Model	Site	Soil Type	WC	Z	Unit weight	Effective stress	LL	PI	Pred. USS	Actual USS	% Diff.
USS = 29.230 − 0.205WC + 0.043σ_v (Model 4)	Cawthrone	MH or OH	252.00	4.5	12.25	55.13	273	156	−20.06	12.00	−267.2
	Cawthrone	CH	69.00	12.8	16.42	209.36	52	29	24.09	25.00	−3.65
	Cawthrone	CH	23.00	18.0	19.60	352.80	64	46	39.69	39.00	1.76
	Chanomi	CH	32.00	22.5	18.09	407.03	110	84	40.17	51.00	−21.23
$\begin{matrix} USS \\ = 66.49 - 1.10 W C \\ + 0.070 σ_{v} \\ + 0.0049 W C^{2} \\ - 0.00007 σ_{v}^{2} \end{matrix}$ (Model 5)	Cawthrone	MH or OH	252.00	4.5	12.25	55.13	273	156	104.10	12.00	767.5
	Cawthrone	CH	69.00	12.8	16.42	209.36	52	29	25.51	25.00	2.04
	Cawthrone	CH	23.00	18.0	19.60	352.80	64	46	59.77	39.00	53.26
	Chanomi	CH	32.00	22.5	18.09	407.03	110	84	53.20	51.00	4.31
USS = 31.39 − 0.098WC − 0.341LL + 0.33PI + 0.050σ_v (Model 6)	Cawthrone	MH or OH	252.00	4.5	12.25	55.13	273	156	−32.16	12.00	−368.0
	Cawthrone	CH	69.00	12.8	16.42	209.36	52	29	26.98	25.00	7.91
	Cawthrone	CH	23.00	18.0	19.60	352.80	64	46	40.13	39.00	2.91
	Chanomi	CH	32.00	22.5	18.09	407.03	110	84	38.82	51.00	−23.89
USS = 203.728 $W C^{- 0.487}$ $L L^{- 1.584}$ $P I^{1.208}$ $σ_{v}^{0.410}$ (Model 7)	Cawthrone	MH or OH	252.00	4.5	12.25	55.13	273	156	4.40	12.00	−63.29
	Cawthrone	CH	69.00	12.8	16.42	209.36	52	29	25.95	25.00	3.82
	Cawthrone	CH	23.00	18.0	19.60	352.80	64	46	68.86	39.00	76.58
	Chanomi	CH	32.00	22.5	18.09	407.03	110	84	54.57	51.00	7.00
USS=175.80 $W C^{- 0.83}$ $σ_{v}^{0.286}$ (Model 8)	Cawthrone	MH or OH	252.00	4.5	12.25	55.13	273	156	5.53	12.00	−53.92
	Cawthrone	CH	69.00	12.8	16.42	209.36	52	29	23.85	25.00	−4.59
	Cawthrone	CH	23.00	18.0	19.60	352.80	64	46	69.07	39.00	77.10
	Chanomi	CH	32.00	22.5	18.09	407.03	110	84	54.65	51.00	7.15