I'm looking for discussion on overturning for a mat footing. The site in question is south of Houston and has deep (30' investigated) saturated (H2O @ 3') clays with low strength. Torvane range 0.5 to 1.5 tsf., penetrometer range 0.75 to 2.5, UU's 0.6 to 1.8 tsf. The foundation is for a 50'...