초록 ▼

An aerodynamic system attached to the outer side of the roof perimeter edge to mitigate wind generated vortices and uplift loads on the roof perimeter area of a building, applicable for both new constructions and retrofits of existing buildings. A roof edge guard is generally installed alongside a r

An aerodynamic system attached to the outer side of the roof perimeter edge to mitigate wind generated vortices and uplift loads on the roof perimeter area of a building, applicable for both new constructions and retrofits of existing buildings. A roof edge guard is generally installed alongside a roof edge, and mounted onto an existing fascia or bargeboard. As an option most appropriate for new constructions, it can also be mounted directly onto a roof frame member in place of fascias or bargeboard. The configuration modifies the cross-sectional shape of otherwise abrupt roof edges that tend to generate strong vortex during high winds.

대표청구항 ▼

What I claim as my invention is: 1. An assembly attached to an outer side of a perimeter overhang, or a part therein, of a roof on a walled structure, said assembly comprising: a) an elongated fascia member having an outer face including at least a lower face portion, an intermediate face portion a

What I claim as my invention is: 1. An assembly attached to an outer side of a perimeter overhang, or a part therein, of a roof on a walled structure, said assembly comprising: a) an elongated fascia member having an outer face including at least a lower face portion, an intermediate face portion and an upper face portion consecutively adjoining to form a generally arch-like cross-sectional shape for the outer face of said fascia member, wherein said upper face portion, or a segment thereof, planar or curved, generally being disposed with an upper end edge thereof in close proximity to, facing substantially horizontally and opposed to, and longitudinally in parallel with, an upper and outer edge of said outer side of said perimeter overhang, and laterally extending generally outwardly away from said perimeter overhang and forming an angle within 55�� of a roof plane where said upper face portion approaches said perimeter overhang, wherein the user end edge does not extend substantially above said roof plane; said lower face portion, or a segment thereof, planar or curved, generally being disposed with a lower edge thereof above or in proximity to, and longitudinally in parallel with, a lower and outer edge of said perimeter overhang, and laterally extending generally outwardly away from said perimeter overhang; said intermediate face portion, having one or more planar or curved segments, connecting said lower face portion and said upper face portion; and wherein slope change across a junction between all adjacent face portions, and between all adjacent segments therein, being generally within 55��; whereby to reduce aerodynamic forces on said roof; (b) a mounting device to secure said elongated fascia member onto said perimeter overhang. 2. The assembly of claim 1, wherein the outer face of said fascia member containing a corrugated segment or corrugated segments. 3. The assembly of claim 1, wherein the outer face of said fascia member containing a step or steps with a generally small riser size. 4. An assembly attached to an outer side of a perimeter, or a part therein, of a roof on a walled structure, said assembly comprising: (a) an elongated fascia member having an outer face including at least a lower face portion, an intermediate face portion and an upper face portion consecutively adjoining to form a generally arch-like cross-sectional shape for the outer face of said fascia member, wherein said upper face portion, or a segment thereof, planar or curved, generally being disposed with an upper end edge thereof in close proximity to, facing substantially horizontally and opposed to, and longitudinally in parallel with, an upper and outer edge of said outer side of said perimeter, and laterally extending generally outwardly away from said perimeter and forming an angle within 55�� of a roof plane where said upper face portion approaches said perimeter, wherein the upper end edge does not extend substantially above said roof plane; said lower face portion, or a segment thereof, planar or curved, generally being disposed with a lower edge thereof in proximity to, and longitudinally in parallel with, a vertical or nearly vertical outer surface below said upper and outer edge of said roof perimeter, and laterally extending generally outwardly away from said outer surface; said intermediate face portion, having one or more planar or curved segments, connecting said lower face portion and said upper face portion; and wherein slope change across a junction between all adjacent face portions, and between all adjacent segments therein, being generally within 55��; whereby to reduce aerodynamic forces on said roof; (b) a mounting device to secure said elongated fascia member onto said perimeter. 5. The assembly of claim 4, wherein the outer face of said fascia member containing a corrugated segment or corrugated segments. 6. The assembly of claim 4, wherein the outer face of said fascia member containing a step or steps with a generally small riser size. 7. The assembly of claim 1, wherein the lower face portion in a vicinity of the lower edge thereof forms an obtuse exterior angle with a surface portion of said perimeter overhang. 8. The assembly of claim 4, wherein the lower face portion in a vicinity of the lower edge thereof forms an obtuse exterior angle with the vertical or nearly vertical outer surface of said roof perimeter. 9. An assembly for attachment to an outer side of a perimeter of a roof, comprising: an elongated fascia member having a substantially arch-shaped outer face formed by at least a lower face portion, an intermediate face portion, and an upper face portion; wherein a segment of said upper face portion including an upper end edge, is configured to be arranged to face substantially horizontally and be opposed to, and be longitudinally substantially parallel with, an upper and outer edge of said outer side of said roof perimeter, said upper face portion being planar or curved for extension generally laterally outwardly away from said roof perimeter and for forming an angle within about 55�� with a roof plane where said upper face portion approaches said roof perimeter; wherein a segment of said lower face portion including a lower end edge, is configured to be arranged in a facing relationship to a surface portion below said upper and outer edge of said roof perimeter, said lower face portion being planar or curved for extension generally laterally outwardly away from said surface portion; wherein said intermediate face portion includes one or more planar or curved segments interconnecting said lower face portion and said upper face portion; wherein an outermost point on said substantially arch-shaped outer face of said elongated fascia member is located closer to said upper end edge than to said lower end edge; wherein a slope change across a junction between all adjacent face portions, and between all adjacent segments thereof, being generally within about 55��; and wherein said assembly further comprises a mounting device for securing said elongated fascia member onto said roof perimeter, the mounting device defining a drainage channel, the fascia member contacting a portion of the mounting device defining the drainage channel. 10. The assembly of claim 9, wherein the outer face of said fascia member is formed with one or more corrugated segments. 11. The assembly of claim 9, wherein the outer face of said fascia member is formed with one or more steps. 12. The assembly of claim 9, wherein the lower face portion in a vicinity of the lower end edge forming an obtuse exterior angle with the surface portion below said upper and outer edge of said roof perimeter. 13. The assembly of claim 9, further comprising a mounting device for securing said elongated fascia member onto said roof perimeter. 14. The assembly of claim 13, wherein the mounting device includes at least one anchor bar. 15. The assembly of claim 14, wherein the at least one anchor bar defines a channel configured to facilitate drainage, and wherein the fascia member contacts a portion of the anchor bar defining the channel. 16. The assembly of claim 9, wherein the assembly is configured to be attached to the perimeter of the roof formed on a roof overhang. 17. The assembly of claim 1, wherein an outermost point on said generally arch-like outer face of said fascia member is located closer to said upper end edge of said upper face portion than to said lower edge of said lower face portion. 18. The assembly of claim 1, wherein the upper end edge does not extend inwardly of a vertical plane defined by the upper and outer edge of said outer side of said perimeter overhang. 19. The assembly of claim 4, wherein an outermost point on said generally arch-like outer face of said fascia member is located closer to said upper end edge than to said lower edge. 20. The assembly of claim 4, wherein the upper end edge does not extend inwardly of a vertical plane defined by the upper and outer edge of said outer side of said roof perimeter. 21. The assembly of claim 9, wherein a portion of the lower face portion is substantially planar and forms an obtuse exterior angle with the surface portion below said upper and outer edge of said roof perimeter. 22. The assembly of claim 9, wherein the upper end edge of said upper face portion is configured to be disposed so as to not extend substantially above the level of said upper and outer edge of said roof perimeter. 23. The assembly of claim 9, wherein the upper end edge of said upper face portion is configured to be disposed so as to not extend inwardly of a vertical plane defined by the upper and outer edge of said perimeter. 24. An assembly for attachment to an outer side of a perimeter of a roof, comprising: an elongated fascia member having a substantially arch-shaped outer face formed by at least a lower face portion, an intermediate face portion, and an upper face portion; wherein a segment of said upper face portion including an upper end edge is configured to be arranged to face an upper and outer edge of said outer side of said roof perimeter, said upper face portion being planar or curved for extension generally laterally outwardly away from said roof perimeter and for forming an angle within about 55�� with a roof plane where said upper face portion approaches said roof perimeter; wherein a segment of said lower face portion including a lower end edge, is configured to be arranged in a facing relationship to a surface portion below said upper and outer edge of said roof perimeter, said lower face portion being planar or curved for extension generally laterally outwardly away from said surface portion; wherein said intermediate face portion includes one or more planar or curved segments interconnecting said lower face portion and said upper face portion; wherein the substantially arch-shaped outer face of the elongated fascia member defines a length as measured along the arch-shaped outer face from the upper end edge to the lower end edge, wherein a first distance as measured from a mid-point of the length directly to the upper end edge is shorter than a second distance as measured from the mid-point of the length directly to the lower end edge; wherein a slope change across a junction between all adjacent face portions, and between all adjacent segments thereof, being generally within about 55��; and wherein said assembly further comprises a mounting device for securing said elongated fascia member onto said roof perimeter, the mounting device defining a drainage channel, the fascia member contacting a portion of the mounting device defining the drainage channel. 25. The assembly of claim 24, wherein said upper end edge of said upper face portion is configured to be arranged to face substantially horizontally and be opposed to said upper and outer edge of said outer side of said roof perimeter. 26. The assembly of claim 24, wherein a portion of the lower face portion is substantially planar and forms an obtuse exterior angle with the surface portion below said upper and outer edge of said roof perimeter. 27. The assembly of claim 24, wherein the upper end edge of said upper face portion is configured to be disposed so as to not extend substantially above the level of said upper and outer edge of said roof perimeter. 28. The assembly of claim 24, wherein the upper end edge of said upper face portion is configured to be disposed so as to not extend inwardly of a vertical plane defined by the upper and outer edge of said perimeter. 29. The assembly of claim 24, wherein the outer face of said fascia member is formed with one or more corrugated segments. 30. The assembly of claim 24, wherein the outer face of said fascia member is formed with one or more steps.