Spring angle in RAM concept

An area spring has an orientation. The default is 0 degrees, so the R axis runs left to right and the S axis runs north to south on screen. The spring then has an R and S axis resistance that relate to the area spring local axis. Most soils are linear in the two directions, so I seldom see anything but 0 angle area springs with equal R and S resistance. 

An area spring has an orientation. The default is 0 degrees, so the R axis runs left to right and the S axis runs north to south on screen. The spring then has an R and S axis resistance that relate to the area spring local axis. Most soils are linear in the two directions, so I seldom see anything but 0 angle area springs with equal R and S resistance.