Client: Canary Wharf Contractors
Service: Tower Cranes
- The client required a two-phase lifting solution: an initial service for the slipform, followed by a service for the superstructure
- Select engineers managed the development from concept to proposal
- Developed a tether solution connecting the jib of one crane to the mast of another
A two-phase lifting solution with a three-crane scheme.
A high-specification commercial development in the Canary Wharf estate near Heron Quay DLR station, the project is partially located within a reclaimed dock. It consists of a triple basement and a 28-storey superstructure. A large slip-formed core forms a significant part of the building footprint.
The client required a two-phase lifting solution: an initial service for the slip form, followed by a service for the superstructure. The client proposed a three-crane scheme with each crane situated on the structure’s core. As the cranes are designed to turn with the wind and the restricted space on site meant only two cranes would have the space to turn, this idea presented a challenge for the Select engineers. Select needed to devise a plan to restrict the crane turning at all. This solution was a tether connecting the jib of one crane to the mast of the other.
On winning the job, our engineers managed the development process from concept to proposal. The tether is estimated to have added 1,750 hours of available hook time. At an added cost of c.£25k (just 1% of the crane scheme), the efficiency benefit to site has been immense.
Hours saved due to tether solution
Saved from eliminating excessive hook time