Sums of Drag Forces
In the lower part of the graphical window, the Legend indicates the check sums of the drag forces. They represent the resultants of the wind load in the global directions X, Y, and Z. You can compare the drag forces acting on the Original Model and on the Simplified Model. If there are considerable differences, you ought to increase the level of detail in the Edit Model dialog box for a more refined simplified model (see the Chapter 'General').