The Worst Case Pressure Estimates are the envelope of the estimated peak positive and negative surface pressures in kPa. Like the Worst Case Pressure Coefficients, this is the lowest minimum or highest maximum pressure coefficient among all simulated wind directions at each location on the building, but factored by the gradient height wind pressure and adjusted by the Internal Pressure (specified or calculated through the Scenario setup parameters). Orbital Stack adds or subtracts the internal pressure value to generate the most extreme pressure.
The gradient height wind pressure used in Cladding AI is based on the mean wind speed at gradient height, 600m above ground. This wind speed is derived from the Design Wind Speed (hourly mean in m/s) and Design Wind Speed Reference Height (in m) specified in the input parameters.
