Pier Data Sheets
| For Helix Plates Welded to 1-1/2″ Square Shafts: | ||
| Helix Thickness | Helix Diameter | Minimun (Ultimate) Compressive Load |
| 3/8″ | 8″ | 35,000lbs |
| 1/2″ | 8″ | 55,000lbs |
| 3/8″ | 10″ | 20,000lbs |
| 1/2″ | 10″ | 50,000lbs |
| 3/8″ | 12″ | 20,000lbs |
| 1/2″ | 12″ | 49,800lbs |
| 3/8″ | 14″ | 20,000lbs |
| 1/2″ | 14″ | 42,250lbs |
| For Helix Plates Welded to 1-3/4″ Square Shafts: | ||
| Helix Thickness | Helix Diameter | Minimun (Ultimate) Compressive Load |
| 3/8″ | 8″ | 35,000lbs |
| 1/2″ | 8″ | 70,000lbs |
| 3/8″ | 10″ | 30,000lbs |
| 1/2″ | 10″ | 65,000lbs |
| 3/8″ | 12″ | 27,500lbs |
| 1/2″ | 12″ | 55,000lbs |
| 3/8″ | 14″ | 22,500lbs |
| 1/2″ | 14″ | 50,000lbs |
