A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Railway tunnel with doors
Tunnel at Brockville, Ont, claimed to be only one in world with doors; they are of stout wooden construction, at both ends of tunnel, and opened and closed twice dairly during severe winter weather; dual purpose served, protection of fabric and prevention of road bed from heaving.
Railway tunnel with doors
Tunnel at Brockville, Ont, claimed to be only one in world with doors; they are of stout wooden construction, at both ends of tunnel, and opened and closed twice dairly during severe winter weather; dual purpose served, protection of fabric and prevention of road bed from heaving.
Railway tunnel with doors
Engineer
Engineer ; 161
1936
Article (Journal)
English
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