I have found a rather nice inclinometer app on the iphone for this purpose. I
use a baton of wood to even out the angles of trunk surface and lay the phone
against this for an accurate reading. A chap was worrying that his tree might
be increasing in lean the other day, so with no other visible signs of root
plate movement I advised him to employ this method and get back in touch if
he found and changes to the readings. It provides a reading to a point of a
degree so quite precise.
Alastair Durkin
Senior Tree Officer
Planning Policy & Trees
Tandridge District Council
The Council Offices
Station Road East
Oxted, Surrey
RH8 0BT
Tel: 01883 732863
Fax: 01883 722015
adurkin@xxxxxxxxxx.gov.uk
www.tandridge.gov.uk
-----Original Message-----
From: luke steer [mailto:luketreescapes@xxxxxxxxxxx.com]
Sent: 10 February 2012 15:53
To: UK Tree Care
Subject: RE: Leaning Tree
There is an illustration in Lonsdale 1999 showing how to use two plumb lines
to monitor the angle of leaning trees. A great way to show to owners that a
tree isn't progressively leaning more and more over time. It also provides
evidence that can be presented to an LPA to show when a protected tree is
increasingly leaning.
Best wishes
Luke
Hello all,
I have just surveyed the tree in the photos 20m high D.B.H 890, lean about
30 degrees north, stem then curves. The majority of the limbs are on the
other side to the lean. There are two reasonably sized buttress roots to the
south and west. The root plate is covered in dense Ivy client is going to
remove it all so I have a look.
There are no obvious signs of banana cracks above or below on the stem.
The tree has grown this way in response to light source as far as I can tell.
The tree has obviously formed compression wood. It is surround on three sides
by self seed Sycamores, some of which are to be removed.
Foliage appears healthy no necrotic or chlorotic tissue. Good extension
growth. Targets are a grave at the base and several others within root plate,
a footpath and adjacent yard mostly used for parking of machinery.
Has any one had experience of trees this size with significant lean in public
access spaces? The targets cannot be moved. Given the tree (pending
inspection of the root plate) appears healthy, vigorous and has withstood
recent heavy storms I am loathe to recommend removal, does anyone have
suggestions other than annual inspection or removal.
It just isn't going to respond well to a massive reduction!
Would it be prudent to undertake detailed root excavation to determine their
condition? Any thoughts welcome.
.......
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