience of the same product or any other
alternatives or any info on the weight distrubution it will afford over the
tree roots.


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