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Bearing Capacity Chart - Delmag Diesel Pile Hammers

Delmag D46-32 Single Acting Diesel Pile Hammer

Blows	Piston	Hammer	Bearing Capacity ( tons ) for a Pile Set ( blows / in ) of:
Per Min.	Stroke (ft)	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	47165	197	216	231	243	254	264	273	281	288	295	301	306	312	317	321	326	330
53	4.84	49092	202	221	236	249	261	271	279	287	295	301	308	314	319	324	329	333	338
52	5.04	51121	207	227	242	255	267	277	286	294	302	309	315	321	327	332	337	341	346
51	5.25	53251	213	232	248	262	273	284	293	301	309	316	323	329	334	340	345	349	354
50	5.47	55482	218	238	254	268	280	291	300	309	316	324	330	336	342	348	353	358	362
49	5.71	57917	224	244	261	275	287	298	308	316	324	332	339	345	351	356	362	366	371
48	5.97	60554	230	251	268	282	295	306	316	325	333	340	347	354	360	365	371	376	381
47	6.24	63292	236	258	275	290	303	314	324	333	341	349	356	363	369	375	380	385	390
46	6.52	66132	243	265	282	297	310	322	332	342	350	358	365	372	378	384	390	395	400
45	6.83	69277	250	272	290	306	319	331	341	351	360	368	375	382	388	394	400	405	411
44	7.16	72624	257	280	298	314	328	340	351	360	369	377	385	392	399	405	411	416	422
43	7.51	76174	264	288	307	323	337	349	360	370	379	388	396	403	410	416	422	428	433
42	7.88	79927	272	296	315	332	346	359	370	381	390	398	406	414	421	427	433	439	445
41	8.29	84085	280	305	325	342	356	369	381	392	401	410	418	426	433	440	446	452	457
40	8.72	88447	289	314	334	352	367	380	392	403	413	422	430	438	445	452	459	465	470
39	9.19	93214	298	323	345	362	378	392	404	415	425	434	443	451	458	465	472	478	484
38	9.70	98387	307	334	355	374	390	404	416	428	438	448	456	465	472	480	486	493	499
37	10.25	103966	317	344	367	386	402	416	429	441	452	461	471	479	487	494	501	508	514
36	10.84	109950	327	356	379	398	415	430	443	455	466	476	485	494	502	510	517	524	530
35	11.48	116442	338	367	391	411	428	444	457	470	481	491	501	510	518	526	533	541	547

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-lb