5. What was the initial calculated Factor of Safety for the St Francis Dam was the revised Factor of Safety value after hydrostatic uplift forces were included in the estimate? The initial calculated factor of safety was 4, however upon investigation, it was determined that the design of the dam actually had a factor of safety of 1. 6. What other significant dam project was strongly affected, on the national level, just before construction in the 1930's, by the St Francis Dam failure and where was that eventually built? After the failure of the St. Francis Dam, design redundancies were implemented for the Hoover Dam which is located on the border of Nevada and Arizona at the Colorado River