Wind pressures on open rain screen walls : Place Air Canada
| Autor: | U. Ganguli, W. A. Dalgliesh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1988 |
| Předmět: |
charge de neige
Peak pressure Murs à écran pare-pluie Rainscreen wind load field measurements rain screens pressure differentials HVAC ecran pare-pluie membrane d'étanchéité General Materials Science pression differentielle air barriers precast open rain screen wall panels maximum load measurement penétration de la pluie wind loads Air barrier rain penetration Civil and Structural Engineering geography geography.geographical_feature_category business.industry Mechanical Engineering Stack (geology) Building and Construction Structural engineering Air and vapour barriers panneau de beton préfabriqué stack heating ventilating air conditioning (hvac) effects Pressure difference Pare-vapeur et pare-air Rainscreen walls wind pressure differences Mechanics of Materials Environmental science peak gust resolution business Spatial extent precast concrete panels Building envelope montreal quebec canada location air barrier assembly |
| Popis: | Wind pressure differences are measured across the rain screen and across the air barrier assembly of precast open rain screen wall panels. Twelve panels are instrumented mostly on the west, north, and east walls of the 24th floor of a 27-story office building in downtown Montreal. 32 channels were scanned at 30 times per second to allow reasonable resolution of peak gusts. However, some doubt remains about their spatial extent, as each 3.6 X 2.9 m (11. 8 X 9.5 ft) panel had only one external tap. The maximum load measured on the rain screen in one year of continuous monitoring was 285 Pa (6 psf), of duration 1 second. The largest pressure difference across an entire panel of the building envelope never coincided with peak pressure differences on the rain screen. However, maxima due to wind only, across windward panels, ranged from 400-475 Pa (8.4-9. 9 psf). Pressure differences across the air barrier assembly of wall panels included stack and heating, ventilating, and air conditioning (HVAC) effects of up to 150 Pa (3.1 psf) when outside temperatures dropped to -20 degrees C (-4 degrees F). |
| Databáze: | OpenAIRE |
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