How to deal with tricky poplars??

[Marc Lewis]

I think the way you done it was fine, i would be happy to climb those. Dont worry about the fear, thats what helps keep us alive.

[Ty Korrigan]

Think about bicycle tubes.

These can be the thickness of an A4 sheet in the middle section however cold drawn steel is a different proposition to soggy poplar fibres.

Ty

[sime42]

t/R ratio. In hollow tree stems, the ratio of the thickness of sound wood to the radius. A criterion helpful in evaluating tree risk developed by Mattheck & Breloer

 

safetrees.com/TrainingPDFs/RiskAssessmentMathDec2013.pdf

 

Thanks Gary

 

I found something similar but more detailed, (too much mechanics for me to completely understand!). So the essence is that as long as the thickness of the wall, (of intact sound wood), of the hollow trunk is greater than 1/3 the radius we should be OK. That's reassuring as it seems that a lot of the central wood of a trunk can rot away before the strength of the tree is too much impaired. This is obviously only theoretical so each tree is different. The rot is very rarely perfectly central in the trunk for example, so if it was over to one side you could still end up with too thin a wall thickness from a relatively small cavity.

 

In my example that started this whole thread the t/R value was about 0.75. Or maybe more like 0.5 as I remember the rot wasn't central. Either way it was fine. I was worrying too much. But as someone else said; a little fear is a healthy thing!

[Gary Prentice]

Thanks Gary

 

I found something similar but more detailed, (too much mechanics for me to completely understand!). So the essence is that as long as the thickness of the wall, (of intact sound wood), of the hollow trunk is greater than 1/3 the radius we should be OK. That's reassuring as it seems that a lot of the central wood of a trunk can rot away before the strength of the tree is too much impaired. This is obviously only theoretical so each tree is different. The rot is very rarely perfectly central in the trunk for example, so if it was over to one side you could still end up with too thin a wall thickness from a relatively small cavity.

 

In my example that started this whole thread the t/R value was about 0.75. Or maybe more like 0.5 as I remember the rot wasn't central. Either way it was fine. I was worrying too much. But as someone else said; a little fear is a healthy thing!

 

Whole-heartedly agree about fear or caution. Thin walls may be sufficient to enable climbing and cutting but adding high rigging forces may be a different thing entirely.

 

As knowledge and experience increases you'll gain confidence in climbing compromised trees and gain enough understanding to decide how to go about removing the bad ones safely.

 

There's nothing wrong with being cautious when you don't know enough to cart on, fools rush in where angels fear to tread:biggrin: Everyone who has csaid they'd climb that tree without worry has been in your position in their early days I promise you.

[cingur]

I have an interest in architecture especially cob buildings such as those in the images.