Monolithic wall slab and method of constructing same

Claim 1

A WALL SLAB, COMPRISING A PLURALITY OF FORM MEMBERS COMPOSED OF CONCRETE MATERIAL AND HAVING A RECTANGULAR FIRST WALL AND A SECOND WALL, SAID WALLS BEING OF SUBSTANTIALLY UNIFORM HEIGHT AND HELF IN PARALLEL SPACED RELATION TO SAID FIRST WALL BY A PLURALITY OF TRANSVERSELY EXTENDING CROSSWALLS, SAID FORM MEMBERS BEING POSITIONED IN RECTILINEAR RELATION TO EACH OTHER IN ALIGNED STACKS AND COURSES WITH THE SAID FIRST AND SECOND WALLS OF EACH FORM MEMBER IN COPLANAR ABUTTING RELATION TO THE CORRESPONDING FIRST AND SECOND WALLS OF THE ADJACENT FORM MEMBERS, SAID CROSSWALLS BEING SPACED INWARDLY FROM THE ADJOINING ENDS OF SAID FORM MEMBERS SO AS TO DEFINE THEREBETWEEN VERTICAL CHANNELS EXTENDING THE HEIGHT OF THE WALL SLAB, THE ADJACENT ENDS OF SAID SECOND WALLS BEING FORMED WITH GENERALLY L-SHAPED FLANGES, THE ENDS OF SAID L-SHAPED FLANGES ABUTTING AND COOPERATING WITH THE ENDS OF THE L-SHAPED FLANGES OF AN ADJACENT FORM MEMBER, AND THE ENDS OF SAID FIRST WALL ABUTTING AND COOPERATING WITH THE ENDS OF AN ADJACENT FIRST WALL THEREBY DEFINING WITH SAID ABUTTING L-SHAPED FLANGES HOLLOW VERTICAL BUTTRESSES EXTENDING THE HEIGHT OF THE WALL SLAB ALONG EACH JOINT BETWEEN SAID ALIGNED STACKS OF FORM MEMBERS AND THE ADJACENT STACKS, SAID CROSSWALLS OF EACH FORM MEMBER TERMINATING A SPACED DISTANCE FROM AN UPPER EDGE OF THE FORM MEMBER THEREBY DEFINING HORIZONTAL CHANNELS EXTENDING