Abstract: A hollow brick includes a bottom wall, two side walls, two intermediate walls, and a top wall. The top wall defines three arched top boundary surfaces of three ventilation holes bounded by the bottom wall, the side walls, the intermediate walls and the top wall. Two supports, each of which supports a first corrugated plate, project from the side walls. Two inner holding ribs are in two ventilation holes respectively proximal to the side walls and lie below the arched top boundary surfaces. A middle one of the arched top boundary surfaces abuts and presses a curved middle portion of a second corrugated plate, and the inner holding ribs respectively lift lateral portions of the second corrugated plate.

Abstract: A hollow brick includes a bottom wall, two side walls, two intermediate walls, and a top wall. The top wall defines three arched top boundary surfaces of three ventilation holes bounded by the bottom wall, the side walls, the intermediate walls and the top wall. Two supports, each of which supports a first corrugated plate, project from the side walls. Two inner holding ribs are in two ventilation holes respectively proximal to the side walls and lie below the arched top boundary surfaces. A middle one of the arched top boundary surfaces abuts and presses a curved middle portion of a second corrugated plate, and the inner holding ribs respectively lift lateral portions of the second corrugated plate.

Abstract: A hollow brick includes a bottom wall, two side walls projecting from the bottom wall, a plurality of intermediate walls projecting from the bottom wall between the side walls, a top wall opposite to the bottom wall and connecting the side walls and the intermediate walls, and a plurality of ventilation holes bounded by the bottom wall, the side walls, the intermediate walls and the top wall. The bottom wall has a plurality of foot portions projecting downwardly and spaced apart from each other. A bottom groove is formed between two adjacent ones of the foot portions.

Abstract: A ventilating and heat dissipating assembly for a roof includes hollow bricks, first corrugated plates and second corrugate plates. Each first corrugated plate spans a gap between two pairs of the hollow bricks that are spaced apart along intersecting first and second directions. Each second corrugated plate spans a gap formed between two of the hollow bricks spaced apart in the first direction and a gap between two of the first corrugated plates spaced apart in the second direction.

Abstract: A corrugated plate assembly includes at least two corrugated plates each having a crest portion. The crest portion is asymmetric and includes first and second arcuate ends, two longitudinal lateral sides connected between the first and second arcuate ends and two indentations indented from the first and second arcuate ends. The second arcuate ends of the corrugated plates are interconnected in such a manner that the indentations of the second arcuate ends are intersected each other and that the second arcuate ends overlap with each other. Ventilation gaps are formed between overlapping parts of the second arcuate ends.

Abstract: A hollow brick includes a bottom wall, two side walls projecting from the bottom wall, a plurality of intermediate walls projecting from the bottom wall between the side walls, and a top wall opposite to the bottom wall and connecting the side walls and the intermediate walls. A plurality of ventilation holes is bounded by the bottom wall, the side walls, the intermediate walls and the top wall. Each ventilation hole has two ventilation open ends opposite to each other along the transverse sides of the bottom wall. Two outer holding ribs projects respectively from outer surfaces of the side walls in opposite outward directions.

Abstract: A hollow brick includes a bottom wall, two side walls projecting from the bottom wall, a plurality of intermediate walls projecting from the bottom wall between the side walls, a top wall opposite to the bottom wall and connecting the side walls and the intermediate walls, and a plurality of ventilation holes bounded by the bottom wall, the side walls, the intermediate walls and the top wall. The bottom wall has a plurality of foot portions projecting downwardly and spaced apart from each other. A bottom groove is formed between two adjacent ones of the foot portions.

Abstract: A corrugated plate assembly includes at least two corrugated plates each having a crest portion. The crest portion is asymmetric and includes first and second arcuate ends, two longitudinal lateral sides connected between the first and second arcuate ends and two indentations indented from the first and second arcuate ends. The second arcuate ends of the corrugated plates are interconnected in such a manner that the indentations of the second arcuate ends are intersected each other and that the second arcuate ends overlap with each other. Ventilation gaps are formed between overlapping parts of the second arcuate ends.

Abstract: A ventilating and heat dissipating assembly for a roof includes hollow bricks, first corrugated plates and second corrugate plates. Each first corrugated plate spans a gap between two pairs of the hollow bricks that are spaced apart along intersecting first and second directions. Each second corrugated plate spans a gap formed between two of the hollow bricks spaced apart in the first direction and a gap between two of the first corrugated plates spaced apart in the second direction.