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Bearing Capacity Chart - Delmag Diesel Pile Hammers

Delmag D36-32 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 36912 169 185 198 210 219 228 236 243 249 255 260 265 270 274 279 282 286
53 4.84 38420 173 190 203 215 225 234 241 248 255 261 266 272 276 281 285 289 293
52 5.04 40008 178 195 209 220 230 239 247 255 261 267 273 278 283 288 292 296 300
51 5.25 41675 182 200 214 226 236 245 253 261 268 274 280 285 290 295 299 303 307
50 5.47 43421 187 205 219 232 242 251 260 267 274 281 286 292 297 302 306 311 315
49 5.71 45326 192 210 225 238 248 258 266 274 281 288 294 299 305 309 314 318 323
48 5.97 47390 198 216 231 244 255 265 274 282 289 295 301 307 313 318 322 327 331
47 6.24 49533 203 222 238 251 262 272 281 289 296 303 309 315 321 326 331 335 339
46 6.52 51756 209 228 244 257 269 279 288 296 304 311 317 323 329 334 339 344 348
45 6.83 54217 215 235 251 265 276 287 296 305 312 319 326 332 338 343 348 353 357
44 7.16 56836 221 242 258 272 284 295 304 313 321 328 335 341 347 352 358 363 367
43 7.51 59614 228 249 266 280 292 303 313 322 330 337 344 351 357 362 368 373 377
42 7.88 62551 235 256 273 288 301 312 322 331 339 347 354 360 366 372 378 383 388
41 8.29 65806 242 264 282 297 310 321 331 341 349 357 364 371 377 383 389 394 399
40 8.72 69219 250 272 290 305 319 331 341 351 359 367 375 382 388 394 400 405 410
39 9.19 72950 257 280 299 315 329 341 352 361 370 378 386 393 400 406 412 417 423
38 9.70 76999 266 289 309 325 339 351 363 373 382 390 398 405 412 418 424 430 436
37 10.25 81365 275 299 319 335 350 363 374 384 394 402 411 418 425 432 438 444 449
36 10.84 86048 284 309 329 346 361 374 386 397 406 415 424 431 438 445 452 458 463
35 11.48 91128 294 319 340 358 373 387 399 410 420 429 437 445 453 460 466 472 478

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-lbs

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