Pinning and reduction of large split on a Veteran Oak - opinions please

[Con]

12 hours ago, Sviatoslav Tulin said:

To me it is safe to climb for a reductionor any other things, however why is the client deciding how to do that,it is non of her business ,how you doing it.

She said a mewp is cheating

[Peasgood]

Tell her that getting someone else to do it is cheating.

[symbiotic]

This is all so useful thank you

 

I am still undecided on MEWP yet but after reaching out to more experienced arborists, I am leaning towards climbing it on a STILL day as it has been like it for a while and survived some high winds. With the addition of one more pin with a larger washer, it will put my mind at ease.

 

Still unsure on the bracing side of things. Anything Cobra will need to be inspected annually and replaced every 7? 

 

I have never torqued cobra really tight between two stems. Would it be suggested then that I would have to pull them together up high using ratchet straps and then torque the cobra up tight down below?

 

Would you do 8t cobra between the two stems near the split and then some 4t higher up?

 

Thanks again guys, this is brilliant 

[maybelateron]

Is the cause of the split in the trunk known? The only time I have seen that in an Oak was on a very large one where we know it was caused by a single massive lighting strike that split a trunk of about 6ft diameter and tore out one of the three main stems at its origin, 21 inch diameter .

[symbiotic]

The cause is unknown, and I was mistaken when I said it had happened early summer, it was apparently November time.

 

I have been told by a consultant it could of historically been two trees on the hedge row that grew into one stem perhaps?

 

The rest of the crown seems unaffected so one would assume that lightning was not a cause?