Item: Measurements of avalanche wads east riverside avalanche shed, cowrado
Title: Measurements of avalanche wads east riverside avalanche shed, cowrado
Proceedings: 1990 International Snow Science Workshop, Bigfork, Montana USA, October 9-13
Authors: Arthur 1. Mears
Abstract: Avalanche-impact loads were measured on external pressure sensors mounted on the roof of the East Riverside avalanche shed, Highway 550, 8 km south of Ouray, Colorado, during the winters 1987/88, 1988/89, and 1989/90. The four small-to-moderate sized avalanches recorded produced pressures normal to the roof surface ranging from 4.8 to 17.0 KPa (100 to 355 lbs/ft2) and pressures parallel to the roof ranging from 129 KPa to 210 KPa (2,700 to 4,400 lbs/ft2). During two events low-density "powder-blast" pressures of 19 to 29 KPa (400 to 600 lbs/ff) preceded the main flowing avalanche mass by 0.5 seconds. The typical avalanche-loading event lasted 3 to 13 seconds, a time period in which 10 to 20 pressure peaks were recorded.
Keywords: roof, load, avalanche, density
Digital Abstract Not Available