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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