Earth Pressure

Retaining Wall

Earth pressures (static and seismic) are calculated based on the Trial Wedge method. As such, you can define any surface configuration, level, staged, single or multiple slopes, ascending slope, descending slope, and so on.

1)Seismic coefficient 
kH: horizontal seismic coefficient is usually taken as half of peak ground acceleration (PGA)
kv: vertical seismic coefficient is usually taken as half of kH 

2)Surface configuration  
Wall backfill side: each segment is defined by any two of three parameters, Slope (°), Length, and Height
Resisting side: you can define bench and/or descending slope here

3)Soil properties - soil material is divided into three zones, base soil (Mat3), native soil (Mat2) and backfill (Mat1). Each material is defined by
γ: input unit weight 
c: input cohesive strength 
ϕ: input internal frictional angle in degrees

4)Other parameters = Footing width: check it if this is your recommendation
α: input wall back surface inclination in degrees
δ: input wall-soil interface friction angle in degrees 

Shoring

(under development)