Provision of civils and premises works for the replacement of escalator 3 at Liverpool Street Station.
Civils works comprised of breaking out incline of the escalator to new required level using a remote controlled Brokk machine, demolition of redundant escalator equipment support plinths and making good all broken out areas to a smooth finish. New steelwork support frames for the new escalator machine and new slab to fill the concourse floor gap left by the previous escalator were also installed on both upper and lower machine chambers. Premises works in the concourse area comprised of the installation of new terrazzo tiling and skirting to the escalator landing areas.
New Vitreous Enamel panels were installed on the walls to suit the layout of the new escalator on both landing areas and repairs made to existing damaged VE panels.
The walls and floors of the upper and lower machine chambers were deep cleaned, made good and painted.
Due to a tight programme for the delivery of the new escalator truss and machine, extended engineering hours and traffic hours working was adopted with the appropriate segregation to protect the public and staff.
Tolerances for the truss installation were in the region of 5mm and an engineer was on site at all times to ensure this was met. Cleshar achieved tolerances of 2mm.
Engineering trains were used to deliver materials/plant and to remove the spoil from the concrete breaking out, approximately 100 tonne.
A remote controlled Brokk machine was used for the first time to break out concrete on an escalator incline which reduced considerably manual handling and HAV.
London Underground Ltd
Liverpool Street Station
Contract Start and Completion
July 2016 - July 2017