Trapezoidal Metal Profile sheets with strong and reliable shear bond performance which is augmented by cross embossing located in the profile. The composite floor profile offers the ultimate in the light weight steel decking which reduced concrete usage to provide a cost effective and alternative floor solution that easy to install. The floor is constituted by a profiled sheet onto which a layer of concrete is poured. The sheet is bonded to the concrete by means of moulding on the sheet which stop the concrete from slipping horizontally and detaching vertically. When the concrete is poured and until it has reached an appropriate level of hardening (stage 7), the weights of the concrete, personnel working and equipment used in borne by the sheet alone. Once the concrete has hardened (stage 2) the sheet and the concrete form a unified bond