Composite i-beam with splice at supports

Claim 1

A BUILDING STRUCTURE COMPRISING THE COMBINATION WITH SPACED TERMINAL SUPPORTS AND AT LEAST ONE INTERMEDIATE SUPPORT, OF ALIGNED BEAMS OF LIKE STRUCTURE HAVING THEIR ENDS CONNECTED WITH EACH OTHER AND SPANNING THE SPACE BETWEEN SAID SUPPORTS, THE FIRST AND LAST SUCH BEAM EACH RESTING AT ONE END ON A TERMINAL SUPPORT AND THE CONNECTED ENDS OF EACH OF SAID ALIGNED BEAMS RESTING ON AN INTERMEDIATE SUPPORT, EACH SUCH BEAM COMPRISING A PAIR OF FABRICATED SHEET METAL CHANNELS OF LIKE LENGTH HAVING BACK WEBS AND OPPOSITELY PROJECTING FLANGES, THE CHANNELS OF EACH BEAM BEING LONGITUDINALLY OFFSET AND HAVING MEANS PERMANENTLY CONNECTING THEIR RESPECTIVE BACK WEBS IN FACE CONTACT, THE OFFSET BEING LESS THAN THE TOTAL WIDTH OF THE RESPECTIVE SUPPORTS WHEREBY IN EACH BEAM THE RESPECTIVE ENDS OF ITS OFFSET CHANNELS ARE BOTH MOUNTED ON THE SAME RESPECTIVE ONE OF THE SUPPORTS AFORESAID, THE RESPECTIVE ENDS OF PROJECTING CHANNELS OF ALIGNED BEAMS HAVING THE OFFSET CHANNELS AT SAID CONNECTED ENDS IN LAPPING RELATION AND CONNECTED WITH EACH OTHER ABOVE SAID INTERMEDIATE SUPPORT.