Concrete-filled steel bearing wall

A concrete-filled steel bearing wall comprising:

• a pair of surface steel plates extending in parallel spaced relationship with respect to each other and having surfaces facing each other defining a space between said plates;
• a plurality of connecting members each having separate ends connected to said plates;
• a plurality of stud bolts welded to said plates and extending partly into said space between said plates from each facing surface, said stud bolts being arranged in relative spaced relationship at intersections of a plurality of spaced vertical parallel lines and a plurality of spaced horizontal parallel lines extending perpendicular to and intersecting said vertical parallel lines, said stud bolts on adjacent parallel lines being staggered with respect to each other so that any three stud bolts on any one pair of adjacent parallel lines are at the corner of a triangle and there is only one stud bolt at the intersections of any one of said vertical parallel lines and any pair of adjacent parallel horizontal lines;
• and
• concrete in said space between said plates embedding said connecting members and said stud bolts.