UKTC Archive

RE: Subsidence in a riparean area

Subject: RE: Subsidence in a riparean area
From: Jim Quaife
Date: Oct 05 2021 07:39:53
If a canal, the water would be contained.  Dug by "navigators" (navvies) the 
lining was clay mixed with straw and puddled with flocks of sheep (their feet 
having the perfect size/weight ratio - modern machines are called "sheeps' 
foot rollers")
Accordingly the canal will have no influence on local soil moisture content.
Jim 

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of Tom Thompson
Sent: 05 October 2021 05:48
To: UK Tree Care
Subject: Re: Subsidence in a riparean area

Sorry for my slow response to this one.

I wasn't a river despite being labelled as a river on the plan I had.

It was a canal cutting out a long bend in the river.

The trees were black thorn bushes, growing on top of a bund.  Previously
topped
On the adjacent land.

It was for a house purchase.

Building looked like settlement but I can't know or comment on that so just
talked about the trees.

I have had a few weird ones lately
Another site where my large clients oak was implicated.

The movement was away from the oak side of the building. This was put down
to 0revious underpinning so couldn't prove otherwise.

It just seemed that they had selected the biggest remaing tree and were
going through a process of elimination.

Regards Tom Thompson

On Thu, 9 Sep 2021, 11:47 Jerry Ross, <trees@xxxxxxxxxx.co.uk> wrote:

Check for leaking pipes?
Is the movement cyclical?


On 07/09/2021 18:16, Tom Thompson wrote:
Dear Collective

I have not been to the site yet, but the scenario seems a strange one to
me.

There is some minor damage to a property and it is on clay soil.

The trees are on the towpath with the river closer, on the other side of
the tree than the building.

Has anyone had any experience with similar sites?
Is vegetation related damage still possible.
It would just seem easier to abstract water from the river, and I would
assume that the water table is influenced by the river.

It is a fairly recent build.

Sincerely Tom

I S Thompson (known as Tom) BSc Arb MSc MArborA
Director
Arbor Cultural Ltd *Providing Expertise on Your Trees*®

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The UKTC forum is supported by Bosky Trees arboricultural consultancy and
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