Double deck 6-lane concrete viaduct and vehicular subway speeds Seattle's commuter traffic through business district; total length of structure is 2.43 mi; contamination of air in tunnel is monitored by controls which automatically operate fans; design provides 265 cfm of air per lin ft of subway, thereby changing air every two min. (see also Eng J v 36 n 1 Jan 1953 p 14-8, 21)
Tunnel and viaduct to ease Seattle's traffic troubles
Civ Eng (NY)
Civil Engineering (New York) ; 22 , n 12
1952
5 pages
Article (Journal)
English
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Tunnel and viaduct to ease Seattle's traffic troubles
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