Composite column for precast concrete structures

Claim 1

A WALL CONSTRUCTION FOR BUILDING COMPRSING: A PLURALITY OF PRECAST REINFORCED CONCRETE WALL SECTIONS; SAID SECTIONS BEING SUPPORTED ON EDGE IN AN UPRIGHT POSITION WITH THE END PORTIONS THEREBEING OVERLAPPED, SAID OVERLAPPED END PORTIONS THEREBY FORMING SPACED APART PORTIONS OF INCREASED THICKNESS ALONG THE WALL THAT SERVE AS COLUMN SUPPORTS FOR THE BUILDING WALLS AND ROOF; A PLURALITY OF SPACED APART PARALLEL REINFORCING BARS EMBEDDED IN EACH OF SAID SECTIONS; FIRST AND SECOND CONNECTOR MEANS SECURED TO SAID REINFORCING BARS WITHIN THE SAID END PORTIONS OF THE ADJOINING WALLS SECTIONS, SAID FIRST CONNECTOR MEANS INCLUDING MEANS FORMING A CAVITY WITHIN THE WALL SECTION, A RIGID RETAINING MEMBER EXTENDING TRANSVERSELY THROUGH SAID CAVITY, MEANS ON SAID RETAINING MEMBER FOR ANCHOR IT WITHIN SAID WALL SECTION BEHIND A PAIR OF SAID REINFORCING BARS; A MOVABLE LINK WITHIN SAID CAVITY, SAID LINK HAVING AN ELONGATED CENTRAL OPENING AND ADAPTED TO FIT LOOSELY AROUND SAID RETAINING MEMBER, SAID LINK BEING EXTENDABLE OUTWARDLY FROM SAID CAVITY SO THAT A PORTION OF ITS CENTRAL OPENING PROJECTS BEYOND THE SURFACE OF THE WALL SECTION, THE AMOUNT OF ITS PROJECTION BEING LIMITED BY SAID TRANSVERSE RETAINING MEMBER, MEANS PROVIDING ACCESS TO SAID CAVITY FROM THE OUTSIDE SURFACE OF SAID WALL SECTION FOR PUSHING SAID LINK TO THE EXTENDED POSITION;