A drop inlet shaft spillway is expected to pass a flow of 15m3/s at a flood...

 

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A drop inlet shaft spillway is expected to pass a flow of 15m3/s at a flood level of 2.5m above the crest lip of the drop concrete pipe. The drop inlet crest is 6m above the crown of a cast-in-place concrete pipe of Manning roughness coefficient, 0.015 and length to outlet of 90m. Determine the cast-in-place pipe diameter and check that all the necessary suitable parameters for proper spillway operation including avoidance of slug flow in the drop pipe are met. A drop inlet shaft spillway is expected to pass a flow of 15m3/s at a flood level of 2.5m above the crest lip of the drop concrete pipe. The drop inlet crest is 6m above the crown of a cast-in-place concrete pipe of Manning roughness coefficient, 0.015 and length to outlet of 90m. Determine the cast-in-place pipe diameter and check that all the necessary suitable parameters for proper spillway operation including avoidance of slug flow in the drop pipe are met.

Answer rating: 100% (QA)

To determine the castinplace pipe diameter and check the parameters for proper spillway operation we can use the Mannings equation and some basic hydr... View the full answer