HBV floors are a composite building material made of glulam and concrete. The composite effect of the two materials is realised with the help of pin-shaped, glued or form-fit connecting means. In the composite cross-section, the timber cross-section provides the load-bearing function in the tension zone and the concrete provides it in the compression zone. The timber cross-section can be used in the form of a glulam cross-section or as a board stacking element. Due to the composite effect, larger spans can be achieved compared to conventional timber ceiling constructions and the dead weight can be reduced compared to pure concrete constructions. Particularly in areas of increased requirements for serviceability and fire protection, high-performance timber ceiling constructions can thus be realised.