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Bearing Capacity Chart - Delmag Diesel Pile Hammers

Delmag D16-32 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 16405 96 107 116 123 130 135 140 145 149 153 157 160 163 166 169 172 174
53 4.84 17076 99 110 119 127 133 139 144 149 153 157 161 164 168 171 173 176 179
52 5.04 17781 102 113 122 130 137 143 148 153 157 162 165 169 172 175 178 181 183
51 5.25 18522 105 116 126 134 141 147 152 157 162 166 170 173 177 180 183 186 188
50 5.47 19298 108 120 130 138 145 151 157 162 166 170 174 178 181 185 188 190 193
49 5.71 20145 112 124 133 142 149 155 161 166 171 175 179 183 186 190 193 196 198
48 5.97 21062 115 128 138 146 153 160 166 171 176 180 184 188 192 195 198 201 204
47 6.24 22015 119 131 142 150 158 165 171 176 181 185 190 193 197 200 204 207 210
46 6.52 23003 123 136 146 155 163 169 175 181 186 191 195 199 203 206 209 212 215
45 6.83 24096 127 140 151 160 168 175 181 186 192 196 201 205 208 212 215 219 222
44 7.16 25260 131 144 155 165 173 180 186 192 197 202 207 211 215 218 222 225 228
43 7.51 26495 135 149 160 170 178 185 192 198 203 208 213 217 221 225 228 232 235
42 7.88 27801 140 154 166 175 184 191 198 204 209 214 219 224 228 231 235 239 242
41 8.29 29247 145 159 171 181 190 197 204 210 216 221 226 231 235 239 242 246 249
40 8.72 30764 150 165 177 187 196 204 211 217 223 228 233 238 242 246 250 254 257
39 9.19 32422 155 170 183 193 202 210 218 224 230 236 241 245 250 254 258 262 265
38 9.70 34222 161 176 189 200 209 218 225 232 238 243 249 254 258 262 266 270 274
37 10.25 36162 166 183 196 207 217 225 233 240 246 252 257 262 267 271 275 279 283
36 10.84 38244 173 189 203 214 224 233 241 248 254 260 266 271 276 280 284 288 292
35 11.48 40501 179 196 210 222 232 241 249 256 263 269 275 280 285 290 294 298 302

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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