Building panels

Claim 1

A building panel having a rectangular configuration in plan view, said panel including an upper face comprising a main web including two planar isosceles triangular portions extending outwardly from a common inner side, the common inner side of said triangular portions joining said triangular portions to form a parallelogram, the planes of said triangular portions intersecting at an angle at the common side and sloping downwardly therefrom toward the opposed outer apices of the triangular portions, upwardly and outwardly inclined pairs of triangular walls adjoining the opposite sides of the outwardly extending isosceles triangular portions, the outer apices of the inclined triangular walls being contiguous with the opposed outer apices of the triangular portions of the main web, each pair of inclined triangular walls having a common inner side and lying in the same vertical plane as the common side of the triangular portions, and triangular apron portions adjoining the outer longitudinal side of each of the inclined triangular walls, the apices of said apron portions lying in said vertical plane, the outer end of each apron portion further lying in vErtical planes containing the contiguous outer apices of the triangular walls and the triangular portions, whereby when the outer ends of the triangular apron portions are supported in a substantially horizontal plane, water falling on said building panel will drain toward at least one outer edge of said building panel.