Cobra Synthetic Cabling Merits?

[born2trot]

There's no doubt imo cobra and it's derivatives is sold to customers who have no idea by unscrupulous bosses instilling a fear factor . That's the way it is over here anyway . The fact it can be installed quickly ( other types much quicker ) and cheaply lends itself to this situation . The fire thing aside , you may be onto something ..

[Jake Andrews]

Absolutely Mark, sheer expediency trumping craftsmanship.

 

Reflects poorly on this entire industry IMO.

 

Jomoco

 

Now that I can agree with. Steel definitely has its place and people use cobra in the wrong situations IME.

[jomoco]

A question for those of you with hands on experience installing traditional steel support systems to compensate for real, rather than imaginary flaws in the tree's structure?

 

What's the single hardest component of the system to get exactly right?

 

IME it's aligning the anchor bolts to the cable's lay exactly. Doing it by eye's dang near impossible on a consistent basis.

 

Jomoco

[Jake Andrews]

A question for those of you with hands on experience installing traditional steel support systems to compensate for real, rather than imaginary flaws in the tree's structure?

 

What's the single hardest component of the system to get exactly right?

 

IME it's aligning the anchor bolts to the cable's lay exactly. Doing it by eye's dang near impossible on a consistent basis.

 

Jomoco

 

This. I also find ring systems (spider systems) hard and time consuming to get right. Hardest is ensuring all leaders are braced equally.

[jomoco]

This. I also find ring systems (spider systems) hard and time consuming to get right. Hardest is ensuring all leaders are braced equally.

 

There's an article in this arb mag on how I developed a cabling alignment tool that takes any guesswork out of cabling alignment.

 

http://tcia.org/Digital_Magazine/PDFs/lowres/TCI_Mag_Nov09LR.pdf

 

Yes, it's time consuming, but so's a lot of other high quality arb work.

 

My cable's straighter than your cable...my cable's straighter than your's!

 

Jomoco

[jomoco]

Spent a little time this morning checkin out the the many cables of this monument fig.

 

I was pleased to see many slack cables, and lots of aerial pillars developing on almost every cabled leader.

 

I firmly believe that in another twenty years time, every cable in it will be redundant structurally, and able to be removed entirely with no ill effects on the tree's structural integrity.

[Steve Bullman]

A question for those of you with hands on experience installing traditional steel support systems to compensate for real, rather than imaginary flaws in the tree's structure?

 

What's the single hardest component of the system to get exactly right?

 

IME it's aligning the anchor bolts to the cable's lay exactly. Doing it by eye's dang near impossible on a consistent basis.

 

Jomoco

 

Same for me. Also the points you need to drill into aren't always how you want them to be, ie to get the optimum angle. You have a fair bit more leeway with cobra in that regard.

[jomoco]

Well the one thing cobra's got going for it?

 

Self aligning!

 

But until we know whether encircling terminations trigger engulfment at X amount tensile force?

 

Self alignment may not prove to be much of a saving grace, IMO.

 

Jomoco

[jomoco]

I'm providing this link to a Purdue University report on the history and science of thigmomorphogenesis, for those of you interested in how reaction wood is formed.

 

https://ag.purdue.edu/fnr/associations/IAA/Documents/BiomechanicsOfTreesTelewski.pdf

 

Cobra users should at least read Prof. Telewski's report on tree guying, since it'll likely be used against you some day in a court of law, IMO.

 

Jomoco

[David Humphries]

Interesting paper Jon, thanks for sharing.

 

 

Particularly liked the oaks on the top of the tower in Lucca.

Wouldn't see that sight in Chicago

 

 

 

 

 

 

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