UKTC Archive

Re: Aims and Objectives of Tree Management

Subject: Re: Aims and Objectives of Tree Management
From: Andrew McManus
Date: Feb 28 2020 21:46:42
I have a relavent live situation.Surveying a 11kV powerline for trees that 
need cutting to achieve a 5m clearance, I came across two badly decayed larch 
trees in a mature mixed woodland beside a 11kV powerline cat B so taller than 
the conductors and with the potential to breach the vicinity zone, (and also 
hit the conductors) They have failed and are each hung up (leaning at about 
20deg to vertical) reasonably securely in adjacent beech trees but in a 
direction 45deg towards the powerline.  The decision to be decided is is it 
more dangerous (to the tree cutters) to fell the trees or is the risk to the 
network and to the very occasional visitor of leaving the larches to 
disintigrate naturally greater.  It is case specific and finely balanced.To 
fell them I do not like the idea of cutting them with a chainsaw because of 
the risk of them breaking apart and hitting me. And any pull rope to prevent 
them hitting the conductors may not work as the rotten trees break apart.One 
approved method that avoids the risk of a manual chainsaw operator being hit 
might be to winch them out, but the possibility of the tree breaking and 
falling onto the powerline means a shutdown and even lowering the conductors 
would be indicated. The high monetary costs and risks to the linesmen of 
doing this must be considered.The alternative is to leave the larches to 
disintigrate naturally and hope the main trunks do not free themselves from 
the embŕace ot the supporting beech trees in a length long enough to hit the 
powerline.  It is a private woodland where I saw no one else on my two visits 
during office hours. It is unlikely anyone would be present to be harmed by 
any falling tree or broken powerline. The risk of harm from an interuption in 
electrical supply are unknown.I can see the case for leaving the larch trees 
to disintigrate naturally. I suspect we will be asked to remove them. I recon 
the comparitive risks will be evaluated as much by emotion rather than by 
reason.Andrew
-------- Original message --------From: Tom Thompson 
<admin@xxxxxxxxxxxxxxx.co.uk> Date: 28/02/2020  13:07  (GMT+00:00) To: UK 
Tree Care <uktc@xxxxxx.tree-care.info> Subject: Re: Aims and Objectives of 
Tree Management I don't remember that but the comments about risk to 
contractors got methinking.We have a very low risk of ha or damage to 
property and we are trying toget it to close to zero.We are not considering 
the impact to health and mental health of the lossor reduction of trees and 
we are not considering the risk to thecontractors doing the work.The last 
contractor death I can remember was in Croydon.  The guy gut hisneck while up 
a tree, I believe doing a reduction rather than felling anobviously decay and 
compromised tree. There was another one in south Lomdonsomewhere I think.Just 
got me thinking are we looking at the big picture or focusing in onthe tree 
surgery straight away.Sincerely TomI S Tom Thompson (known as Tom) BSc (Hons) 
Arb, MSc eFor, MArborAPrincipal Arboricultural ConsultantArbor Cultural Ltd36 
Central Avenue, West Molesey, Surrey, KT8 2QZT   0333 XXX XXXXM  07899 
984162E   Admin@xxxxxxxxxxxxxxx.co.ukW  www.arbor-cultural.co.ukOn Thu, 27 
Feb 2020, 5:10 pm Jonathan Hazell, <go2jonathan.hazell@xxxxxx.com>wrote:> I 
remember Clive Mayhew talking about something akin to this at an AA> 
conference years ago>> Jonathan>> On Thu, 27 Feb 2020 at 17:03, Tom Thompson 
<admin@xxxxxxxxxxxxxxx.co.uk>> wrote:>> > Dear All> >> > This is prompted by 
the recent discussion on the risk of harm or damage> to> > property from 
trees against the risk of commissioning tree work and the> > inherent danger 
therein.> >> > I was not thinking of the extremes that were highlighted but 
more the> > marginal decisions and pose this question.> >> > Is our 
aim/objective (or another descriptor to suit) to;> >> > The better management 
of trees> >> > Or> >> > To create a safer, healthier environment through the 
better management of> > trees.> >> > The former in my mind/experience leads 
to more tree pruning.> > The latter more an assessment of the overall value 
of trees,> > including ecosystem services etc.> >> > Sincerely Tom> >> > I S 
Tom Thompson (known as Tom) BSc (Hons) Arb, MSc eFor, MArborA> >> > Principal 
Arboricultural Consultant> > Arbor Cultural Ltd> >> > 36 Central Avenue, West 
Molesey, Surrey, KT8 2QZ> >> > T   0333 XXX XXXX> > M  07899 XXXXXX> > E   
Admin@xxxxxxxxxxxxxxx.co.uk> > W  www.arbor-cultural.co.uk> >> >> >> > --> > 
The UK Tree Care mailing list> > To unsubscribe send 
mailto:uktc-unsubscribe@xxxxxx.tree-care.info> >> > The UKTC is supported by 
Bosky Trees arboricultural consultancy> > http://www.boskytrees.co.uk/> >>>> 
-->> Thank you,>> Jonathan Hazell> 07501 XXXXXX> jhazell.com>>>> --> The UK 
Tree Care mailing list> To unsubscribe send 
mailto:uktc-unsubscribe@xxxxxx.tree-care.info>> The UKTC is supported by 
Bosky Trees arboricultural consultancy> http://www.boskytrees.co.uk/>-- The 
UK Tree Care mailing listTo unsubscribe send 
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