Cantidecks are platforms that are used to get tools and materials in and out of certain levels of buildings being built.
The lift gets landed onto the Cantideck, which sticks out the side of a building. Then it gets taken inside the building, and vice versa.
These come in various sizes, so the Working Load Limit (WLL) will also vary.
Cantidecks often get transferred to different levels or locations of the buildings, depending on where they’re needed most at that given time. A crane will lift them from their brackets and take them to get reinstalled where needed.
Here’s a video showing a Cantideck being struck to be taken away.