Lateral Soil

Lateral soil input is defined in order to calculate PY curves necessary for the lateral load-displacement response. It is defined in a series of layers in the PY input table as shown below. The soil properties which require definition depend upon the lateral method specified for a particular layer. It is possible to specify properties which are not used for the current lateral method.

It is always necessary to specify the bottom depth of a layer, a unit weight and type. The top depth is filled in automatically. The method specifies the type of PY curve that will be used for that particular layer and is entered by selecting an option from the drop down menu.

Once the type of method has been selected various cells will then be highlighted in yellow and it is necessary to fill these in. In addition some other lateral parameters may be highlighted and these should also be filled in.


An example of the lateral soil input table (from Worked Example 5)