A clamp for perpendicularly connecting two elongated members includes first and second interchangeable half clamps. The half clamps are placed in opposing relationship and tightened around the perpendicular junction of the two elongated members. In one embodiment, the clamp is designed to connect a beam (such as an I-beam) to a ridge (such as that found on a standing seam roof). In another embodiment the clamp is designed to connect two beams together.