Concrete chambered slab for river bed lining - has slabs with straight and centrally bent ribs on curves

摘要

The assembly of concrete chamber slabs incorporates square chambers, with ends protruding beyond outside ribs by half chamber width, and with full-height end connecting tongues or grooves esp. for consolidating river beds. In providing curves, the assembly is made up from rectangular slabs which have straight ribs (19-21) in one group, but ribs in the other group (22-25) bent on the same side at the centre. This system enables slabs to be laid without gaps even in curved sectors.