Hollow bricks, in particular chimney and ventilation blocks

摘要

The report tackles the issue of the construction of deserts, in particular chimneys and ventilation, produced individually and together in different configurations. The declaration is characterised by a void having a body (1) and a chamber (2) having a vertical outer wall (3) of a body (1) a round belt (5). At least one chamber wall (2) also has a round belt (7). In addition, the body (1) has additional, round, vertical strips on the vertical walls (3).