Often soil reports obtained from the soil engineers will read something like… "Soil capacity is 3 ksf but may be increased by 1 ksf for every foot of width greater than 4 feet". The Formula option for creating a soil table uses this type of soil information to create the table.

Selecting Create New Soil Table based on… Formula and clicking Next>> brings up the formula dialog box.

The data from the soil report is entered in the first section of the dialog box.

The table that is generated by this formula tabulates the width of the footing by the depth of the footing and the capacity at each set of dimensions. In the Increments for Generated Values section of the dialog box, the value by which each of the dimensions will be incremented is entered. Smaller incrementation values will create a larger more accurate soil definition, but may slow down design times.

The third section of this dialog box, Formula, displays the formula that was entered textually in the Bearing Pressure section of the dialog box.

Clicking the Save and Exit button will generate the table, save it to a file and return the engineer to the Assign > Soil dialog box. Once there, the table can be selected and assigned to foundations. To View or Edit the table that was generated, select the View/Edit button from the Assign > Soil dialog box.

Clicking the <<Back button return the user to the Soil Table Definition dialog box, abandoning any data entered in the Formula dialog box.

The Cancel button cancels the Soil Wizard command and returns the user to the Assign > Soil dialog box with no table having been generated.