light reductions

[Adam Bourne]

Awesome keep us updated David

 

 

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[David Humphries]

Another oak limb failure to 'make safe' this time above a woodland desire line path

 

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[David Humphries]

Another oak limb failure to 'make safe' this time above a woodland desire line path

 

Nick used SRT access, transfered over to 2 climbing lines to keep his weight off the limb, moved the tails away behind him and severed the remaining fibres.

 

The limb (although severed from the fracture) was still caught up in adjacent birch. The compressed branches were severed using a pole pruner resulting in the limb rolling down onto the floor.

 

 

 

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[Dan Curtis]

Did you have any cause for concern for the integrity for the rest of the crown David? Interesting using a base anchor on a relatively small PSP in a tree known to have failed.

[David Humphries]

Did you have any cause for concern for the integrity for the rest of the crown David?

 

the oak was visually assessed from the ground prior to ascent (couple of weeks ago at the time of failure & again this morning) we were happy that the tree was free from other failures, Dan (other than old wounds unconnected with the recent failure)

 

Interesting using a base anchor on a relatively small PSP in a tree known to have failed.

 

'scuse me ignorance, PSP?

 

 

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[Dan Curtis]

the oak was visually assessed from the ground prior to ascent (couple of weeks ago at the time of failure & again this morning) we were happy that the tree was free from other failures, Dan (other than old wounds unconnected with the recent failure)

 

 

 

'scuse me ignorance, PSP?

 

 

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Thanks, I imagined it would'vebeen, just curious.

 

PSP-primary suspension point. Sometimes used as PTP - primary tie in point. All this modern SRTWP jargon

[Nick Harrison]

Thanks, I imagined it would'vebeen, just curious.

 

PSP-primary suspension point. Sometimes used as PTP - primary tie in point. All this modern SRTWP jargon

 

Hi Dan

 

just feeding into your question about the integrity of the tree from today's job, it's a good question you raise about the potential risk of entering into a tree that has had a recent substantial failure, we had a good look around the tree when it first failed (a few days ago) and again this morning when we turned up to do the work.

 

As the climber we all know how important it is to assess these situations before you put yourself into the firing line of potential risk, apart from visually inspecting the tree before ascent I also had a look as i went up the SRT line for any external signs of something amiss, . If i'd felt any worries or concerns i'd certainly have got back down and we'd have reassessed the job. Prior to deciding how to tackle the failed limb, the whole team discussed the varying options on how best to get it onto the ground without causing unnecessary risk to us and secondly not damaging the main stem of the tree whilst releasing the failed limb to the ground.

 

The risk factors of jobs like this can change dramatically whilst the work is being carried out, something i/we are very aware of, hence we don't rush these types of situations and are always communicating to one another each step of the way. We also discussed positioning of the SRT basal anchor in relation to any potential risk from the falling limb(s), once i'd ascended into the tree i switched to my DDRT and disconnected from the SRT line.

Again, it's a really good question you raise so thanks for the feedback..

[treeseer]

Nicely done; SOP to check the TIP tie-in point with a bounce and/or pull test, along with the visual with binocs and naked eye. The decision to trim frayed fibers and leave stub seems quite sensible...if there's a way to find indication of a node.bud location then all the better.

 

BTW just because one portion of the tree failed does not automatically kick the (this) climber into high alert; just a bit of extra caution. IMHO that is...if something looks sketchy then just hook up a 2nd TIP eh?

[David Humphries]

decent aged oak that is starting to naturally retrench.

 

Probable Laetiporus sulphureus colonisation suspected

 

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[David Humphries]

decent aged oak that is starting to naturally retrench.

 

Probable Laetiporus sulphureus colonisation suspected

 

I've stood back a little too long with similar cases in the past, so felt this one was in need of a little help with the retrenchment process to aleviated some of the weight in the limbs.

 

shot of Conrad & Michal doing the do........

 

followed by a series of before & afters taken fromthe main cardinals......

 

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