Bearing Capacity Chart Delmag Diesel Pile Hammers

Delmag D5-43 Single Acting Diesel Pile Hammers

Bearing Capacity (tons) for a Pile Set (blows/in) of:

Blows Per Min.	Piston Stroke (ft)	Hammer Energy (ft-lbs)	2.0	2.5	3.0	3.5	4.0	4.5	5.0	5.5	6.0	6.5	7.0	7.5	8.0	8.5	9.0	9.5	10.0
54	4.65	5115	31	37	42	47	50	53	56	59	61	63	65	67	69	71	72	74	75
53	4.84	5324	33	39	44	49	52	56	58	61	64	66	68	70	72	73	75	76	78
52	5.04	5544	35	41	46	51	54	58	61	63	66	68	70	72	74	76	77	79	80
51	5.25	5775	37	43	48	53	57	60	63	66	68	71	73	75	77	78	80	82	83
50	5.47	6017	38	45	50	55	59	62	65	68	71	73	75	77	79	81	83	84	86
49	5.71	6281	40	47	52	57	61	65	68	71	73	76	78	80	82	84	86	87	89
48	5.97	6567	42	49	55	59	64	67	70	73	75	79	81	83	85	87	89	90	92
47	6.24	6864	44	51	57	62	66	70	73	76	79	81	84	86	88	90	92	93	95
46	6.52	7172	48	54	59	64	69	73	76	79	82	84	87	89	91	93	95	97	98
45	6.83	7513	49	56	62	67	72	75	79	82	86	87	90	92	94	96	98	100	102
44	7.16	7876	51	59	65	70	74	78	82	85	88	91	93	96	98	100	102	104	105
43	7.51	8261	53	61	67	73	77	81	85	88	91	94	97	99	101	103	105	107	109
42	7.88	8668	56	64	70	76	81	85	88	92	95	96	100	103	105	107	109	111	113
41	8.29	9119	59	67	73	79	84	88	92	95	99	101	104	107	109	111	113	115	117
40	8.72	9592	61	70	77	82	87	92	96	99	102	105	108	111	113	115	117	119	121
39	9.19	10109	64	73	80	86	91	95	99	103	106	109	112	115	117	120	122	124	126
38	9.70	10670	68	76	84	90	95	99	104	107	111	114	117	119	122	124	127	129	131
37	10.25	11275	71	80	87	93	99	104	108	112	115	118	121	124	127	129	132	134	136
36	10.84	11924	74	84	91	98	103	108	112	116	120	123	126	129	132	134	137	139	141
35	11.48	12628	78	87	95	102	108	113	117	121	125	128	131	134	137	140	142	144	147

Calculates bearing capacities based upon FHWA modified Gates formula:
Ru = 0.5 [ 1.75 √E ( log 10N ) - 100 ]
where
Ru = Driven bearing capacity of the pile in tons
N = Number of hammer blows per inch
E = Energy developed by the hammer per blow in ft-lbs