Mathematical Modeling of Local Scour at Slender and Wide Bridge Piers

Table 4

Absolute and normalized errors for equilibrium local scour prediction equations.

Error type%	Neill [14]	Shen et al. [15]	CSU [16]	Breusers et al. [17]	Jain and Fischer [18]	Froehlich [19]; no safety	Froehlich [19]; with safety	Melville [20]	Hafez [10]	Sheppard/Melville [21]	Present study
AARE% (total)	80.1	50.4	42.4	70.2	75.5	32.7	65.2	107.8	32.5	34.8	26.1
AARE% (under)	0.4	1.7	1.4	0.8	0.2	30.6	0.2	0.0	4.6	2.9	4.6
SSE% (total)	56.9	24.9	17.5	48.0	54.8	14.5	42.0	105.7	12.3	11.4	8.7
SSE% (under)	0.2	0.3	0.5	0.1	0.0	14.2	0.0	0.0	1.1	1.4	1.2
SSEn% (total)	50.1	22.1	14.4	35.7	46.5	16.2	30.9	83.7	10.9	12.1	7.1
SSEn% (under)	0.1	0.5	0.4	0.2	0.0	15.9	0.0	0.0	1.3	1.1	1.4