Tests carried out on building site in England where concrete building units were fixed with aid of helicopter showed that method is feasible but many precautions must be taken; cost may be prohibitive in some cases.
Helicopters used as cranes on building sites
Handling, Conveying, Automation -- Int (English Ed Foerdern u Heben)
1961
2 pages
Aufsatz (Zeitschrift)
Englisch
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Helicopters and aeroplane-helicopters
Engineering Index Backfile | 1921
|Emerald Group Publishing | 1994
Online Contents | 2007
Engineering Index Backfile | 1922
|Engineering Index Backfile | 1953