Bearing Capacity ChartDelmag Diesel Pile Hammers

Delmag D30-32 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	34372	322	354	379	401	420	436	451	465	477	488	499	508	517	526	534	542	549
52	5.40	35694	330	362	388	411	430	447	462	475	488	499	510	520	529	538	546	554	561
51	5.60	37016	338	371	397	420	439	457	472	486	499	510	521	531	541	550	558	566	573
50	5.80	38338	346	379	406	429	449	466	482	496	509	521	532	542	552	561	570	578	585
49	6.00	39660	353	387	415	438	458	476	492	507	520	532	543	553	563	572	581	589	597
48	6.30	41643	365	399	428	451	472	490	507	522	535	547	559	570	580	589	598	606	614
47	6.60	43626	376	411	440	464	486	504	521	536	550	563	574	585	596	605	614	623	631
46	6.80	44948	383	419	448	473	494	513	530	546	560	573	585	596	606	616	625	634	642
45	7.20	47592	397	434	464	489	512	531	549	564	579	592	604	616	627	637	646	655	664
44	7.50	49575	407	445	476	502	524	544	562	578	593	606	619	631	642	652	661	671	679
43	7.80	51558	417	455	487	514	537	557	575	592	607	620	633	645	656	667	677	686	695
42	8.20	54202	430	470	502	529	553	574	592	609	624	639	652	664	675	686	696	706	715
41	8.60	56846	443	483	516	544	568	590	609	626	642	656	670	682	694	705	715	725	734
40	9.10	60151	458	500	534	563	588	610	629	647	663	678	692	705	717	728	739	749	758
39	9.50	62795	471	513	548	577	603	625	645	663	680	695	709	722	735	746	757	767	777
38	10.00	66100	485	529	565	595	621	644	664	683	700	716	730	744	756	768	779	790	800
37	10.60	70066	503	548	584	615	642	666	687	706	724	740	755	769	782	794	805	816	826
36	11.20	74032	519	566	603	635	663	687	709	729	747	763	779	793	806	819	831	842	852
35	11.80	77998	536	583	622	655	683	708	730	751	769	786	802	816	830	843	855	867	877
34	12.50	82625	554	603	643	677	706	732	755	775	794	812	828	843	857	871	883	895	906

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