Shaft construction system for sewers etc.

摘要

The shaft system contains individual prefab. wall sections (A,B), with their interengaging edge regions positively linked. At least in the region of one end of the wall section (A) is a circular sector-shaped recess (1), while in the region of at least one end of the adjacent wall section (B) its front edge (2) is rounded to match the recess. Pref. in the rounded front edge of the second wall section contains at least one retention bore (3) for a dowel. Typically in the end region of the first wall section is located a frusto-conical recess (5) in extension of the sector-shaped recess to the opposite outer wall (4).