Table 11: Summarized data required for constructing lower bound and upper bound of RS-FEM for Basic condition.

Basic variables: Cohesion of 1st layer (kPa), Cohesion of 2nd layer (kPa), Cohesion of 3rd layer (kPa), Friction angle of 3rd layer (°)
Set Number	Probability of Happening	Cumulative Probability	Factor of Safety		Coordinate
			Lower bound	Upper Bound	Lower Bound	Upper Bound
1	0.0625	0.0625	1.012	1.506	(1.012,0.0625)	(1.506,0.0625)
2	0.0625	0.125	1.012	1.507	(1.012,0.125)	(1.507,0.125)
3	0.0625	0.1875	1.039	1.529	(1.039,0.1875)	(1.529,0.1875)
4	0.0625	0.25	1.039	1.53	(1.039, 0.25)	(1.53, 0.25)
5	0.0625	0.3125	1.042	1.545	(1.042,0.3125)	(1.545,0.3125)
6	0.0625	0.375	1.046	1.546	(1.046,0.375)	(1.546,0.375)
7	0.0625	0.4375	1.071	1.552	(1.071,0.4375)	(1.552,0.4375)
8	0.0625	0.5	1.075	1.553	(1.075,0.5)	(1.553,0.5)
9	0.0625	0.5625	1.075	1.563	(1.075,0.5625)	(1.563,0.5625)
10	0.0625	0.625	1.076	1.564	(1.076,0.625)	(1.564,0.625)
11	0.0625	0.6875	1.098	1.574	(1.098,0.6875)	(1.574,0.6875)
12	0.0625	0.75	1.102	1.575	(1.102,0.75)	(1.575,0.75)
13	0.0625	0.8125	1.103	1.587	(1.103,0.8125)	(1.587,0.8125)
14	0.0625	0.875	1.105	1.588	(1.105,0.875)	(1.588,0.875)
15	0.0625	0.9375	1.13	1.605	(1.13,0.9375)	(1.605,0.9375)
16	0.0625	1	1.13	1.608	(1.13,1)	(1.608,1)