Bearing Capacity ChartDelmag Diesel Pile Hammers

Delmag D46-32 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	52728	423	462	494	520	544	564	583	599	615	629	641	653	665	675	685	695	704
52	5.40	54756	433	472	505	532	556	577	596	613	628	642	656	668	679	690	700	710	719
51	5.60	56784	443	483	516	544	568	589	608	626	642	656	669	682	694	705	715	725	734
50	5.80	58812	452	493	527	555	580	602	621	639	655	669	683	696	708	719	729	739	749
49	6.00	60840	462	503	538	566	592	614	633	651	668	683	696	709	721	733	744	754	763
48	6.30	63882	475	518	553	583	609	631	651	670	686	702	716	729	742	753	764	775	785
47	6.60	66924	489	533	569	599	625	648	669	688	705	721	735	749	762	773	785	795	805
46	6.80	68952	498	542	579	610	636	660	681	700	717	733	748	762	775	787	798	809	819
45	7.20	73008	515	561	598	630	658	682	703	723	741	757	772	787	800	812	824	835	846
44	7.50	76050	528	575	613	645	673	698	720	740	758	775	790	805	818	831	843	854	865
43	7.80	79092	540	588	627	660	688	714	736	757	775	792	808	823	837	850	862	873	884
42	8.20	83148	557	605	645	679	708	734	757	778	797	815	831	846	860	874	886	898	909
41	8.60	87204	572	622	663	698	728	754	778	799	819	837	854	869	883	897	910	922	934
40	9.10	92274	592	643	685	721	752	779	803	825	845	864	881	897	912	926	939	951	963
39	9.50	96330	607	659	702	739	770	798	823	845	866	885	902	918	934	948	961	974	986
38	10.00	101400	625	679	723	760	793	821	847	870	891	910	928	945	961	975	989	1002	1015
37	10.60	107484	646	702	747	756	819	849	875	899	920	940	959	976	992	1007	1021	1035	1047
36	11.20	113568	667	724	771	811	845	875	902	926	949	969	988	1006	1022	1038	1053	1066	1079
35	11.80	119652	688	746	794	835	870	901	928	954	976	997	1017	1035	1052	1068	1083	1097	1111
34	12.50	126750	711	771	820	862	898	930	959	984	1008	1030	1050	1068	1086	1102	1118	1132	1146

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