Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Double deck lift span challenges builders
1310 ft combination railroad-highway bridge over Portage Canal, Mich, has 263 ft double-deck lift span, and 5 smaller continuous deck spans on each side, varying in length from 85 to 115 ft; sand hogs sank 90×30×80 ft high tower-pier caissons 76 ft deep through coarse sand, fine sand, and compact gravel; erection of 200 ft towers; tow boats floated 1750 ton lift span into position; span can be lifted to three different positions; in second position, bridge is flush with elevated approaches.
Double deck lift span challenges builders
1310 ft combination railroad-highway bridge over Portage Canal, Mich, has 263 ft double-deck lift span, and 5 smaller continuous deck spans on each side, varying in length from 85 to 115 ft; sand hogs sank 90×30×80 ft high tower-pier caissons 76 ft deep through coarse sand, fine sand, and compact gravel; erection of 200 ft towers; tow boats floated 1750 ton lift span into position; span can be lifted to three different positions; in second position, bridge is flush with elevated approaches.
Double deck lift span challenges builders
Eng News -- Rec
Engineering News-Record ; 164
1960
3 pages
Aufsatz (Zeitschrift)
Englisch
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