The following details pertain to the crossing of a canal and a natural drain.
Bed level of canal = +171 m; Full supply depth of canal = 1.6 m: Bed level of drain =+169.2 m: Depth of flow in the drain corresponding to high flood discharge = 2.5 m.
The type of cross drainage work to be designed at the crossing location is:
1
a canal syphon
2
a syphon aqueduct
3
an aqueduct
4
a super passage