Characteristics of Gravelly Granite Residual Soil in Bored Pile Design: An In Situ Test in Shenzhen

Table 5

Unit base resistance (kPa).

Pile	TP-1	TP-2	TP-3	TP-4	TP-5	TP-6
qb,max	1268	2022	3018	1210	1736	2607
qb,crit	772	1368	1364	1052	813	1980
qbu,e	2972	3865	5536	3428	4806	6101

q_b,max: the maximum measured unit base resistance; q_b,crit: the interpreted critical failure resistance at a pile head settlement of 40 mm; q_bu,e: the estimated ultimate unit base resistance based on Chin’s method.