Client
CVB JV
Duration
4 months
Location
Deptford London
Project Type
Design & delivery of a watertight secondary lining for the Deptford shaft
Internal Diameter
17.05m
Wall Length
54 linear meters with thickness of 650mm to 3.5mm
Shaft Height
40m
Slipform Engineering provided our client, CVB, value engineering solutions, to meet their requirements. This was achieved through close collaboration, design and construction of temporary works structures and Slipforming technologies to deliver a 17.05m diameter, 40m deep watertight secondary lining for the Deptford shaft, forming part of the Thames Tideway development project.
- Shaft consisted of 2600m3 of concrete & 550t of reinforcement.
- Shaft was constructed in 10 consecutive days & night and average of 2.4m per 12h shift.
- Secondary lining included encased in concrete steel vortex tube 3m dia & 31m high.
- Erected 2no. temporary openings 7.6m height & 4.7m in width.
- The whole rig was designed to be suspended from 13 stand jack, which were supported on a bespoke grillage structure.
- Grillage were designed to allow large pre-fabricated elements to be installed without any time loss in program.
- 1 adaption were required to complete the project.