It is used to build concrete round columns from diameter 30 cm to 70 cm.
They are a metallic formworks that can be recuperated once formed the column
| Dimetro/Altura cm. | 50 | 100 | 150 | 200 | 300 | 450 |
| 30 | 36,18 | 57,11 | 0,00 | 104,40 | 163,20 | 249,00 |
| 35 | 38,26 | 60,13 | 92,30 | 108,00 | 170,40 | |
| 40 | 39,88 | 63,14 | 9,98 | 111,00 | 177,60 | |
| 45 | 42,79 | 69,60 | 124,20 | 189,60 | ||
| 50 | 44,78 | 75,34 | 111,45 | 133,80 | 196,20 | |
| 55 | 51,08 | 80,27 | 144,00 | 213,00 | ||
| 60 | 56,98 | 85,21 | 156,00 | 229,20 | ||
| 65 | 60,78 | 90,60 | 168,00 | 246,00 | ||
| 70 | 62,84 | 94,46 | 180,60 | 276,00 |
