Which of the following materials will have the highest non-scouring velocity in the sewer?
- AVitrified tilesCorrect
- Bcast iron
- CCement concrete
- DEarthen material
Solution
Concept
Maximum permissible velocity
Step-by-step solution
1. Vitrified (stoneware) tiles have a very smooth, hard surface and withstand about 4.5 m/s. 2. Cast iron and concrete allow lower velocities; earthen channels the lowest.
Explanation
The harder the material, the higher the non-scouring velocity.
Correct answer: A) Vitrified tiles