
WinsafI
computes onedimensional settlements, that is, settlements computed by summing
the vertical strains along a vertical profile. This is the classic method
of estimating settlements under design loads. The profile is modeled as
a set of horizontal layers. Stresses are found from either Bossinesq’s
or Westergaard’s solutions for vertical surface loads on a halfspace.
Eleven surface loading options are available: rectangular loads, circular
loads, uniform vertical strip load, uniform horizontal strip load, vertical
strip load increasing linearly across the strip, strip load with symmetrical
triangular crosssection, strip embankment load rising linearly to a level
value and remaining constant across the rest of the strip, strip symmetrical
embankment loading with equal linear rise and fall across the width of the
strip, strip loading with arbitrary crosssection, and conditions at the
end of a strip fill. The user can also specify an increment of stress throughout
the profile. In the case of rectangular or circular loads, the user can
specify up to 25 simultaneous loads.
Four methods are used to compute settlement: by the change in void ration
computed from the stress changes, by the vertical strain computed from the
stress changes, from predetermined changes in void ratio or from compression
and rebound curves, and from stress changes multiplied by the coefficient
of volume change. The values of the com 
