The concrete mix design must be suitable for the intended method of installation (e.g. pumpable) and finishing. Concrete with a minimum consistence class of S3 should be utilised, in accordance with BS 8500.

The mix design should be prepared in accordance with the strength class, maximum water/cement ratio and minimum cement content specified the engineer. The concrete contractors proposed mix design must be approved by the engineer prior to commencement of concrete placement works.

BS 8500-1:2006 + A1:2012: Concrete. Complementary British Standard to BS EN 206-1. Method of specifying and guidance for the specifier.

Refer to 'Concrete Society Technical Report No.75 - Composite slabs using steel decking' for more information

MCRMA/SCI Technical Paper No. 13/SCI P300 REVISED EDITION. Composite slabs and beams using steel decking: Best practice for design and construction