A self supporting panel system used to fabricate ceilings, floors, walls, or roofs. The panel system is assembled from a plurality of panels, each having a core that is sandwiched between opposing plate members. In a preferred embodiment, the core of each panel includes a unifying material to enhance the load bearing capacity of the panel.

A self supporting panel system used to fabricate ceilings, floors, walls, or roofs. The panel system is assembled from a plurality of panels, each having a core that is sandwiched between opposing plate members. In a preferred embodiment, the core of each panel includes a unifying material to enhance the load bearing capacity of the panel.

Method for designing a corrugated roofing sheet made of natural fibers, impregnated with bitumen including a uniform pattern of mutually parallel alternating corrugations borne by a mid-plane, the corrugations defining rounded crests each separated from the next by a rounded trough, the crests and trough being connected by alternately inclined portions, the transverse offset between two successive crests being equal to the transverse offset between two successive troughs and defining the pitch P of the corrugations, the sheet having a thickness E of material substantially constant over its extent, and a height H being twice the distance between the mid-plane and the exterior surface of a crest or twice the distance between the mid-plane and the exterior surface of a trough, these two distances being identical. The height, thickness and pitch values are determined by Fi<H.sup.3/(8?E?(H+P))<Fs, where Fi=25 mm and Fs=35 mm.

A roof system includes a roof panel formed of concrete and an architectural surface such as a corrugated surface. A first layer of reinforcing material is disposed along and spaced inwardly from a first surface of the roof panel, and an optional second layer of reinforcing material is disposed along and spaced inwardly from a second surface of the roof panel. The first layer of reinforcing material is spaced from the second layer of reinforcing material. The reinforcing material may be formed of fiber-reinforced polymer mesh, made with carbon fibers or glass fibers. FRP rebar may be used in conjunction with FRP mesh to provide added structural strength. The roof panel may include one or more elongated ribs having a thickness greater than adjacent portions of the roof panel. In other aspects, concrete structures with reinforcing material may be used for either roof panels or wall applications.

A roof system includes a roof panel formed of concrete and an architectural surface such as a corrugated surface. A first layer of reinforcing material is disposed along and spaced inwardly from a first surface of the roof panel, and an optional second layer of reinforcing material is disposed along and spaced inwardly from a second surface of the roof panel. The first layer of reinforcing material is spaced from the second layer of reinforcing material. The reinforcing material may be formed of fiber-reinforced polymer mesh, made with carbon fibers or glass fibers. FRP rebar may be used in conjunction with FRP mesh to provide added structural strength. The roof panel may include one or more elongated ribs having a thickness greater than adjacent portions of the roof panel. In other aspects, concrete structures with reinforcing material may be used for either roof panels or wall applications.

A method of injection molding a building product includes providing an injection mold with a plurality of gates located adjacent a perimeter of the injection mold. The method further includes commingling a first material and a second material into a flow, the second material comprising a color that contrasts with a color of the first material and injecting the commingled flow into the plurality of gates to form a building product. Thereafter, the method includes removing the building product from the injection mold. The second material extends through an interior of the building product and appears as contrasting streaks on an exterior of the building product to form a variegated grain appearance. The method also includes notching a portion of the building product, such that the building product has a substantially linear grain in an exposed portion thereof.

A method of injection molding a building product includes providing an injection mold with a plurality of gates located adjacent a perimeter of the injection mold. The method further includes commingling a first material and a second material into a flow, the second material comprising a color that contrasts with a color of the first material and injecting the commingled flow into the plurality of gates to form a building product. Thereafter, the method includes removing the building product from the injection mold. The second material extends through an interior of the building product and appears as contrasting streaks on an exterior of the building product to form a variegated grain appearance. The method also includes notching a portion of the building product, such that the building product has a substantially linear grain in an exposed portion thereof.

A cover apparatus (1), comprising cover plates (2) continuing in a position of use in a common plane and in at least one row, is formed in a mutual edge-side contact region (3) through overlapping and in a rainproof manner, such that edges (5) running parallel to each other and spaced apart on each cover plate (2) are designed differently (6), and the top side (7) of the cover plate (2), a continuing web (8) and a rain gutter (9) under said web (8) are arranged on a first edge (5), wherein said rain gutter belongs to the same first edge (5). If necessary, penetrating rain water (12) can be caught in the rain gutter (9) by overlapping edge-side webs (8) in the position of use.

A method of injection molding a building product includes providing an injection mold with a plurality of gates located adjacent a perimeter of the injection mold. The method further includes commingling a first material and a second material into a flow, the second material comprising a color that contrasts with a color of the first material and injecting the commingled flow into the plurality of gates to form a building product. Thereafter, the method includes removing the building product from the injection mold. The second material extends through an interior of the building product and appears as contrasting streaks on an exterior of the building product to form a variegated grain appearance. The method also includes notching a portion of the building product, such that the building product has a substantially linear grain in an exposed portion thereof.

A method of injection molding a building product includes providing an injection mold with a plurality of gates located adjacent a perimeter of the injection mold. The method further includes commingling a first material and a second material into a flow, the second material comprising a color that contrasts with a color of the first material and injecting the commingled flow into the plurality of gates to form a building product. Thereafter, the method includes removing the building product from the injection mold. The second material extends through an interior of the building product and appears as contrasting streaks on an exterior of the building product to form a variegated grain appearance. The method also includes notching a portion of the building product, such that the building product has a substantially linear grain in an exposed portion thereof.