Abstract: Reinforced concrete wall components have top, bottom and side margins of a V-shape, and these margins have cooperative engagement with matching horizontal and vertical frame portions to provide a laterally stable support and connection between the wall components and frame portions. Eyes anchored in the concrete are spaced along the margins of wall components for use in lifting the wall components and for interconnecting them to horizontal and vertical frame components. Connection between the horizontal and vertical frame portions and to footings also comprises anchor projections and cooperating box-like connectors which receive the projections. Various arrangements of anchor projections are provided for connecting adjoining walls of a building.