Factor of Safety Assumptions
		§ Soil cohesion, T/R, wsr, and the internal friction angle were constants throughout the study area • C = 0.25 • T/R = 0.00033 or 1/3000 • Wsr = 0.5 • f  =  38° § Slope and topographic index parameter values varied according to local and upslope topography l FS values less than 0.5 indicate a slope that is more likely to fail l FS values in excess of 0.5 indicate slopes that are less likely to fail