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A platform for research: civil engineering, architecture and urbanism
Wind pressures on large roofs of low buildings and wind codes and standards
Abstract Current wind codes and standards have load provisions dealing with low buildings of common configurations. Large buildings, say 100m long, had not been considered when these provisions were established. As a result, the interaction between wind and buildings of such geometries should be investigated for the assessment of current wind provisions in terms of their applicability to such configurations. The present wind tunnel study examines nine large low-rise buildings 5, 7.5 and 10m high for several wind directions ranging from 0° to 90° at increments of 15°. The buildings have square plans with full-scale horizontal dimensions ranging from 60 to 180m. Results show that building plan sizes have significant effects on the generated wind loads on building roofs. Also, application of current provisions on building geometries of large roofs and low height may lead to considerably conservative and uneconomic design. An exception for very large low buildings, as far as the determination of the sizes of roof edge and corner zones is concerned, has been recommended to rectify the deficiency of wind code and standard provisions for these building geometries.
Highlights The paper addresses the application of wind codes and standards for the design of very large flat-roofed buildings. Wind tunnel measurements show a different distribution of roof pressures for large buildings. An exception for the evaluation of the size of the edge/corner for very large buildings has been recommended.
Wind pressures on large roofs of low buildings and wind codes and standards
Abstract Current wind codes and standards have load provisions dealing with low buildings of common configurations. Large buildings, say 100m long, had not been considered when these provisions were established. As a result, the interaction between wind and buildings of such geometries should be investigated for the assessment of current wind provisions in terms of their applicability to such configurations. The present wind tunnel study examines nine large low-rise buildings 5, 7.5 and 10m high for several wind directions ranging from 0° to 90° at increments of 15°. The buildings have square plans with full-scale horizontal dimensions ranging from 60 to 180m. Results show that building plan sizes have significant effects on the generated wind loads on building roofs. Also, application of current provisions on building geometries of large roofs and low height may lead to considerably conservative and uneconomic design. An exception for very large low buildings, as far as the determination of the sizes of roof edge and corner zones is concerned, has been recommended to rectify the deficiency of wind code and standard provisions for these building geometries.
Highlights The paper addresses the application of wind codes and standards for the design of very large flat-roofed buildings. Wind tunnel measurements show a different distribution of roof pressures for large buildings. An exception for the evaluation of the size of the edge/corner for very large buildings has been recommended.
Wind pressures on large roofs of low buildings and wind codes and standards
Alrawashdeh, Hatem (author) / Stathopoulos, Ted (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 147 ; 212-225
2015-09-14
14 pages
Article (Journal)
Electronic Resource
English
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