ABSTRACT
The floors are of ordinary beam-and-slab construction; that is, they comprise slabs spanning in one direction continuously over several spans, between secondary beams that are themselves supported on columns, or on main beams which transmit the loads to the columns. In clauses 3.12.9 and 3.12.10, BS8110 gives rules for curtailing and anchoring bars in one-way slabs. For slabs that support mainly uniformly distributed loads and where, in the case of a continuous system, the spans are approximately equal and the system is analysed for the single loading condition of maximum load on all spans, simplified rules described in clause 3.12.10.3 of the Code can be employed. The thickness of the slab is determined by calculating the minimum effective depth required to resist the greatest ultimate bending moment. An economical method of reinforcing solid continuous slabs is for the bars near the bottom at midspan to be bent up at the points of contraflexure.
