Method for forming a prefabricated truss deck

Claim 1

A METHOF FABRICATING BUILDING SLABS COMPRISING THE STEPS OF POURING A CEMENTITIOUS MIXTURE INTO A CASTING BED SUBSTANTIALLY LONGER THAN THE DESIRED LENGTH OF A SLAB, PROVIDING A PREASSEMBLED REINFORCED TRUSS OF A LENGTH LESS THAN THE LENGTH OF THE CASTING BED AND HAVING TWO SPACED SUBSTANTIALLY PARALLEL JOISTS, IMMERSING A PORTION OF SAID TRUSS INTO A PORTION OF SAID MIXTURE WITH THE MAJOR PORTION OF THE JOISTS ABOVE AND SPACED FROM THE MIXTURE, IMMERSING A CUT-OFF BAR INTO SAID MIXTURE TO SEPARATE SAID PORTION FROM THE REMAINDER OF SAID MIXTURE, VIBRATING SAID TRUSS WHILE IT IS IMMERSED IN SAID MIXTURE, PROVIDING A SECOND PRE-ASSEMBLED REINFORCED TRUSS HAVING TWO SPACED SUBSTANTIALLY PARALLEL JOIST, IMMERSING PORTION OF SAID SECOND TRUSS INTO THE REMAINDER OF SAID MIXTURE, VIBRATING SAID TRUSS WHILE IT IS IMMERSED IN SAID MIXTURE; PERMITTING SAID MIXTURE TO SOLIDIFY INTO SLABS INTEGRAL WITH SAID TRUSSES, SEPARATING THE TRUSSES AND THEIR SOLIDIFIED SLABS FROM SAID BED AND CUTOFF BAR, AND THEN TURNING SAID SLABS AND TRUSSES OVER TO THAT THE SLABS ARE SUPPORTED BY THE TRUSSES.