Surface UUMI at Kelvinhall, Glasgow Scotland, UK.
UUMI is not just underground, it also has surface interfaces, which enable the safe presence and operation of underground metro infrastructure (ventilation, lift, or escalator shafts, sub-stations, buildings). Access to metro stations can be through purpose-built buildings or through entrances provided within other forms of urban infrastructure.
Fig.1, shows an access passage to Kelvinhall Glasgow Subway station ticket office and station, through a tenement building. The station was constructed in the late 19th Century (1890s) to serve a densifying urban environment. The densification of that urban environment, saw the demolition of existing buildings and the erection of new denser buildings.