UKTC Archive

Re: Loss of soil strength in dry weather

Subject: Re: Loss of soil strength in dry weather
From: Bill Anderson
Date: Aug 10 2018 07:12:09
Why does soil get weaker in dry weather? Are we assuming it's just
cracking? I thought soil got weaker the wetter it got....

On 10 August 2018 at 08:00, Jonathan at Astill Treecare <
info@xxxxxxxxxxxxxxx.co.uk> wrote:

I have been monitoring lean on select trees using galvanised screws and a
digital spirit level for a few years now. Small digital levels (about the
same length as a phone)with an accuracy to 0.05 degrees can be purchased
for around £30. I initially used an app for my phone but found the 1.0
degree insufficiently accurate compounded with the buttons and round edges
on a phone which can easily distort the readings. It is important to note
that any tampering with the screws will affect the results so it should
really only be used for clients / tree owners who you trust will have the
tree’s / sites best interests in mind. I have also encouraged some of my
clients to purchase a level so they can carry out periodic or post gale
monitoring themselves. I’ve produced a guidance note for my clients
including what a 0.1 / 0.5 / 1.0 degree increase / decrease in incline
equates to on a 10/15/20 metre high tree. Will share a copy when I’m back
off my hols.

Jonathan

Jonathan Astill  Dip.Arb.(RFS) M.Arbor.A
Astill Treecare Ltd.
Brickfield Office
Maperton
Wincanton
Somerset BA9 9AW

Office: 01963 XXXXX
Mobile: 07717 XXXXXX
Email: info@xxxxxxxxxxxxxxx.co.uk
Web: www.astilltreecare.co.uk



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