Improvised traveler derrick used in erecting the Rio Doce bridge, in State of Espirito Santo, Brazil; largest sections to be handled weighed 6 tons and were about 30 ft. long; by means of 10-ton locomotive crane, girders making up last span were converted into traveler derrick.
Derrick built of bridge members erects Brazilian bridge
Eng. News-Rec
Engineering News-Record ; 105 , n 1
1930
2 pages
3 Figs.
Article (Journal)
English
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