GRCS and Poor Lead

What if theres a flagstone patio under the limb?

Bombing the patio won't work, unless you bring in tires & plywood.

"When in doubt, piece it out."

I think a spider would help in moving the rigging point closer to the tree and still balancing the limb a bit. And a butt line.
 
We will use a set up that includes a biner and a sling and then a long spider leg. Girth the sling and biner to what will be the stub of the branch to be cut. Girth the spliced eye of the spider leg to the eventual butt of the limb (that is tip tied), that is to be removed. Tye a munter with the working end of the spider leg to the biner. Set up the hing and as the piece comes up, pause, stow the saw, reposition to a safe position, and grab the spider leg. As the ground man cranks up the tip, the climber is there to control the butt and even any drop that would occur is the hinge were to fail completely at an inopportune time. We use a 30 ft 11 mil ultratech spidey. Tenex would work well but would abrade faster.
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If a line drop isn't possible, I'd tie the main lowering line just beyond the balance point of the limb. Set the butt line tight and close to the hinge. The big issue is side to side movement and maintaining the hinge through the lift.

If the hinge lets go early then the butt line can be released slowly as the main line is drawn in until the limb is vertical. A spider leg can be used to balance the branching and mitigate the side vectors.

I'd look for a way to control the side movement with lines running out to limbs on either side.

Nice theoretical situation. This is what's interesting about our work. Not that this will happen every day but that it is quite possible to encounter such a challenge. If we've thought about it then we're likely better able to estimate the job and perform it confidently.
 
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Nice theoretical situation. This is what's interesting about our work. Not that this will happen every day but that it is quite possible to encounter such a challenge. If we've thought about it then we're likely better able to estimate the job and perform it confidently.

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That was one of the reasons that I posted this type of question. I like to think of different problems that might arise before encountering them.

I appreciate everyone's input too. Some very good information that everyone can use.
 
Thanks Jer.

The GRCS has made work a lot easier and interesting. You start to think about your rigging jobs more closely when you have one, or if you have the Hobbs 2 LD.

I will try to get some pics of training with the GRCS and purposely setting up a poor lead and practicing with it in non-critical situations.
 
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