Prefabricated concrete floor and ceiling construction for multistorey car park or garage

摘要

The floors (2,3) of the multistorey car park (1) are constructed from rectangular slabs of steel reinforced concrete supported at their edges by end support beams (40). The upper surfaces of the floors are flat. The under surfaces have ribs. The ribs may be rectangular in section (4), trapezium shaped, or curved in section (5). The upper floor or roof can have ribs which are