Table 8. Comparing the predicted embankment settlements with the measured data.

Pile spacing (m)	GR	Stiffness (kN/m)	Predicted settlement (mm)	Measured settlement (mm)
1.8	2-layer geogrid	160	72	66
1.6	2-layer geogrid	160	64	58
1.4	1-layer geogrid	80	67	59
1.4	1-layer geocell	120	60	54