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Pressure Determination

The "Pressure Determination" frame is used to specify the earth pressures acting on the wall.

The type of pressure acting on the wall can be specified as active, at rest or increased active - according to the allowable wall deformation. It is also possible to define minimum dimensioning pressure, which is required by many standards.

The increased active pressure is calculated using k coefficient.

Input of increased active pressure

The magnitude of the pressure is calculated by the formula:




pressure at rest



active earth pressure



coefficient of increased active pressure

If the value of coefficient k=1, then the acting pressure is equal to the pressure at rest. If the value of coefficient k=0, then the acting pressure is equal to the active pressure.

Upper bar with buttons determines whether the calculated earth pressure is redistributed.

Option 1 is used for non-anchored walls () - there is no redistribution of pressure.

For anchored and strutted walls it is appropriate to use a redistribution of earth pressures. Additional options (buttons) are for various possibilities of pressure redistribution.

The last option () allows to input any distribution of final earth pressure manually - this pressure does not depend on input geological profile.

The program allows to enter a position of null point, but it is recommended to let it calculate automatically.

Frame "Pressure determination"