Plan Types
| Plan Types |
 |
| Fluting Types |
 |
| Load Bearing Capacity |
| DIAMETER |
STAVE THICKNESS |
WOOD SPECIES |
| PLAIN |
FLUTED |
PINE |
REDWOOD |
| 6″ |
2″ |
2″ |
2500 |
6,000 |
| 8″ |
2″ |
2″ |
4000 |
9,000 |
| 10″ |
2″ |
2″ |
5000 |
12,500 |
| 12″ |
2″ |
2″ |
6500 |
15,000 |
| 14″ |
2″ |
2″ |
11,000 |
17,000 |
| 16″ |
2″ |
2″ |
12,000 |
21,000 |
| 18″ |
2″ |
2″ |
14,000 |
24,500 |
| 20″ |
2″ |
2″ |
16,500 |
28,000 |
| 22″ |
2″ |
3″ |
18,000 |
32,000 |
| 24″ |
2″ |
3″ |
20,000 |
34,000 |
| 26″ |
3″ |
3″ |
22,000 |
39,500 |
| 28″ |
3″ |
3″ |
24,000 |
43,500 |
| 30″ |
3″ |
3″ |
25,500 |
47,500 |
| 32″ |
3″ |
3″ |
25,500 |
47,500 |
| 34″ |
3″ |
3″ |
25,500 |
47,500 |
| 36″ |
3″ |
3″ |
25,500 |
47,500 |
Load applied concentrically through axis of column. Loads valid only if uniform contact between full area of column ends and cap and base units. Loads are provided as a convenience and are not an exact value. Consult a structural engineer for accurate load estimates. Shaft thickness may vary for interior columns.