Structural members of sheet material for walls, roofings, floors and the like

Claim 1

A FLOOR STRUCTURE COMPRISING A PLURALITY OF STRUCTURAL MEMBERS ASSEMBLED IN SIDE BY SIDE RELATION, EACH MEMBER BEING CONSTITUTED OF SHEET MATERIAL AND COMPRISING A CENTRAL BODY PORTION HAVING OPPOSITE SIDES AND A FLANGE PORTION AT EACH OF THE SIDES OF SAID CENTRAL BODY PORTION, SAID FLANGE PORTIONS EACH COMPRISING AN UPSTANDING LEG ON THE CENTRAL BODY PORTION AND A TERMINAL MOLDING PORTION, SAID MOLDING PORTION INCLUDING A FIRST LATERAL BRANCH PORTION CONNECTED TO THE UPSTANDING LEG AND EXTENDING PARALLEL TO THE CENTRAL BODY PORTION, A DEPENDING BRANCH PORTION CONNECTED TO THE END OF THE FIRST BRANCH PORTION AND EXTENDING PARALLEL TO THE UPSTANDING LEG, A SECOND LATERAL BRANCH PORTION CONNECTED TO THE END OF THE DEPENDING BRANCH PORTION AND EXTENDING PARALLEL TO THE FIRST LATERAL BRANCH PORTION AT A DISTANCE CLOSER TO THE CENTRAL BODY PORTION THAN SAID FIRST LATERAL BRANCH PORTIN WHEREBY SAID LATERAL BRANCH PORTIONS AND SAID DEPENDING BRANCH PORTION DEFINE A STEP ARRANGEMENT, AND A SECOND DEPENDING BRANCH PORTION CONNECTED TO THE END OF THE SECOND LATERAL BRANCH PORTION AND EXTENDING PARALLEL TO THE UPSTANDING LEG SUCH THAT SAID MOLDING PORTION DEFINES WITH ITS RESPECTIVE LEG A CHANNEL WHICH OPENS DOWNWARDLY IN A DIRECTION TOWARDS THE CENTRAL BODY PORTION, SAID SECOND DEPENDING BRANCH PORTION HAVING A FREE LOWER EDGE DEFINING WITH SAID RESPECTIVE LEG AN OPENING FOR THE CHANNEL CORRESPONDING TO THE MAXIMUM WIDTH OF THE CHANNEL, EACH FLANGE PORTION AT ONE SIDE OF THE MEMBER HAVING A SHAPE COMPLEMENTARY TO THE SHAPE OF THE FLANGE PORTION AT THE OTHER SIDE OF SAID MEMBER AND FACING IN THE SAME DIRECTION WITH THE MOLDING PORTION OF EACH FLANGE EXTENDING LATERALLY FROM THE SAME SIDE OF THEIR RESPECTIVE UPSTANDING LEGS WHEREIN ONLY ONE SIDE MOLDING PORTION OVERLIES SAID CENTRAL BODY PORTION PERMIT INTERENGAGED COUPLING OF COMPLEMENTARILY SHAPED FLANGE PORTIONS OF TWO IDENTICAL MEMBERS TO FORM A BATTEN TYPE JOINT, THE LATTER FLANGE PORTIONS BEING ENGAGEABLE BY THE INSERTION OF ONE FLANGE PORTION INTO THE OTHER THROUGH THE OPENING IN THE CHANNEL THEREOF, AND A PLURALITY OF SPACED RAISED PORTIONS IN SAID CENTRAL BODY PORTION TO GENERALLY T-SHAPED DEFINING T-SHAPED CHANNELS HAVING OPENINGS AT THE UNDERSIDE OF SAID CENTRAL BODY PORTION, SAID MEMBERS BEING ASSEMBLED WITH THE FLANGE PORTIONS OF EACH MEMBER INTERENGAGED IN THE CHANNEL OF THE COMPLEMENTARY FLANGE PORTION OF THE ADJACENT MEMBER, REINFORCEMENT RODS EXTENDING ACROSS THE INTERENGAGED FLANGE PORTIONS, MEANS CONNECTING THE REINFORCEMENT RODS TO THE INTERENGAGED FLANGE PORTIONS, SAID ASSEMBLED MEMBERS DEFINING CAVITIES THEREING, AND CONCRETE IN SAID CAVITIES TO A LEVEL OVERLYING THE REINFORCEMENT RODS.