Abstract: A joint assembly for joining structural members in a building frame can comprise: a marriage strap including one or more through-holes; one or more fasteners configured to be inserted through the one or more through-holes of the marriage strap; and a cube coupling joint including one or more recessed channels sized and shaped to receive a portion of the marriage strap, one or more fastener holes located within the one or more recessed channels and configured to receive and secure to the one or more fasteners. In some embodiments, the marriage strap is configured to be inserted into the one or more recessed channels of the cube coupling joint and the one or more fasteners are further configured to be inserted into and secured to the one or more fastener holes of the cube coupling joint.