The standard governing the requirements for this product is BS EN 15037 part 4.
Precast concrete products – Beam-and-block floor systems – Part 4: Expanded polystyrene blocks
No mechanical properties are required as the deck or screed is supported by the beams. The function of block is to provide a formwork system for pouring screed and long term thermal resistance. Blocks can made up of one or more EPS elements with different properties provide they are joined.
Mechanical properties are required as the deck or screed is supported by the EPS extending over the beams. The function of the EPS block is to provide a formwork system for pouring screed, long term thermal resistance and mechanical resistance to loads applied to the deck or screed. Blocks can made up of one or more EPS elements with different properties provide they are joined.
Clause 4.3.4 requires the material extend over the beam header to be a minimum of EPS200.
