Sewer design app!

Calculate the needed diameter and slope for a sewer pipe. Then you can change again slope and diameter and recalculate. - Initial ground elevation = 10 m (ground elevation of initial and final manholes is used to calculate the ground slope and check that slope of the pipe is not less than ground).- Final ground elevation = 9 m- Length of pipe = 60 m- Desired flow = 40 liters per seconds- Desired tractive force = 2 N/m2And as a result of the design, after pressing the calculate button, we get the following results:Slope (Slope), Pipe diameter, height of water in the pipe (depth / diameter), Velocity and froude numberThe slope and diameter can be modified in the result and calculate again.