| STEPS IN PILE SELECTION | |
| 1. | Determine applied loads on pile: dead load, live load & safety factors. |
| 2. | Determine site specific soils information: soil type, soil description, soil classification, water table levels and depth of frost penetration. |
| 3. | Compare soils information with pile load and location information. Pile spacing - is there a group effect among piles? |
| 4. | Design Pile - pile geometry... Select: pile shaft, helix diameter and thickness, number of helixes, embedment depth, extension required? Bolt-on or welded? |
| 5. | Estimate installation torque. |
| 6. | Evaluate Design - Practical? Can designed pile be installed? Do soil conditions allow for installing? Equipment/Power? Possibly repeat Step 4. |
| 7. | Calculate ultimate pile capacity and apply safety factors (Minimum S.F. = 2.0). |
| The steps are to be used as a guide in the pile design process, other factors may come into play when designing a screw pile (ie. seismic considerations, soil chemistry, etc.) | |
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