Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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GTMTP
Original Assignee
GTMTP
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Filing date
Publication date
Application filed by GTMTPfiledCriticalGTMTP
Priority to FR7104078ApriorityCriticalpatent/FR2126476A6/fr
Application grantedgrantedCritical
Publication of FR2126476A6publicationCriticalpatent/FR2126476A6/fr
E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
E02D29/00—Independent underground or underwater structures; Retaining walls
E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them