Site conditions parameters
•Same as initial: Select this option if the final site conditions (conditions during earthquake) are the same as the initial conditions (when CPT was performed), i.e. no fill or excavation.
•Has a fill: Select this option if the final site conditions where changed by applying a fill. The Height of fill input box holds the value of the height of fill and the Fill unit weight input box should hold the unit weight of the material used to construct the fill. These two parameters will be used to calculate the geostatic stresses during earthquake.
•Is excavated: Select this option if there will be an excavation before the earthquake. CLiq will not perform CSR calculations from depth 0.00 down to the value entered at the Depth field while CRR will be given a large value of 4.00. The Width field is the width of the foundation (foundation is assumed to be of a rectangular shape) and the L/B input box hold the value of the length to width ratio of the footing (e.g. a value of 1.00 means the footing is square and a value of 10 means that the footing is strip). Calculations of the load stresses distribution below the footing are performed based on the Boussinesq theory for a point under the middle of the footing. If the Rigid footing is checked the formula for a rigid footing will be used. Note the GWL (earthquake) must also be adjusted to reflect the added fill.