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Westgate and Greenpark Way ventilation shafts

Skanska Costain STRABAG (SCS JV) are responsible for the design and construction of the HS2 main civils works at the Westgate and he Greenpark Way sites in Ealing.

We will build a vent (or ventilation) shaft and headhouse at the Greenpark Way site.

What is a ventilation shaft and headhouse?

A ventilation shaft or vent shaft, is the vertical opening that connects the tunnels to the surface and open air. It regulates air quality and temperature in the tunnel, provides access for emergency services, and allows smoke to be extracted in the event of a fire. The headhouse is the building on top of the ventilation shaft which contains fire control systems and the ventilation systems for the railway tunnels below.