1.3M
STMAKING OF // KF Aerospace Spiral Stair
Challenged by the tight space that was available on site in Kelowna, the stair was installed with different approaches for each of the CLT halves.
The installation of the lower half was constrained by the 2nd floor above the final location, which did not allow a crane or telehandler to lift the 1-ton panel. Instead a rigging system was designed to be attached onto the existing beam structure and then connected to the CLT via adjustable chain hoists that would be reeled in manually. This lifted the CLT off the transportation jig and into its final position.
When the second half was finally lifted into place with a telehandler, the accurate work of our carpenters in the shop and on site paid off as all three connections at the bottom, middle, and top lined up perfectly. The panels were fastened securely with fully-threaded screws and perforated steel plates to connect both halves. Afterwards, the preparation work for the Timber-Concrete-Composite system began, which included placement of formwork, rebar and additional fasteners that tied concrete and timber together once concrete was poured.
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