Mathematical Modeling of Local Scour at Slender and Wide Bridge Piers

Table 3

Relative errors of equilibrium local scour prediction equations, RE%.

Measurement	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
31	40	68	40	41	34	−57	14	71	18	71	6
33	29	24	12	−15	13	−63	0	50	−7	54	−14
40	69	−26	−11	48	10	−40	35	78	−29	−15	−25
164	310	278	246	305	336	79	284	391	184	203	173
223	86	148	95	94	87	−43	77	155	2	112	1
252	84	33	35	25	44	−43	31	73	41	43	22
43	71	18	20	63	57	−33	58	96	4	4	4
140	42	0	3	13	52	−41	15	35	14	−29	0
141	65	4	11	32	65	−33	33	59	16	−12	5
142	59	1	7	44	45	−39	33	74	−15	−8	−18
153	88	72	58	84	100	−18	98	123	64	46	57
155	86	57	48	92	82	−23	100	136	29	43	30
157	0	4	−9	−2	14	−54	7	18	3	−16	−5
158	37	40	24	32	57	−37	46	59	43	13	32
159	−14	−11	−22	−13	−6	−62	−6	7	−23	−26	−26
160	18	22	7	20	29	−48	29	47	6	2	1
161	78	58	47	74	87	−23	75	111	34	21	29
162	101	79	66	97	111	−13	98	138	51	36	46
163	132	117	97	131	146	1	131	181	75	64	69
165	74	48	38	79	70	−28	74	121	7	20	8
166	93	63	53	98	88	−21	93	144	18	32	19
167	76	75	56	71	96	−20	75	106	53	27	43
168	63	64	46	60	82	−26	63	93	41	19	32
169	41	49	30	39	60	−36	43	69	26	8	17
170	51	58	38	48	72	−31	52	79	37	13	27
171	32	37	20	35	44	−41	35	66	4	2	0
172	100	108	82	105	118	−11	105	151	59	55	52
196	120	44	48	125	85	−18	97	177	−10	42	−6
197	128	46	50	142	79	−19	110	209	−22	50	−15
198	205	70	84	226	120	2	180	326	−16	92	−6
208	59	13	15	30	64	−37	28	56	19	3	6
209	83	32	34	47	93	−26	47	77	45	18	27
210	75	−6	6	47	42	−38	36	77	−9	7	−13
211	47	−22	−12	30	13	−49	16	56	−32	−8	−33
213	77	41	38	45	95	−27	46	74	50	19	29
214	94	39	42	57	103	−22	56	88	51	25	33
215	84	9	19	57	63	−32	46	88	4	16	−1
216	75	−1	9	57	41	−38	40	88	−16	12	−17
217	137	83	80	114	144	−5	129	158	89	74	74