A truss assembly for use in building construction, comprising a first truss and one or more second trusses attached to the first truss to extend transversely to a face of the first truss upon erection of the truss assembly, wherein the or each second truss is hingedly connected to the first truss for swinging movement about a substantially vertical axis between a folded configuration in which the second truss lies adjacent the face of the first truss and an erected configuration in which the second truss extends transversely to said face.

A shed roofing structure includes: a corner rafter in which a top surface and a bottom surface form a mountain profile having a width-direction center as the vertex, the corner rafter exhibiting a fletched profile as seen in cross-section; a valley rafter formed by vertically inverting the corner rafter; a plurality of common rafters which are disposed horizontally spaced apart at a flat section of the inclined roof and inclined along a roof gradient; and a receiving plate member that is placed on respective top surfaces of an elongate transverse rafter which intersects the plurality of common rafters and supports at least the plurality of common rafters and the valley rafter from below, and a vertical member which supports the corner rafter from below, and that receives the corner rafter, the valley rafter, and the common rafters.