Composite girder with apparatus and method for forming the same

An individual composite girder that may be removed for use after being formed comprising:

• a steel Wide Flange beam formed from high-strength steel having a first compression flange, a second tension flange and a web interconnecting said first and second flanges;
• concrete reinforcing means surrounding said Wide Flange beam first flange and said Wide Flange beam web against said first flange;
• a concrete compression member formed from silica fume concrete on said Wide Flange beam to completely encase said first flange and to encase a portion of said web adjacent to said first flange;
• said concrete compression member encasing the top, compression flange of said Wide Flange beam and being reinforced by said reinforcing means and having a width at least twice the width of said Wide Flange beam first flange;
• said concrete compression member having an upper surface generally perpendicular to said Wide Flange beam but sloping longitudinally relative to said Wide Flange beam first flange that slopes to low points relative to said Wide Flange beam first flange located substantially one forth of the way toward the center from each end of said composite girder and is at high points relative to said Wide Flange beam first flange at substantially the center and at each end of said composite girder and side surfaces generally parallel to said Wide Flange beam web, with a relieved portion along each outer edge of said upper surface and stepped down from said upper surface a uniform distance along the entire length of said composite girder.