s_u-Based Shaft Friction Design Method and Evaluation for Pipe Pile

Table 1

Method uncertainties for piles in clay [13].

Methods	No. of samples	Qc/Qm (arithmetic functions)			Qc/Qm (geometric functions)
		μ	σ	CoV	μgw	σgw	CoVgw
API-00	23	0.73	0.29	0.40	0.68	1.47	0.47
Fugro-96	23	0.86	0.24	0.28	0.83	1.32	0.32
NGI-05	47	0.97	0.36	0.37	0.91	1.43	0.43