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Bearing Capacity Chart - Delmag 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

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