Skanska

Skanska

Transport for London asset D2 is a steel footbridge located near South Harrow Station.  The steel footbridge consists of steel members to the main span, missile screens, steel braces and stiffeners along with a cable frame that is attached to the west side of the footbridge.  SPG will be working alongside Skanska during engineering hours to mechanically prepare the steel substrate prior to the application of a TFL approved, moisture cure urethane, protective coating system
The track side elements of the steel footbridge contain a cable support framework running across the centre section of footbridge parapet.  All services are protected during the mechanical preparation of the substrate.

There is heavy delamination on the underside deck plates.  Route cause of the delamination could have been an incompatible overcoat or inadequate preparation of the underlying coating system.  High levels of lead were measured to be present in the retained coating system on the underside elements of the footbridge.

Localised corrosion and failure of the existing coating system is visible.  There is also crevice corrosion present on the back to back steel members.

There are high levels of graffiti present on the cross sectional members of the footbridge walkway and missile screens.

Mechanical preparation of the steel structure is underway.  Six Specialist Painting Group ICATS Technicians will be present on site until the estimated project completion date of Mid - October 2017.
 

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