TRANSCRIPT
Here we see one of our arborists in their natural habitat. So we’re working locally today in Caringbah. We're removing this huge tree by crane. We're using the crane access method where the climber rides the hook. So he's using the hook as his high point for his lifeline because it's unsafe to climb the tree and there's no other point of access. A lot of customers initially freak out when we say that we're going to use the crane, but it's definitely the safest way to remove some trees and it's an approved WorkCovered method that’s been used for many years. So, the chains are being set. His lifeline is still attached to the hook and he's going to climb back over to his cut point, take his lifeline off the crane and then he's going put his pole strap and lifeline around the tree before he makes the cut and the crane can take away that large piece of timber, safely without it dropping down onto the building site. So it's really important how the climber sets up the chains because we don't want to shock load the crane with unintended weight and we want to ensure that when he cuts the branch, that the crane lifts the branch away as smoothly as possible. So he's still using the hook as his highpoint. See the climbing arborist is walking back from setting the chains so he can get back to his cutting location of the tree safely. There would be no other way for the climber to get out to that point without a crane as there's no high point in this tree. Therefore it's the safest point of access and that's why WorkCover approves, specifically arborists, to ride the hook. So he’s getting in position for his cut point. He's attaching his pole strap in preparation to remove his lifeline from the hook of the crane. So now he communicates with the dogman about the expected weight of the branch. We've estimated this branch to be 500 kilos and we've currently got 400 kilos of force on the jib. So for this one, he's going to do a top scar and that's going to allow him to lift the branch up with the crane. So now he's asked the crane driver to lift up the branch. It's going to hold, hold, hold while he brings the branch up vertically, allowing some minor cuts just to make sure it lifts smoothly and the center of the hook is away from the climber. So when the branch releases, it's going to be moved away from the climber. Nice and smooth. So that is a perfect lift. There will be no shock load to the crane and the crane operator can move the branch safely away from the climber and not over the climber. The climbers love crane jobs because often they have to wait around. It's a lot easier on their body, a lot less physical and a lot safer for them.
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