When do I use corner pressures?

Areas of high pressure occur at the outer corners of buildings. AS 4055 gives separate pressures for windows and doors with 25% or more of the width of a single panel or pane within 1200 mm of the building edge.

AS 1170.2 wind pressure calculations give two different local pressure areas at building corners, depending on the size of the window and its proximity to the corner. If in doubt, refer to the building designer or engineer.