Abstract: A joint for joining structural members extending in at least two intersecting planes comprises a pair of outer spaced-apart annular plate members parallel to one of the intersecting planes and sandwiching structural members in that plane, a pair of spaced-apart inner plate members located within the outer plate members and parallel to another of the intersecting planes for sandwiching structural members in the another plane and attachment means for attaching the inner plate members and the outer plate members. The invention also extends to a structure incorporating the joint and modified forms of the joint are disclosed for use on the sides and corners of such a structure.