Loading platforms are essential for bringing materials into and out of a building on a work site. Without loading platforms the only place accessible would be the top level and ground.
Loading platforms consist of a cantilevered platform the extends from the building on one half and the other half going into the building with columns that are secured to the floor and roof of the building.
Some platforms are able to be raised between levels although the majority are stationary. Some are fixed and other platforms are able to be retracted or extended to enable lifting to platforms or the ground directly below.
Platforms have a Safe Working Load that should be marked clearly on the platform, the one pictured here has a SWL of 2.5 tonnes and is currently retracted (it extends along rails until the face is at the end of the rails). It is important to know that the Safe Working Load assumes an evenly distributed load across the platform, as most loads wont be evenly distributed it is a good idea to work a bit under the SWL.
The loading platforms here are supplied by Everwilling Cranes. To my knowledge they are the largest supplier of loading platforms in Sydney currently.