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Cobra Synthetic Cabling Merits?


jomoco
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Thanks for the hands on feedback Marc.

 

But cobra does sell static synthetic systems specifically to hold a split co dominant fault together.

Failure due to fire may not matter to folks in cold climes, I agree. But does cobra have a disclaimer for use in higher fire risk environs?

 

Jomoco

 

I dunno . Do they ?

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I think it'd be interesting to conduct a simple poll on the question of whether firefighters would prefer inflammable, or flammable support systems holding together the trees they work under?

 

Or forestry workers in general asked the same question?

 

Think they'd opt for the frail flammable stuff in appreciable numbers?

 

Jomoco

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Then let's discuss how much tensile pressure over how many square inches of cambial tissue, causes a foreign object to be engulfed rather than pushed outward?

 

Will a two inch wide synthetic strap thrown over a six inch lateral supporting a 50 lb weight vertically, be pushed up, or engulfed over a ten year period?

 

Jomoco

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The argument about steel cabling being invasive is overstated. Crown reducing a mature tree is far more 'invasive' than drilling a couple of small diameter bolts into large trunks/stems especially when you can almost guarantee CODIT will limit any decay (if cable is installed correctly)

 

I have put steel cable into the lower part of a structurally weak co dom stem and cobra higher up in the same stem. This means both systems do the job they were made for.

 

The fire issue in the UK is laughable.

 

 

 

.

Edited by scotspine1
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The argument about steel cabling being invasive is overstated. Crown reducing a mature tree is far more 'invasive' than drilling a couple of small diameter bolts into large trunks/stems especially when you can almost guarantee CODIT will limit any decay (if cable is installed correctly)

 

I have put steel cable into the lower part of a structurally weak co dom stem and cobra higher up in the same stem. This means both systems do the job they were made for.

 

The fire issue in the UK is laughable.

 

 

 

.

 

Good post🖒

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Does the UK have very delicate barked tree species like Alnus Rhombifolia, white alders, or Betula pendula white birch?

 

What happens when a wind gust applies enough tensile pull on the termination straps to girdle over half the circumference of the cabled limb?

 

Ever just step on an alder lateral and dislodge a section right down to the xylem layer?

 

Are there disclaimers stating not for use on fragile barked tree species?

 

While you could exert thousands of lbs of tensile pull to a traditional throughbolt steel system with no damage to either of those soft bark species.

 

Jomoco

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