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
E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Procede de fabrication d'un rail de plancher d'aeronef obtenu par un assemblage par sertissage de deux parties, rail de plancher d'aeronef ainsi obtenu
Profile, notamment metallique, destine a permettre une fixation d'un film sur une structure de serre et systeme de fixation d'un film sur une structure de serre comprenant un tel profile