Lewis Dovetail Metal Deck concrete composite acoustic floor installed over timber joists. The floor build-up has a number of variables for achieving different acoustic results.

The Fire 3 detail includes the build-up to achieve 90 minutes of fire resistance within exposed beam timber floors. These are often existing timber floors within a renovation or conversion to apartments where the existing wooden floorboards are retained. Floorboards are often retained to maintain the look of the ceiling where they are required to be retained under listed building status or for a more period look.

This floor detail includes floor boards are above the joists with the Lewis mineral wool resilient strips placed above, then the Lewis Deck and a total depth of 50 mm of concrete or screed installed on the top.

Under floor heating pipes can be installed within the concrete layer. This floor detail has large timber beams that have a predictable char rate within a fire situation.

Platform	Compatible	Version	Certified to
Revit	2017 +	1	1.3