Steeles West and Finch West Subway Stations
Mechanical and Electrical Engineering
Lighting Design
Toronto Transit Commission


The TTC is extending the underground subway from the existing Downsview Station on the Spadina Line to the proposed Vaughan Corporate Centre. The new 8.6 km six station line will comprise tunnel and cut and cover sections. Above ground, each new station includes a main entrance, secondary and automatic entrance, as well as electrical substation. HH Angus has been involved in two of the six stations – Steeles West and Finch West.

The projects’ communications systems include fire alarms, public address speakers, passenger intercom, public telephones and security systems including closed circuit television. The electrical engineering covers 600 volt power distribution, lighting and communications systems. Design layouts are being provided for power distribution of the stations, as well as traction power for the trains. The work comprises of a complete detailed layout of the embedded conduit design from the high voltage incoming service distribution through to the low voltage power circuit. An emergency power / uninterruptible power supply (UPS) system is being provided for the passenger station and the underground running structure.  Lighting designs are provided for exterior public areas. The mechanical engineering includes ventilation and air conditioning of services spaces, sanitary and storm drainage for washrooms and service area, track drainage, fire protection systems, as well as incorporation of system-wide tunnel ventilation.

Image courtesy Toronto Transit Commission

Steeles West and Finch West Subway Stations