Monolithic covering lid for subway in railway construction, has building auxiliary wall that is extended at underside over its width, and arranged more nearly at terminal end than supporting surface for counter bearing

摘要

The covering lid (2) has a building auxiliary wall (7) that is extended at the underside (8) over its width, and arranged more nearly at the terminal end (4) than the supporting surface (5) for counter bearing. The horizontal portion of the lid is led out over the auxiliary wall with respect to the terminal end. The building material is filled in space between transverse slots (21) beside the outer side (9) of auxiliary wall. An independent claim is included for arrangement of covering lid.