Hollow body for concrete structure installation, has continuous taper region formed between inserting piece and tunnel, where longitudinal edges and connection edges of taper region run to inserting piece and tunnel in rounded manner

摘要

The hollow body (1) has a connecting piece (2) extending almost over the total height of a middle section of the hollow body, and an inserting piece (5) exhibiting a large cross section dimension than a tunnel (3), where the tunnel is attached to the inserting piece. A continuous taper region (11) is formed between the inserting piece and the tunnel, where longitudinal edges and connection edges of the continuous taper region run to the inserting piece and the tunnel in a rounded manner.