This European Standard deals with the requirements and the basic performance criteria for lightweight blocks used as formwork during the construction of the floor system. The blocks are used in conjunction with precast concrete beams in compliance with EN 15037‑1, with or without cast-in-situ concrete for the construction of beam-and-block floor systems.

This European Standard does not deal with blocks made in polystyrene, with or without tong, or combined with different materials where polystyrene contributes to more than 50 % of the mechanical resistance of the block. These blocks are covered by EN 15037‑4, Precast concrete products —  Beam-and-block floor systems — Part 4: Expanded polystyrene blocks.

Examples of typology of floor systems are given in Annex B of EN 15037‑1:2008.