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Bearing Capacity Chart - Delmag 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

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