Table 2 – Design Factors Design Condition Applicable slopes Minimum FOS Calculated FOS End of Construction Up stream 1.3 1.9 End of Construction Down stream 1.3 1.69 Rapid draw down from FSL Up stream 1.2 1.62 Steady Seepage at FSL Downstream 1.5 1.65 Earthquake Up stream 1.0 1.31 Earthquake Down stream 1.0