Loading platforms

If you have looked up at a building and noticed temporary colorful balconies extending out of buildings and wondered what they are you have come to the right place and I'm going to tell you... They are loading platforms!
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.

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Here we can see the loading platforms in action, for the higher level all loading platforms can be extended, however to load into lower levels obviously the platforms above have to be retracted.
The loading platforms here are supplied by Everwilling Cranes.  To my knowledge they are the largest supplier of loading platforms in Sydney currently.

Also loading platforms are pretty heaving as they are made of steel,  this one here is 2.9 tonnes and just remember there are bigger platforms.  If you have to install a platform just make sure you have a big enough crane or you will have problems.