[amp_mcq option1=”By subtracting the depth of the culvert from the canal bed level” option2=”By subtracting the thickness of culvert plus the depth of the culvert from the canal bed level” option3=”Both (A) and (B)” option4=”None of these” correct=”option1″]
The correct answer is: A. By subtracting the depth of the culvert from the canal bed level.
The level of the floor of a syphon aqueduct is the level of the canal bed minus the depth of the culvert. The depth of the culvert is the distance from the top of the culvert to the bottom of the canal bed. The canal bed is the surface of the ground that the canal is built on.
The thickness of the culvert is the distance from the outside of the culvert to the inside of the culvert. The thickness of the culvert does not affect the level of the floor of the syphon aqueduct.
Therefore, the correct answer is A. By subtracting the depth of the culvert from the canal bed level.