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Priority claimed from DEB75200Aexternal-prioritypatent/DE1184310B/de
Priority claimed from DE1964B0057984external-prioritypatent/DE1901704U/de
Application filedfiledCritical
Publication of BE658865ApublicationCriticalpatent/BE658865A/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/14—Lining predominantly with metal
E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
Dispositif pour utiliser, lors de l'introduction d'elements de traction individuels, une barre de traction a portee libre dans une gaine tubulaire
Procede permettant d'incorporer des epingles de levage et de manutention dans des dalles alveolees en beton precontraint ainsi que dalle obtenue suite a la mise en oeuvre de ce procede