Abstract: A method of assembling a folding rack is provided which makes horizontal hollow beam members collapsible but not vertical hollow support members. The horizontal hollow beam members are pivotally connected with the support members through connectors. Each support member has vertically spaced projections on each of which connectors on the adjacent beam members are coupled one above the other and pivotally retained thereon as by caulking the head of the projection on the support member, so that the beam members are pivotable substantially 90.degree. about the projection.