Please can one of you brainy people out there help me. I need to work out the force to open a door when there is a 60pascal pressure acting against it. The size of the door is 1000mm wide x 2000mm high. The differential Pressure is 60 pascals The handle is 70mm away from the leading edge of the door. Ideally I need the calculation so I do the calc myself on future projects. I did find the attached documents, just not fully sure what figures to use where. Any help would be much appreciated.