Building block for installation in building wall or building floor of building, has flow molded part completely or partially embedded in building block and recess for completely or partially receiving flow molded part for guiding medium

摘要

The building block (1) has a flow molded part completely or partially embedded in the building block and a recess for completely or partially receiving a flow molded part for guiding a medium flow through the building block. The building block is formed of concrete, particularly porous concrete, polyurethane or polyurethane foam. Independent claims are also included for the following: (1) a method for manufacturing a building wall or a building floor; (2) a building with an air ventilation duct; and (3) a method for manufacturing a building block.