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Average hydraulic calculation
| Nominal width |
100/20-0 |
150/20-0 |
200/10-0 |
300/0 |
400/0 |
500/0 |
| Max. flow rate (l/s) |
9,0 |
20,2 |
26,8 |
53,3 |
110,0 |
190,9 |
precipitation
(l/s ha) |
maximal permissible surface (m²) |
| 150 |
600 m² |
1340 m² |
1780 m² |
3550 m² |
7330 m² |
12720 m² |
| 200 |
450 m² |
1010 m² |
1340 m² |
2660 m² |
5500 m² |
9540 m² |
| 250 |
360 m² |
800 m² |
1070 m² |
2130 m² |
4400 m² |
7630 m² |
| 300 |
300 m² |
670 m² |
890 m² |
1770 m² |
3660 m² |
6360 m² |
| 350 |
250 m² |
570 m² |
760 m² |
1520 m² |
3140 m² |
5450 m² |
| 400 |
220 m² |
500 m² |
670 m² |
1330 m² |
2750 m² |
4770 m² |
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Please note: This average calculation is based on a length of the channel line of 20 meters and open air drain run-off. We can compile an exact hydraulic calculation for according to the local circumstances at any time. |
 Classification according to load classes
| Load class |
Capacity load |
Areas of use according to EN 1433 |
 |
A 15 |
15 kN |
Thoroughfares, which are used exclusively by pedestrians and cyclists and other comparable areas e.g. green spaces. |
 |
B 125
| 125 kN |
Footpaths, pedestrian zones and similar areas such as parking lots and Multi storey car parks. |
 |
C 250
| 250 kN |
Only applies to attachments / drains in the slope areas, with a maximum of 0,5 from the kerbstone to the road and to the pavement, O.2 m. This also applies to hard shoulders free of traffic. |
 |
D 400
| 400 kN |
Road lanes (as well as pedestrian streets ), side strips of roads, parking areas and similar fortified (macadam) thoroughfares. |
 |
E 600
| 600 kN |
Not suitable for public transport areas with a high wheel load, e.g. roads in the precincts of industrial construction. |
 |
F 900
| 900 kN |
Areas with an especially high percent of wheel load, e.g. Flight operational areas at airports. |
This table is available as PDF file for download. |
