Determination of open, pressure equalized rainscreen performance from full scale measurements Conference

cited authors

  • Accardo, M; Irwin, P; Ritchie, K; Sommerstien, M

fiu authors


  • The performance of Open Pressure Equalized Rainscreen wall systems rely on their ability to equalise the wind pressure across the outer screen with the pressure within the wall cavity. The pressure equalisation process depends on a number of factors, including the sizes and locations of vents connecting the rear side cavity to the exterior, the volume of the cavity, the flexibility of the back panel and rainscreen, the temporal and spatial fluctuations of the exterior wind pressures, and the degree of compartmentalization behind the screen. The simulation of all these factors on a mock-up in a laboratory is difficult, especially the spatial fluctuations of the wind pressures and the associated effects of compartmentalization. Thus while mock-up tests can be useful in assisting in the development of theories for the equalization process, the final test has to be of a real wall in a real wind. This paper describes full scale monitoring of the wind pressures acting on an Open Pressure Equalized rainscreen system on a nine storey building in Revere, Massachusetts. Measurements of the exterior pressure, cavity pressure and net pressure (leading to exterior panel loading) were made during a number of wind events over a period on ten months. The paper describes the measurement system, analysis methods and the principal results. The results are compared with theoretical predictions.

publication date

  • December 1, 2000

start page

  • 221