A beam clamp for securing a first beam to a second beam where the first and second beams are arranged in crossing fashion and define one or more quadrants, the beam clamp including a first clamping portion having a first clamping surface configured to engage a beam flange, a second clamping portion having a second clamping surface configured to engage a beam flange and being arranged in opposing relation to the first clamping surface defining a mouth, a base portion extending between the first and second clamping surfaces and having a wedge shape for engaging a corner defined by flanges of the crossing beams, and a securing mechanism configured for extending from one of the first and second clamping surfaces, into the mouth, to engage a surface a beam flange thereby pinching the flanges of the crossing beams together.