Bearing Capacity ChartDelmag Diesel Pile Hammers

Delmag D19-42 Single Acting Diesel Pile Hammer

Bearing Capacity (kips) 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
53	5.20	20852	229	253	273	290	305	318	329	340	349	358	366	374	381	388	394	400	405
52	5.40	21654	235	260	280	298	313	326	338	348	358	367	375	383	390	397	403	409	415
51	5.60	22456	241	267	287	305	320	334	346	356	366	375	384	392	399	406	412	419	424
50	5.80	23258	247	273	294	312	328	341	353	364	375	384	392	400	408	415	422	428	434
49	6.00	24060	253	279	301	319	335	349	361	372	383	392	401	409	417	424	430	437	443
48	6.30	25263	262	289	311	329	346	360	373	384	395	404	413	422	429	437	444	450	456
47	6.60	26466	270	298	321	340	356	371	384	395	406	416	425	434	442	449	456	463	469
46	6.80	27268	276	304	327	346	363	378	391	403	414	424	433	442	450	458	465	472	478
45	7.20	28872	287	316	339	359	376	392	405	418	429	439	449	458	466	474	481	488	495
44	7.50	30075	295	324	348	369	386	402	416	428	440	450	460	469	478	486	493	500	507
43	7.80	31278	303	333	357	378	396	412	426	439	450	461	471	480	489	497	505	512	519
42	8.20	32882	313	344	369	390	408	425	439	452	464	475	486	495	504	514	520	528	535
41	8.60	34486	323	354	380	402	421	437	452	466	478	489	500	509	518	527	535	543	550
40	9.10	36491	335	367	394	416	436	453	468	482	494	506	517	527	536	545	553	561	569
39	9.50	38095	344	377	405	427	447	465	480	494	507	519	530	540	550	559	567	576	583
38	10.00	40100	356	390	418	441	461	479	495	510	523	535	547	557	567	576	585	593	601
37	10.60	42506	369	404	433	457	478	496	513	528	542	554	566	577	587	596	605	614	622
36	11.20	44912	383	418	448	473	494	513	530	545	559	572	584	595	606	616	625	633	642
35	11.80	47318	395	432	462	488	510	529	547	563	577	590	602	614	624	634	644	653	661
34	12.50	50125	410	448	479	505	528	548	566	582	597	610	623	635	646	656	666	675	684

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