A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mercury vapor lamps not only can be used successfully for tunnel lighting but, where section is circular, can be installed economically; example of mercury vapor installation in Lake Way Tunnels entering Seattle on U S 10; average illumination on roadway is 4.3 ft-c obtained by single units on 40-ft centers.
Mercury vapor lamps not only can be used successfully for tunnel lighting but, where section is circular, can be installed economically; example of mercury vapor installation in Lake Way Tunnels entering Seattle on U S 10; average illumination on roadway is 4.3 ft-c obtained by single units on 40-ft centers.
Mercury vapor for tunnel lighting
Illum Eng
Felzer, C.A. (author)
1952
Article (Journal)
English
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