Extreme wind speeds for various return periods during rainfall

Murakami, Shuzo; Iwasa, Yoshiteru; Morikawa, Yasushige; Chino, Noriko

doi:10.1016/0167-6105(87)90038-9

Cited by 8 publications

(2 citation statements)

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“…Set water volumes differed according to the different types of devices used. In accordance with the Reference Literatures [3], [4], for the water cistern type these water volumes were calculated based upon values expected to recreate 10 years' worth of maximum hourly precipitation volume in each architectural region, whereas for the water spray type, these values were calculated based upon the dimensions of the wind tunnel exit nozzle.…”

Section: Test Facility and Analysis Proceduresmentioning

confidence: 99%

“…Wind velocities used in the water leakage experiments were set at a maximum of 40 m/s, based upon a figure of 20 m/s calculated by hypothesizing 27.9 m/s [3], [4], the wind velocity of Okinawa Prefecture which posts the highest values in western Japan, using values expected to recreate 10 years' worth of maximum wind velocities during precipitation (average wind velocity over a 10-minute period) when hourly rainfall volumes are 11 mm/h or greater. Set water volumes differed according to the different types of devices used.…”

Section: Test Facility and Analysis Proceduresmentioning

confidence: 99%

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Water leak diagnosis of tiled roofs under vibration and scattering by wind tunnel experiment

Okamoto

2011

Proceedings of 2011 International Conference on Fluid Power and Mechatronics

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This paper describes a water leak test of roof tiles.The 100 roof tiles were set up on 10 lines and 10 rows on the pitched roof in the downstream of the flow from the wind tunnel. The flow velocity was increased gradually from the low velocity to the high velocity, and the effects of the wind on the roof tiles were investigated by the water leak test. The situation of the water leak test was filmed by video camera. Two accelerometers were simultaneously used. The roof tiles which showed significant vibration at any velocity were found in a series of experiments and the accelerometers were attached to the two neighboring roof tiles on the model roof. The water leak phenomena in the experiment by using the artificial rainfall apparatus are discussed in this paper. Some mechanisms with relatively large amplitudes at low-frequency vibrations, which caused water leak phenomena were made clear.

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Section: Test Facility and Analysis Proceduresmentioning

confidence: 99%

Section: Test Facility and Analysis Proceduresmentioning

confidence: 99%

Water leak diagnosis of tiled roofs under vibration and scattering by wind tunnel experiment

Okamoto

2011

Proceedings of 2011 International Conference on Fluid Power and Mechatronics

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Representativity of Extreme Wind Data

Wieringa¹

1996

Hydrology of Disasters

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Projected changes to wind loads coinciding with rainfall for building design in Canada based on an ensemble of Canadian regional climate model simulations

2020

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Strong wind coinciding with rainfall is an important weather phenomenon in many science and engineering fields. This study investigates changes in hourly extreme driving rain wind pressure (DRWP)—a climatic variable used in building design in Canada—for future periods of specified global mean temperature change using an ensemble of a Canadian regional climate model (CanRCM4) driven by the Canadian Earth system model (CanESM2) under the Representative Concentration Pathway 8.5 scenario. Evaluation of the model shows that the CanRCM4 ensemble reproduces hourly extreme wind speeds and rainfall (> 1.8 mm/h) occurrence frequency and the associated design (5-year return level) DRWP across Canada well when compared with 130 meteorological stations. Significant increases in future design DRWP are projected over western, eastern, and northern Canada, with the areal extent and relative magnitude of the increases scaling approximately linearly with the amount of global warming. Increases in future rainfall occurrence frequency are driven by the combined effect of increases in precipitation amount and changes in precipitation type from solid to liquid due to increases in air temperature; these are identified as the main factors leading to increases in future design DRWP. Future risk ratios of the design DRWP are highly dependent on those of the rainfall occurrence, which shows large increases over the three regions, while they are partly affected by the increases in future extreme wind speeds over western and northeastern Canada. Increases in DRWP can be an emerging risk for existing buildings, particularly in western, eastern, and northern Canada, and a consideration for managing and designing buildings across Canada.

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Extreme wind speeds for various return periods during rainfall

Cited by 8 publications

References 0 publications

Water leak diagnosis of tiled roofs under vibration and scattering by wind tunnel experiment

Water leak diagnosis of tiled roofs under vibration and scattering by wind tunnel experiment

Representativity of Extreme Wind Data

Projected changes to wind loads coinciding with rainfall for building design in Canada based on an ensemble of Canadian regional climate model simulations

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