A Novel Incipient Evaluation Method for Postconstruction Settlement by Using a Statistic Approach with Time-Extended Loading Test

Table 1

Parameters of elastic rubber cushions.

Composite Subgrade Type	Elastic cushion parameters; Minimum thickness	Comments
Flexible pile	h/E = 3 to 10 [mm/MPa]; (h ≥ 20 mm)	For h = 20 mm, the range of E is 2 to 8 MPa;
Semi-rigid pile	h/E = 6 to 15 [mm/MPa]; (h ≥ 40 mm)	For h = 40 mm, the range of E is 4 to 8 MPa
Rigid pile	h/E = 9 to 20 [mm/MPa]; (h ≥ 60mm)	For h = 60 mm, the range of E is 6 to8 MPa