Abstract: The invention provides an eave truss for anchoring, supporting and reinforcing a metal roof and "tilt-up" or other prefabricated concrete or masonry walls in a building against the vertical load exerted by the roof itself, the lateral load exerted by wind and seismic forces, and load caused by thermal expansion and contraction of various attached heterogeneous building components. The eave truss is supported by the roof beams, and a single eave truss is attached to the roof, the ends of the roof beams, and the wall along the full length of each end of the building. The eave truss attachment to the wall is in shear only at the center portion of the truss; all other attachments to the walls from the eave truss are made through horizontally slotted holes in the eave truss to allow normal thermal expansion and contraction of the heterogeneous parts.