Delmag D25-32 Single Acting Diesel Pile Hammer
Blows | Piston | Hammer | Bearing Capacity ( tons ) for a Pile Set ( blows / in ) of: | ||||||||||||||||
Per Min. | Stroke (ft) | 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 | 25635 | 132 | 146 | 157 | 166 | 174 | 182 | 188 | 194 | 199 | 204 | 208 | 213 | 217 | 220 | 224 | 227 | 230 |
53 | 4.84 | 26683 | 136 | 150 | 161 | 171 | 179 | 186 | 193 | 199 | 204 | 209 | 214 | 218 | 222 | 226 | 229 | 233 | 236 |
52 | 5.04 | 27786 | 140 | 154 | 165 | 175 | 184 | 191 | 198 | 204 | 209 | 214 | 219 | 223 | 228 | 231 | 235 | 238 | 242 |
51 | 5.25 | 28943 | 144 | 158 | 170 | 180 | 188 | 196 | 203 | 209 | 215 | 220 | 225 | 229 | 233 | 237 | 241 | 244 | 248 |
50 | 5.47 | 30156 | 148 | 162 | 174 | 185 | 193 | 201 | 208 | 214 | 220 | 225 | 230 | 235 | 239 | 243 | 247 | 251 | 254 |
49 | 5.71 | 31479 | 152 | 167 | 179 | 190 | 199 | 207 | 214 | 220 | 226 | 231 | 236 | 241 | 245 | 250 | 253 | 257 | 260 |
48 | 5.97 | 32913 | 157 | 172 | 184 | 195 | 204 | 212 | 220 | 226 | 232 | 238 | 243 | 248 | 252 | 256 | 260 | 264 | 267 |
47 | 6.24 | 34401 | 161 | 177 | 190 | 201 | 210 | 218 | 226 | 232 | 239 | 244 | 249 | 254 | 259 | 263 | 267 | 271 | 275 |
46 | 6.52 | 35945 | 166 | 182 | 195 | 206 | 216 | 224 | 232 | 239 | 245 | 251 | 256 | 261 | 266 | 270 | 274 | 278 | 282 |
45 | 6.83 | 37654 | 171 | 187 | 201 | 212 | 222 | 231 | 238 | 245 | 252 | 258 | 263 | 268 | 273 | 278 | 282 | 286 | 290 |
44 | 7.16 | 39473 | 176 | 193 | 207 | 218 | 229 | 237 | 245 | 253 | 259 | 265 | 271 | 276 | 281 | 285 | 290 | 294 | 298 |
43 | 7.51 | 41403 | 182 | 199 | 213 | 225 | 235 | 244 | 252 | 260 | 267 | 273 | 279 | 284 | 289 | 294 | 298 | 302 | 306 |
42 | 7.88 | 43442 | 187 | 205 | 219 | 232 | 242 | 252 | 260 | 267 | 274 | 281 | 286 | 292 | 297 | 302 | 306 | 311 | 315 |
41 | 8.29 | 45703 | 193 | 211 | 226 | 239 | 250 | 259 | 268 | 276 | 283 | 289 | 295 | 301 | 306 | 311 | 316 | 320 | 324 |
40 | 8.72 | 48073 | 200 | 218 | 233 | 246 | 257 | 267 | 276 | 284 | 291 | 298 | 304 | 310 | 315 | 320 | 325 | 329 | 334 |
39 | 9.19 | 50664 | 206 | 225 | 241 | 254 | 266 | 276 | 285 | 293 | 300 | 307 | 313 | 319 | 325 | 330 | 335 | 340 | 344 |
38 | 9.70 | 53476 | 213 | 233 | 249 | 262 | 274 | 285 | 294 | 302 | 310 | 317 | 323 | 329 | 335 | 340 | 345 | 350 | 355 |
37 | 10.25 | 56508 | 221 | 241 | 257 | 271 | 283 | 294 | 303 | 312 | 320 | 327 | 334 | 340 | 346 | 351 | 356 | 361 | 366 |
36 | 10.84 | 59761 | 228 | 249 | 266 | 280 | 293 | 304 | 313 | 322 | 330 | 338 | 345 | 351 | 357 | 363 | 368 | 373 | 378 |
35 | 11.48 | 63289 | 236 | 258 | 275 | 290 | 303 | 314 | 324 | 333 | 341 | 349 | 356 | 363 | 369 | 375 | 380 | 385 | 390 |
| 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 |