Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wind loads on roof-mounted equipment on low-rise buildings with low-slope roofs
https://orcid.org/0000-0002-7751-104X
https://orcid.org/0000-0002-0784-3014
Abstract Damage surveys have indicated that roof-mounted equipment has significant vulnerability to extreme windstorms. The study investigates anchorage and envelope wind loads on 1:50 scale, roof-mounted equipment. Cubes with equivalent full-scale side lengths of 0.9 m, 3 m, and 4.6 m, and a rectangular prism with dimensions of 6 × 3 × 1.5 m (length × width × height) are examined. Experiments were conducted with this equipment placed at four different locations, which represent the roof corner, perimeter, and field regions. Additionally, the equipment was also tested when flush-mounted and elevated to 1.5 m, 3 m, and 4.6 m above the roof surface. It is found that wind loads relevant for anchorage design are a function of the size of the equipment, elevation above the roof, and roof location. The uplift wind loads for anchorage design of flush-mounted and elevated equipment are different, irrespective of the equipment size because of the exposed bottom surface for elevated equipment. However, the elevation effect on drag wind loads for anchorage design is negligible. The envelope wind loads are distinct from both the anchorage loads and the cladding loads on bare-roofed, low-rise buildings due to differences in the associated local aerodynamics.
Highlights Investigated different sizes and shapes of rooftop equipment and proposed anchoring and envelope wind load recommendations. Compared the recommendations with previous literature to identify critical parameters that affect equipment’s wind loads. Proposed a simplified design approach to estimate moment coefficients from proposed drag and uplift coefficients. Summarized the limitation of the current study that identifies areas for future research.
Wind loads on roof-mounted equipment on low-rise buildings with low-slope roofs
https://orcid.org/0000-0002-7751-104X
https://orcid.org/0000-0002-0784-3014
Abstract Damage surveys have indicated that roof-mounted equipment has significant vulnerability to extreme windstorms. The study investigates anchorage and envelope wind loads on 1:50 scale, roof-mounted equipment. Cubes with equivalent full-scale side lengths of 0.9 m, 3 m, and 4.6 m, and a rectangular prism with dimensions of 6 × 3 × 1.5 m (length × width × height) are examined. Experiments were conducted with this equipment placed at four different locations, which represent the roof corner, perimeter, and field regions. Additionally, the equipment was also tested when flush-mounted and elevated to 1.5 m, 3 m, and 4.6 m above the roof surface. It is found that wind loads relevant for anchorage design are a function of the size of the equipment, elevation above the roof, and roof location. The uplift wind loads for anchorage design of flush-mounted and elevated equipment are different, irrespective of the equipment size because of the exposed bottom surface for elevated equipment. However, the elevation effect on drag wind loads for anchorage design is negligible. The envelope wind loads are distinct from both the anchorage loads and the cladding loads on bare-roofed, low-rise buildings due to differences in the associated local aerodynamics.
Highlights Investigated different sizes and shapes of rooftop equipment and proposed anchoring and envelope wind load recommendations. Compared the recommendations with previous literature to identify critical parameters that affect equipment’s wind loads. Proposed a simplified design approach to estimate moment coefficients from proposed drag and uplift coefficients. Summarized the limitation of the current study that identifies areas for future research.
Wind loads on roof-mounted equipment on low-rise buildings with low-slope roofs
https://orcid.org/0000-0002-7751-104X
https://orcid.org/0000-0002-0784-3014
Abstract Damage surveys have indicated that roof-mounted equipment has significant vulnerability to extreme windstorms. The study investigates anchorage and envelope wind loads on 1:50 scale, roof-mounted equipment. Cubes with equivalent full-scale side lengths of 0.9 m, 3 m, and 4.6 m, and a rectangular prism with dimensions of 6 × 3 × 1.5 m (length × width × height) are examined. Experiments were conducted with this equipment placed at four different locations, which represent the roof corner, perimeter, and field regions. Additionally, the equipment was also tested when flush-mounted and elevated to 1.5 m, 3 m, and 4.6 m above the roof surface. It is found that wind loads relevant for anchorage design are a function of the size of the equipment, elevation above the roof, and roof location. The uplift wind loads for anchorage design of flush-mounted and elevated equipment are different, irrespective of the equipment size because of the exposed bottom surface for elevated equipment. However, the elevation effect on drag wind loads for anchorage design is negligible. The envelope wind loads are distinct from both the anchorage loads and the cladding loads on bare-roofed, low-rise buildings due to differences in the associated local aerodynamics.
Highlights Investigated different sizes and shapes of rooftop equipment and proposed anchoring and envelope wind load recommendations. Compared the recommendations with previous literature to identify critical parameters that affect equipment’s wind loads. Proposed a simplified design approach to estimate moment coefficients from proposed drag and uplift coefficients. Summarized the limitation of the current study that identifies areas for future research.
Wind loads on roof-mounted equipment on low-rise buildings with low-slope roofs
Doddipatla, Lakshmana S. (Autor:in) / Kopp, Gregory A. (Autor:in)
25.01.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Wind loads on photovoltaic arrays mounted parallel to sloped roofs on low-rise buildings
| Online Contents | 2015
Simulation Requirements for Roof Wind Loads near the Corners of Low Buildings with Low-Slope Roofs
| British Library Conference Proceedings | 1999