A temporary, multi-purpose structure tied to a high-rise building during construction, common towers enable all hoisting facilities to be arranged around and tied to it
When using common tower systems, only the common tower itself is tied into the main structure, providing a common access area for all trades and goods, whilst reducing the need to leave openings for access elsewhere on the building façade. Hoists can then be attached to all three of the open sides of the tower and many common towers also incorporate an escape staircase.
With minimum interference to the programme of works, common towers allow for the transport of materials and personnel to optimum working heights and can be used for structures as high as 300m.