128489 ⎘
Excavations; Bordering of excavations; Making embankments Foundation trenches ditches or narrow shafts
Sub-classes:METHOD FOR DESIGNING AND FORMING A RETAINING WALL IN THE GROUND, AND RETAINING WALL
#2Boring machine for producing a non-rectilinear trench
#3Tunnel detection method and system
#4Method of installing pipelines with minimal removal of soil