Specificity of precast floor design, on the example of the hollow-core slabs : Specyfika projektowania stropów prefabrykowanych na przykładzie płyt kanałowych

Precast floors are gaining more and more popularity in modern construction, mainly due to their fast realization. However, the provisions of standards regarding floor design are often ambiguous and sometimes questionable. The article discusses selected issues of HC slabs design, which often pose problems in practice, with references to relevant scientific research in this field. Particular attention was paid to the principles of distribution of the concentrated load on adjacent slabs in the floor field, openings in the floors, support conditions and taking into account the slabfunction as an element of a floor