2 Days Ago
We actually needed 3 devices to lift the tree off the house. We used the Hobbs H2 for the first DWT, which was mounted to a tree on the left side. Then we had the GRCS mounted on a tree to the right to control side drift and provide additional lift. The 3rd was the Portable Winch setup with a DWT directly behind the tree that was on/in the house to give us even more lift. All 3 support trees needed to be guyed back, due to the high rigging points that were needed to give me good fairleads to the contact point on the ridge of the roof. Between the rigging and my climb lines, we had nearly 1,400' of rope in the trees.
I had 3 ground workers, who were each managing one of the devices. When we started the lift, the tree would not budge. The tree was calculated from the Green Log Weight Chart to weigh around 7,500 lbs and we had approx. 10,000lbs of lift on the tree and nothing was happening. I was like "What the f*ck, why isn't this pig lifting?" All of a sudden there was a loud pop, and a section of the roof, along with the tree slowly lifted up about 2'. Evidently there were some branch stubs up high that I could not see that were caught in the attic on the roof rafters.
One of my ground workers said what do we do? I said keep cranking on the Hobbs, the tree will lift along with the roof until its high enough to slide off the tree and land back in place...or so I hoped. Well, long story short, it did just that and we were able to ease off the GRCS and Portable Winch and side-drift it clear of the roof.