Bearing Capacity ChartDelmag Diesel Pile Hammers

Delmag D16-32 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	18356	208	231	250	266	280	292	303	313	322	330	337	345	351	357	363	369	374
52	5.40	19062	214	238	257	273	287	299	310	320	330	338	346	353	360	366	372	378	383
51	5.60	19768	220	244	263	280	294	307	318	328	338	346	354	361	368	375	381	387	392
50	5.80	20474	226	250	270	287	301	314	325	336	345	354	362	370	377	383	389	395	401
49	6.00	21180	231	256	276	293	308	321	333	343	353	362	370	378	385	391	398	404	409
48	6.30	22239	240	265	285	303	318	331	343	354	364	373	382	389	397	404	410	416	422
47	6.60	23298	248	273	295	312	328	342	354	365	375	384	393	401	408	415	422	428	434
46	6.80	24004	253	279	300	319	334	348	361	372	382	392	400	408	416	423	430	436	442
45	7.20	25416	263	290	312	331	347	361	374	386	396	406	415	423	431	438	445	452	458
44	7.50	26475	270	298	321	340	356	371	384	396	406	416	425	434	442	449	456	463	469
43	7.80	27534	278	306	329	348	365	380	393	405	416	426	436	444	453	460	467	474	481
42	8.20	28946	287	316	340	360	377	392	406	418	429	440	449	458	467	474	482	489	495
41	8.60	30358	297	326	350	371	388	404	418	431	442	453	463	472	480	488	496	503	510
40	9.10	32123	308	338	363	384	402	419	433	446	458	469	479	488	497	505	513	520	527
39	9.50	33535	317	348	373	395	413	430	444	458	470	481	491	501	510	518	526	534	541
38	10.00	35300	328	360	386	408	427	444	459	472	485	496	507	517	526	534	543	550	558
37	10.60	37418	340	373	400	423	442	460	475	489	502	514	525	535	544	553	562	569	577
36	11.20	39536	353	386	414	437	457	475	491	506	519	531	542	552	562	571	580	588	596
35	11.80	41654	365	399	428	451	472	490	507	552	535	548	559	570	580	589	598	606	614
34	12.50	44125	378	414	443	468	489	508	525	540	554	566	578	589	600	609	618	627	635

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-lb