Concrete pavement slab with ducts in lower long edges

摘要

In the region of its lower, longitudinal edges the slab (5) has duct-like recesses (7) from one side wall to the other, while along its peripheral walls are located protruding spacers (13). The cross-section of the duct-like recesses is constant along the longitudinal edge. There are indentations (14), corresp. to the spacers, along the peripheral walls, into which the protruding spacers can fit. Pref. the dimensions and configuration of the spacers and indentations are matched to each other and to the slab size that adjacent slabs fit easily together.