- It is not a gate but a sort of permanent structure that is install at the mouth of the opening.
- Its main purpose is to prevent the entrance of debris into the openings.
- A framed trash rack structure of steel sections or of R.C.C. members
- is a construct and iron bars openings of the framework to prevent the entrance of debris. See Fig. 14.25.
- This structure is usually construct at the entrances of sluiceways or penstocks etc.