Drilling for a 6’ brace?

[djb6582]

We have a client who wants to save a large sycamore tree from splitting. The area that will need the most support is approximately 6’ in diameter across. The largest bit I’ve seen is 5’. Any tricks or suggestions on how to align and drill from both sides. We’ve done several brace jobs in the past, but never this extreme.

Thanks for any insight.

 

[jefflovstrom]

Is the tree already split?
Jeff

 

[djb6582]

Is the tree already split?
Jeff

It developed two main leaders early on that branch out about 5’, there is no full split yet but the trunk is showing major signs of stress. The home owner bought the house because of this large tree and is absolutely against removing either side. Our thoughts are 4 stager braces near where the leaders branch off, and add a few cables in the canopy.

 

[jefflovstrom]

It developed two main leaders early on that branch out about 5’, there is no full split yet but the trunk is showing major signs of stress. The home owner bought the house because of this large tree and is absolutely against removing either side. Our thoughts are 4 stager braces near where the leaders branch off, and add a few cables in the canopy.

Ok,,any pics? BTW,,it is really cool how those sycamores can grow, I would call a local arborist look at it. Especially if you don't post a pick.
Jeff,,

 

[djb6582]

Ok,,any pics? BTW,,it is really cool how those sycamores can grow, remember, a large tree needs a large brace. I would call a local arborist look at it. Especially if you don't post a pick.
Jeff,,

I would if I had one. The owner posted the job all I got was a diagram and work order.

Like I said we have done bracing in the past just nothing this large. Was curious as to how folks were setting the brace, i.e. drilling through diameter that size.

 

[jefflovstrom]

I would if I had one. The owner posted the job all I got was a diagram and work order.

Like I said we have done bracing in the past just nothing this large. Was curious as to how folks were setting the brace, i.e. drilling through diameter that size.

Ah, ok, well it might not need nothing. With no pics, this is ,,a lot of comma's,,,
Jeff

 

[Zale]

You might be better off reducing crown weight and installing a cable system. Trying to align two holes for the rod is very difficult. If you have to do it, I would weld an extension to the 5' bit that you have. Start the hole with a smaller bit. It's a pain in the ass working with that long a bit. Also, bring a pipe wrench with you when you get the bit stuck. Odds are better than even the bit will get stuck when its that long.

 

[TC262]

You can get extensions for your bit if the shank is smaller than the drill size. Just make sure you have good flats ground onto the shank where the set screws seat, otherwise you'll be leaving your bit in the tree.

 

[djb6582]

Was thinking of trying the extension route since we don’t have a welder in the shop, but just found this on arborsite Think we will give it a try. Will post some pics with the final product.

Thanks for the input.

Dan

“Ship augers are used for drilling holes for threaded rod for cabling purposes. When using all-thread rod order an auger 1/16" large than the size of the rod and when using woodscrew rod order an auger a size 1/16" smaller than the size of the rod. Any of the 24" ship augers can be ordered in longer lengths than those shown as we weld auger extensions in-house anywhere from 4-12 ft.

If you would like a longer auger, order the size you need in a 24" auger and then order the appropriate extension item number. For on-line orders please specify overall auger length in the Special Instructions section on the invoice page. Allow 2-3 days for extension augers.”

- See more at: http://www.arborist.com/category/1094/Ship-

 

[Zale]

One last bit of advice. Constantly clean the hole out as you drill.

 

[BC WetCoast]

We had an extension welded on a bit. Take it to a fab shop and have them make one up for you. Keep the 5' bit you have and then get a short bit and have the welder make a long extension for that. Tell him what you are doing so he can recommend the proper steel.

 

[treeseer]

zale's take on this sounds best.
I like bracing above the fork. Line up holes with laser pointer and level.

4 staggered braces near where the leaders branch off, and a few cables in the canopy, sounds like tremendous overkill and egregious wounding, just like the A300 and BMP call for.