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 Civ Eng (NY) v 22 n 12 Dec 1952 p 49-53)
Tunnel and viaduct to ease Seattle's traffic troubles
Eng J
Engineering Journal ; 36 , n 1
1953
Aufsatz (Zeitschrift)
Englisch
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Tunnel and viaduct to ease Seattle's traffic troubles
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