It is an AutoCAD add-on for the calculation of the earth push at walls, that is part of the RROAD software package, for the designing of roads and bridges.

Input data:

1) a DWG file that contains: the line of the transverse profile of the terrain, the overload line and the support line,
2) inner friction angles and for the friction on the back of the wall, the typical weight of the soil.

Output data:

– 2 drawings that contain the representation and angle of the slippage plane (calculated through the Coulomb method), the weight and the center of gravity of the mass of soil that slips, the push and the maximum moment of the soil.