Method for manufacturing of bushing for wall or base element of a building, involves providing building entrance with casing pipe in wall or base element

摘要

The method involves providing building entrance (1) with a casing pipe (2) in a wall or base element (4) and arranging a seal at the casing pipe. The seal is provided for fixing the casing pipe. A supporting pipe is attached at the casing pipe. A partitioning pipe is inserted in the casing pipe. An independent claim is also included for a bushing for the execution of a manufacturing method and for inserting a fiber optic cable in a building.