Tunnels submerged into, or built in, open water (construction or placing of caissons in general E02D23/00; joining caissons to each other under water, in general E02D25/00)

Full Title

underground or underwater structures (underground tanks B65D88/76; hydraulic engineering, e.g. sealings or joints, E02B; underground garages E04H6/00; underground air-raid shelters E04H9/12; burial vaults E04H13/00); Retaining walls > Tunnels submerged into, or built in, open water (construction or placing of caissons in general E02D23/00; joining caissons to each other under water, in general E02D25/00)

Child Classifications

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• E02D 29/067 Floating tunnels; Submerged bridge-like tunnels, i.e. tunnels supported by piers or the like above the water-bed (pontoons or floating bridges E01D15/14)
• E02D 29/07 Tunnels or shuttering therefor preconstructed as a whole or continuously made, and moved into place on the water-bed, e.g. into a preformed trench
• E02D 29/073 Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench (caisson-type sections lowered onto the water-bed E02D29/077)
• E02D 29/077 Tunnels at least partially built beneath the water-bed characterised by being made by methods involving disturbance thereof all along the location line, e.g. by cut-and-cover or caisson methods