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David Humphries

Chalara fraxinea - Generic thread

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When I chat to  landowners  & homeowner still most seem ignorant of ash die back even though often  many of the trees on there property are dying or dead.

 

Ash is the dominant tree here as a %.

 

Find mentioning dutch elm helps them to get an idea of the impact as some remember that.

 

Maybe there should be adverts on TV pulbic information broadcasts like there used to be?

 

 

 

 

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10 hours ago, Pete Mctree said:

Do you have any further details on this guidance? And is it relatable to dealing with hazard trees in general?

i have already heard stories about rigging point failures where climbers have used rigging blocks & the resultant forces have ripped the tree apart.

When I started in Arb, we were rigging out the last of the elm trees we used natural crotch rigging as there were few other options. This simple method helped massively reduce the forces generated at the rigging point. This has to be our end goal either through friction or load sharing redirects- either way we need to rapidly and radically reassess how we approach these rigging scenarios, as It is OK having all the toys, but a deficit in knowledge & or the skills to apply it will no doubt result in fatalities rigging out these hazard trees sooner or later.

Hi Pete, unfortunately not, it's with Head Office being branded etc.

I don't believe this guidance will cover rigging in detail other than advising not to, in general, and only at Stage 1, ie very early on.

Hope you're well,

Paul

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10 hours ago, Paul Cleaver said:

I will be shortly survey trees railside mainly in the South. I expect I will be quite busy. I am expecting some areas where "clumps" (for want of a better word),  of ash trees may need felling. If this is the case I will have to determine whether immediate replanting should take place on banked areas to avoid landslip!

Sounds strange, after we felled trees, and treated stumps, on a steep chalky embankment we had to go back and pull the stumps out as they came loose several years later.

 

Remember when the railway was built there were no trees and kept that way by the deveg gangs.

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9 minutes ago, AA Teccie (Paul) said:

Hi Pete, unfortunately not, it's with Head Office being branded etc.

I don't believe this guidance will cover rigging in detail other than advising not to, in general, and only at Stage 1, ie very early on.

Hope you're well,

Paul

I think there is some scope for further guidance in that case as this is going to be a huge issue imo.

 

 

 

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4 minutes ago, Pete Mctree said:

I think there is some scope for further guidance in that case as this is going to be a huge issue imo.

 

 

 

Sorry Pete, the forthcoming Technical Guide (TTG3) is the 'rigging guide' which obviously will cover anchor point selection, strengths and weaknesses etc. albeit not specific to ADB.

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1 hour ago, markieg31 said:

 ash is pretty brittle to start with

That'll be why they made axe handles from it then 🙂

 

I felled some large affected ash last week, 60% crown dead, and there were definite signs of something strange in the basal cross section. Whether it was a secondary infection or signs of the chalara  infecting the whole sapwood band I'm unsure. The hinge was still as normal.

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57 minutes ago, openspaceman said:
12 hours ago, Paul Cleaver said:

I am expecting some areas where "clumps" (for want of a better word),  of ash trees may need felling. If this is the case I will have to determine whether immediate replanting should take place on banked areas to avoid landslip!

Sounds strange, after we felled trees, and treated stumps, on a steep chalky embankment we had to go back and pull the stumps out as they came loose several years later.

 

Remember when the railway was built there were no trees and kept that way by the deveg gangs

Strange to me too. IIRC someone mentioned about how stumps of infected trees were coppicing the following year, before that foliage got re-infected. I'd imagine the remaining roots would stabilise the bank for a number of years while nature took its course and new self-seeded saplings became established. 

 

As a sidebar Paul, when did you become qualified enough in geology/geography to determine where the angle of repose would lead to slippage? :lol:

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That'll be why they made axe handles from it then
 
I felled some large affected ash last week, 60% crown dead, and there were definite signs of something strange in the basal cross section. Whether it was a secondary infection or signs of the chalara  infecting the whole sapwood band I'm unsure. The hinge was still as normal.
Perhaps my terminology was not on point thur my man. Perhaps if i said it doesnt hold a hinge as well as some of the other brands of trees.

One things for sure when adb branches hit the floor the make hell of a mess! Need to purcahse a road sweeper, did have one by chance go up the road i was working the other day saving me some work!

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2 minutes ago, markieg31 said:

Perhaps if i said it doesnt hold a hinge as well as some of the other brands of trees.

I'd take issue with that too as one of the reasons healthy ash will barber chair is the high strength of the hinge

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52 minutes ago, Gary Prentice said:

 

 

As a sidebar Paul, when did you become qualified enough in geology/geography to determine where the angle of repose would lead to slippage? :lol:

I have BA in Geology Gary ………..Bugger all   :P :D

 

Edited by Paul Cleaver
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