CH558451ACH1760272ACH1760272ACH558451ACH 558451 ACH558451 ACH 558451ACH 1760272 ACH1760272 ACH 1760272ACH 1760272 ACH1760272 ACH 1760272ACH 558451 ACH558451 ACH 558451A
Authority
CH
Switzerland
Application number
CH1760272A
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19712161392external-prioritypatent/DE2161392C2/de
Application filedfiledCritical
Publication of CH558451ApublicationCriticalpatent/CH558451A/xx
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
E02D29/05—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 at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench