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Re: Root protection area calculator

Subject: Re: Root protection area calculator
From: Julian Dunster
Date: Dec 16 2005 23:38:38
With regard to fencing type, my experience has been that chainlink is good
because it is expensive (incentive to maintain it) and not easily damaged
(relatively speaking). Plywood hoarding works well if sturdy posts are used.
Plastic snow fence is ok if it is well attached to sturdy posts and has a
top and bottom rail. Snow fence is useless when wired on to rebar (it slides
down) and not much better on a wooden framework if it is not properly
stapled. Movable steel mesh panels work well, as long as the contractor does
not shuffle them backwards every time he needs more space. On some sites I
have had a sign put on the fence that states the appraised value of the tree
and notifes the reader that the dollar amount shown is what it will cost if
he / she screws it up. If nothing else, most contractors stop long enough to
read the signs and think twice. 

jd
----- Original Message -----
From: "Scott Cullen" <dscottcul@xxxx.net> 
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info>
Sent: Friday, December 16, 2005 2:42 PM
Subject: Re: Root protection area calculator
I actually did a little spread sheet exercise and proved to myself that the
circumference is shorter. But you are right about contractors and engineers
having difficulty with non straight lines!
If we use chain link fence the standard section in 8 feet (actually the
fencing is in long rolls but the top pipe sections are 8 feet between posts.
One site recently had a huge supply of plywood in 8 foot sheets so they used
those. In both cases the sections approximate a curve. Snow fence comes in
long rolls and no top section so the radius is just a function of how many
posts you want to use.
On many sites the individual RPA (TPZ, CRZ, whatever) circles overlap so
much that a single fence protecting the joined areas may result. 

SC
----- Original Message -----
From: Chris Skellern 
 To: UK Tree Care
 Sent: Friday, December 16, 2005 5:22 PM
 Subject: Re: Root protection area calculator


 From: "Scott Cullen" <dscottcul@xxxx.net>
> My geometry is rusty. But is the circumference of a circle less that
the
> rectalinera permieter of the same area? So cost for liner amount of
fence 
 > would be less.
 > SC


 Well yes it is.

 Im wondering whether some builders can 'cope' with fencing a circle with
 straight wiremesh panels. Especially when a braced scaffold support system
 needs to be efficiently used.

 Im personally all for circles.
BS mentions the use of a square of similar area and suggests use of
Polygons 
 within the TPP.



 CS




 >  From: Chris Skellern
 >  Isn't the square size useful as its easier to fence a square than a
 > circle?
 >  CS
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