| Opening Dimension | |||
| Grate Type | Grate Slope | a | b |
| B | 2H:1V | 670 | 52 |
| B | 3H:1V | 632 | 71 |
| B | 4H:1V | 618 | 78 |
| B | Horizontal | 600 | 87 |
| Opening Dimension | ||||
| Grate Type | Grate Slope | a | b | c |
| C | 2H:1V | 1341 | 66 | 1473 |
| C | 3H:1V | 1265 | 104 | 1473 |
| C | 4H:1V | 1237 | 118 | 1473 |
| B | 6H:1V | 1216 | 65 | 1346 |
| B | Horizontal | 1200 | 73 | 1346 |
| Standard Bottom Heights (mm) | |
| A | 1219 |
| B | 1372 |
| C | 1524 |
| D | 1676 |
| E | 1829 |
| F | 1981 |
| Standard Top Heights (mm) | |
| A | 152 |
| B | 305 |
| C | 762 |
| D | 914 |
Details
- Manufactured in accordance with OPSD 705.040.
- Riser sections are available in heights of .305 to 1.219m in 152 increments.
- Standard outlet opening is 50mm diameter.
- Honey comb grating as per OPSD 403.010 – Type B and Type A.
- All dimensions are in millimeters, unless otherwise shown.
- See here how ditch inlets are incorporated into maintenance holes.
- IPEX/Plastech ICD backplates available.