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Bearing Capacity Chart - Delmag Diesel Pile Hammers

Delmag D46-32 Single Acting Diesel Pile Hammer
Bearing Capacity (tons) 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
54 4.65 47165 197 216 231 243 254 264 273 281 288 295 301 306 312 317 321 326 330
53 4.84 49092 202 221 236 249 261 271 279 287 295 301 308 314 319 324 329 333 338
52 5.04 51121 207 227 242 255 267 277 286 294 302 309 315 321 327 332 337 341 346
51 5.25 53251 213 232 248 262 273 284 293 301 309 316 323 329 334 340 345 349 354
50 5.47 55482 218 238 254 268 280 291 300 309 316 324 330 336 342 348 353 358 362
49 5.71 57917 224 244 261 275 287 298 308 316 324 332 339 345 351 356 362 366 371
48 5.97 60554 230 251 268 282 295 306 316 325 333 340 347 354 360 365 371 376 381
47 6.24 63292 236 258 275 290 303 314 324 333 341 349 356 363 369 375 380 385 390
46 6.52 66132 243 265 282 297 310 322 332 342 350 358 365 372 378 384 390 395 400
45 6.83 69277 250 272 290 306 319 331 341 351 360 368 375 382 388 394 400 405 411
44 7.16 72624 257 280 298 314 328 340 351 360 369 377 385 392 399 405 411 416 422
43 7.51 76174 264 288 307 323 337 349 360 370 379 388 396 403 410 416 422 428 433
42 7.88 79927 272 296 315 332 346 359 370 381 390 398 406 414 421 427 433 439 445
41 8.29 84085 280 305 325 342 356 369 381 392 401 410 418 426 433 440 446 452 457
40 8.72 88447 289 314 334 352 367 380 392 403 413 422 430 438 445 452 459 465 470
39 9.19 93214 298 323 345 362 378 392 404 415 425 434 443 451 458 465 472 478 484
38 9.70 98387 307 334 355 374 390 404 416 428 438 448 456 465 472 480 486 493 499
37 10.25 103966 317 344 367 386 402 416 429 441 452 461 471 479 487 494 501 508 514
36 10.84 109950 327 356 379 398 415 430 443 455 466 476 485 494 502 510 517 524 530
35 11.48 116442 338 367 391 411 428 444 457 470 481 491 501 510 518 526 533 541 547

Calculates bearing capacities based upon FHWA modified Gates formula:
Ru = 0.5 [ 1.75 √E ( log 10N ) - 100 ]
where
Ru = Driven bearing capacity of the pile in tons
N = Number of hammer blows per inch
E = Energy developed by the hammer per blow in ft-lb

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