Abstract: A floor formwork system is disclosed. The floor formwork system comprises a form member having a reinforcement beam attached to a surface of the form member. The reinforcement beam of the floor formwork system is positioned and attached in grooves within or on the contact surface of the form member. The reinforcement beam comprises a plurality of longitudinal rods or members, one or more of which are connected by a diagonal support member. Concrete is added to the assembled form member and reinforcement beam so as to create a floor or ceiling, or other structure. A method of assembling the form work system and use for preparation for a floor or ceiling is also disclosed.