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Area Load tab

Used to apply area (panel) load which will be distributed on surrounding beams based on a one way distribution.

Pressure This load is a one-way distributed pressure load on members that circumscribe a panel. Enter the value of the area load (force per unit area) in the current units. This load always acts along the positive local y-axis on the two longest members in each panel.
Direction Select the direction in which the force is applied. Local Z indicates the direction in local coordinates, perpendicular to the panel; GX, GY, GZ indicate the loads in global coordinates.