Optimum Design of Pile Foundation by Automatic Grouping Genetic Algorithms

Table 5

Summary of soil properties under the raft.

Layer	1	2	3	4	5
Soil	Clay-a	Clay-b	Rock-a	Rock-b	Rock-c
Thickness (m)	3.8	8.4	12.2	33.3	7.3
Weight (kN/m^3)	18.8	18.6	19.5	20.5	23.5
Capacity (kPa)	250	280	400	700	3000
𝐸𝑠 (MPa)	6.5	15	30	70	—
𝑓𝑠 (kPa)	60	70	90	120	800
𝑓𝑏 (kPa)	500	1200	1500	4000	10000