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Bearing Capacity Chart - Delmag 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

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