Composite steel deck was first used back in the 1920’s to provide structural reinforcement to concrete. First developed and patented by Loucks and Giller in the US, they used their steel deck to provide greater strength, a more level floor to walk on and greater fire resistance.  The first concrete slabs to be reinforced with steel deck came later, in the 1950’s. Here’s an interesting article written by the Technical Director of the Steel Deck Institute on the early development of composite steel – Click Here.

Composite steel deck is designed specifically for use with structural concrete, although variations of steel decking is also used for roofs and walkways. The steel deck is manufactured with mechanical embossments in the webs to create a strong mechanical and chemical bond between the deck and the concrete.

The bonding of these materials serves as the tensile reinforcement for positive bending in the slab.  The effect is so significant that it can reduce or even eliminate the need for rebar in the slab – this can offer cost-savings to construction companies as it means less materials.

Composite steel deck is also very easy and quick to lay, therefore further costs can be cut as there are lower labour costs. The deck can be directly laid on top of open web joists, acting as a form for the concrete.

Where is composite steel deck used?

Composite steel deck is typically used in multi-story buildings, providing concrete reinforcement to every single floor.  It can also be used alongside structural steel, light gauge framing or masonry walls, and is typically designed so that shoring is not required.

One of the main benefits of composite steel deck is that it can add strength to the building without adding weight e.g. less structure steel is required.  The type of steel deck required will be calculated by the structural engineer.

Composite steel deck comes in different profile types, gauges and lengths, each engineered for different concrete slabs and strength. If a project requires greater strength, a heavier gauge or profile type will be required.

The AMDECK™ range comes in three profiles, which suit the majority of metal deck designed structures in the UK; two trapezoidal decks, AMDECK™60 and AMDECK™80 and one re-entrant deck, AMDECK™54. Each profile is available in 0.9mm or 1.2mm gauge, all at 600mm wide, making them lightweight and easy to handle.




The AMDECK™ range of composite steel deck is particularly unique.  As well as its unique embossments, it has patented design properties that deliver exceptional structural performance. These unique properties can allow engineers to specify a thinner (lighter weight) gauge, which will not only perform as well as heavier equivalent steel deck, but will also offer material savings and therefore, cost savings.


If you would like more information on composite steel decking, or you would like to arrange to visit our factory to see sample materials and how the deck is made, please contact us on 01787 379586.