UKTC Archive

RE: Water Demand of Cotoneaster

Subject: RE: Water Demand of Cotoneaster
From: will ross
Date: Sep 05 2017 10:41:47
Bill,
       I would agree but builders are always chasing the margin and don’t 
like spending money, In most cases they design for what is there and not what 
may be occur in future years.

Will

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of Bill Anderson
Sent: 05 September 2017 11:33
To: UK Tree Care
Subject: Re: Water Demand of Cotoneaster

If I was wanting to get up the nose of my next-door-neighbour, who was trying 
to build something, then I might decide to go and plant a Euc (or a
Leyland) in my garden but as close to his project as possible. Thus NHBC 
would require him to make his foundation as deep as 4.2 dictated.

This is clearly a frivolous suggestion but It's always struck me that new 
houses don't come with exclusions from their warranty (do they?) which say 
words to the effect of you're not allowed to plant a High Water Demand tree 
within x metres of the property or the warranty's void. Oh; and neither is 
your neighbour.

To me it would seem prudent to design a foundation based on the soil type.
Nobody can foresee what sort of tree might be grown nearby nor how it might 
be managed or not managed, so assume the worst.

Bill.

On 5 September 2017 at 11:17, Oisin <oisink@xxxxxxxxxxx.com> wrote:

If it's for the purpose of NHBC you should follow the guidance therein 
- its now free!

Where the species of a tree has not been identified, high water demand 
should be assumed.

Where the species of a tree has been identified but is not listed, the 
assumptions about water demand as listed in Table 2 may be made for 
broad-leafed trees, i.e.
 - All elms, eucalyptus, hawthorn, oaks, poplars and willows = High 
water demand
 - All others = Moderate water demand

As regards tree height, you can either look-up generic information 
about the mature height of Cotoneaster, or make a tree specific assessment, 
i.e.
how big do you think it will get.

This then gets fed into the appropriate tables for soil type and they 
get their foundation depth.

Oisin Kelly BSc, MArborA, MAE
Arboricultural Consultant
M: 07570 XXXXXX
E: oisin@xxxxxxxxxxxxxxxxxxxx.co.uk

View my LinkedIn Profile

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:uktc-request@lists.
tree-care.info] On Behalf Of will ross
Sent: 05 September 2017 10:59
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: RE: Water Demand of Cotoneaster

I agree with both answers in this case the site has been cleared and 
the engineer is trying to work out the so called water demand of the 
trees/shrubs that were there to design for potential  heave, in 
reality I agree with Jim as far as rooting depth and also general 
conditions including vitality of particular specimens.
Again many thanks , any further thoughts would be welcome.

Will

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:uktc-request@lists.
tree-care.info] On Behalf Of Liam McKarry
Sent: 05 September 2017 10:46
To: UK Tree Care
Subject: RE: Water Demand of Cotoneaster

I've always thought 'Water Demand' was a silly term.

Plants remove water from the soil, anything that can root under 
foundations can therefore remove water from clay causing it to reduce 
in size meaning that foundations will move downward. Whether it's high 
demand or low demand seems a bit arbitrary.

If differential movement has occurred where the plant is and there are 
roots beneath the foundations it's a good bet that it's either the 
sole cause or a contributing factor (in combination with other 
trees/shrubs
nearby) to the clay shrinkage.



Liam McKarry
Arboricultural Officer (Planning) • Corporate and Place Services   •
Colchester Borough Council • www.colchester.gov.uk


Speaking with Planning about building works or new development? Have 
you spoken with our Building Control Service too? Our team can help 
you meet Government-set Building Regulations for the safe design and 
construction of buildings (including energy efficiency and access 
requirements). Email them on building.control@xxxxxxxxxxx.gov.uk or 
telephone 01206 XXXXXX, or look at our website 
www.colchester.gov.uk/buildingcontrol for more information.

Please note that the informal views expressed herein are not binding 
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-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:uktc-request@lists.
tree-care.info] On Behalf Of Jim Quaife
Sent: 05 September 2017 10:23
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: RE: Water Demand of Cotoneaster

Water demand is a term that is understood and in common usage, but the 
trees with the higher WD are generally those better able to root 
deeply - coincidence eh??
I doubt that there are any data so if you need to be definite it would 
have to be a trial hole to discover the rooting depth profile.
I know that pyracantha is a bad boy in subs, but usually when grown 
against the wall.  I have no idea about cotoneaster.
Jim

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:uktc-request@lists.
tree-care.info] On Behalf Of will ross
Sent: 05 September 2017 10:06
To: UK Tree Care
Subject: Water Demand of Cotoneaster

Hi,

    Does anyone have an idea of water demand for a cotoneaster, I am 
working from a third party report and the engineer is requesting 
further detail, the estimated height was 8m so I presume it was one of 
the large shrub/tree type such as waterii, also they have asked for 
the water demand of Pittosporum which I can't find. Any help would be 
welcome.



Will




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http://www.boskytrees.co.uk/




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To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy 
http://www.boskytrees.co.uk/




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To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/