Codification of internal pressures for building design

Internal pressures in buildings are dependent on the type, position and sizes of openings in the envelope, volume of the building and the approach wind speed. In the case of a building with a dominant opening, Helmholtz resonance could also have a significant influence on the internal pressure fluctuations. This paper reviews the governing equation for fluctuating internal pressure based on the Helmholtz resonator model and previous proposals for codification of peak internal pressures, and presents a new simpler form based on recent experimental data.