UKTC Archive

Re: Gabion wall within RPA

Subject: Re: Gabion wall within RPA
From: Wayne Tyson
Date: Jul 24 2020 05:07:08
Redundantly, perhaps, *context is everything. *Once one knows the
objective. Gabion manufacturers might be a good source of information.

Wayne

PS: I have used angular stones laid up dry (no mortar, they must maintain
porosity) with a significant batter where some people would insist on
gabion.

On Thu, Jul 23, 2020 at 8:23 AM Ben Rose <benrose@xxxx.co.uk> wrote:

Dear all,

I had an interesting conversation about this with an engineer. You can
convert loading per square metre into kPa quite easily (there are lots of
converters online if you want to try).

If the gabion is 1.7 metric tonnes (1700kgs) per m3 that converts to
16.7kPa per metre height of gabion. That ground pressure is between the
pressure exerted by a quad bike (14kPa) and a standing human (55kPa). So,
when considering static loading, I don't think that building stone-filled
gabions would cause serious ground compaction.

Ben


Sent: Thursday, July 23, 2020 at 12:29 PM
From: "Jon Kiely" <jk-tc@xxxxxxxx.com>
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info>
Subject: Re: Gabion wall within RPA

Lady-boy mud wrestling aside, isn’t the load spreading idea with
cellular confinement systems based on passing point loads e.g. stilettos,
rather than static loads already spread in a wire basket?
The CCS solution isn’t a one-stop-shop. The details are key, as
suggested by others:
soil type
ground conditions
water table
root distribution
foundations
size of gabion

The baskets are generally about 0.5m wide and 1-2m long.
In any case the fill is typically about 1400-1700kgs per m3 depending on
material used.


Jon K



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The UKTC forum is supported by Bosky Trees arboricultural consultancy and
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