Above: Squash blocks installed to support load from above. Right: Load from above without squash blocks or blocking panels caused this web to buckle.
The Whalen Jack system was designed by a carpenter as an alternative to traditional scaffolding
The Whalen Jack system was designed by a carpenter as an alternative to traditional scaffolding. The system attaches to the building, so level and dry ground is not required, and it does not impede those working at the base of the building. The system can be set up by one person in less time than it takes to erect section scaffolding, the company says.
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