Benjo75
Treehouser
Hey all. I've been watching what vids I can find on span rigging. Nothing that really explains it very much though. I sure could have used it yesterday if I had been more prepared. We showed up as the job and the only rigging point had blown out and was laying on the house. I'm glad it did since it surely would have broken out as soon as I started rigging off of it. A bunch of fence row Hackberries. Four about 14 inch dbh and 65 ft tall and one about 36 inch dbh and 80 ft tall. Everything was hanging over the neighbors yard which we couldn't use. If I had had a 300 ft rope and confident in span rigging I could have used 2 other trees and rigged them back on our side. I think.
I get the basic concept. Terminate one end to the tree you're in, go through a block on the other tree. Down to a grcs or other way to tension it. Tie the piece on, cut it and it slides to the middle and is let down between the two points. There is a lot I'm missing though. I'm assuming a block would work better than a steel biner for sliding. Then a strap or piece of rope with a cow hitch? A rigging ring over the rigging line for sliding?
Any good vids explaining this or links that would be helpful?
I ended up going 20 ft higher than my nearest rigging point and ziplining small peices back to the safebloc then a slightly bigger piece which would release everything into a freefall. Which caused everything to drop a little over 40 ft. Worked fine cause all I had to clear was the roof and a fence. The rigging point was a small hackberry that was tall and spindly. Couldn't take more than about 150 lbs at a time. Wasn't ideal but it worked. I think span rigging would have been better.
I get the basic concept. Terminate one end to the tree you're in, go through a block on the other tree. Down to a grcs or other way to tension it. Tie the piece on, cut it and it slides to the middle and is let down between the two points. There is a lot I'm missing though. I'm assuming a block would work better than a steel biner for sliding. Then a strap or piece of rope with a cow hitch? A rigging ring over the rigging line for sliding?
Any good vids explaining this or links that would be helpful?
I ended up going 20 ft higher than my nearest rigging point and ziplining small peices back to the safebloc then a slightly bigger piece which would release everything into a freefall. Which caused everything to drop a little over 40 ft. Worked fine cause all I had to clear was the roof and a fence. The rigging point was a small hackberry that was tall and spindly. Couldn't take more than about 150 lbs at a time. Wasn't ideal but it worked. I think span rigging would have been better.