Concrete weldment

摘要

A concrete weldment has a central plate with shear force reinforcing members at both ends of the central plate. There is a pair of outstanding arms extending out from each of the ends of the shear reinforcing members. The shear reinforcing members are twisted approximately 45° so that the outstanding arms are rotated substantially 45°. This rotation preserves the vertical and horizontal shear capacity of the weldment as well as to keep the slab reinforcement means well protected with proper concrete coverage. Each of the outstanding arms has a 90 degree bend at the ends for providing increased pull out tensile capacity of the weldment.

主权项

1. A concrete weldment for embedding into a thin slab precast concrete structural member that has a length, a width, horizontal top and bottom surfaces that define a thickness of no greater than three inches, and further has an exposed edge, the weldment comprising:
a single integral steel bar having a central weldable plate having a length and a height and opposed first and second ends, a left outstanding arm having one end terminating in an end flange that extends from the one end at substantially 90°, and an opposite end twisted at substantially 45° from the central plate and 45° from the horizontal surface and integral with the first end of the central plate, a right outstanding arm having one end terminating in an end flange that extends from the one end of the right outstanding arm at substantially 90°, and an opposite end of the right outstanding arm twisted at substantially 45° from the central plate and 45° from the horizontal surface and integral with the second end of the central plate, the central plate having a front surface disposed at an angle between 50° and 75° from the outstanding arms when the arms are embedded into the concrete structural member, the front surface further disposed along the exposed edge of the concrete structural member and presenting a weldable surface from the concrete structural member.