| Manhole Ring Nominal Diameter (mm) | Panel Combination for Nominal 150mm Concrete Surround | Concrete Volume (m³) | |||
|---|---|---|---|---|---|
| A | B | C | 1800H | ||
| 675 | 1 | 3 | 0 | 0.78 | |
| 900 | 2 | 1 | 2 | 1.06 | |
| 1050 | 3 | 0 | 1 | 1.28 | |
| 1200 | 3 | 1 | 1 | 1.56 | |
| 1350 | 3 | 2 | 0 | 1.38 | |
| 1500 | 4 | 0 | 1 | 1.60 | |
| 1800 | 4 | 2 | 0 | 1.94 | |
| 2100 | 3 | 5 | 2 | 2.26 | |
| 2400 | 6 | 0 | 1 | 2.63 | |
| 2700 | 6 | 2 | 0 | 2.56 | |
