Most economical channel section //most economical rectangular channel
![](https://i.ytimg.com/vi/d3uJmLPjDbQ/mqdefault.jpg)
7:14
Civil Engineering Basic Knowledge Part 4
![](https://i.ytimg.com/vi/9PJhN517foA/mqdefault.jpg)
16:09
Most economical trapezoid channel section //open channel flow //
![](https://i.ytimg.com/vi/2D24RzHOVs0/mqdefault.jpg)
12:33
Most economical triangular channel section
![](https://i.ytimg.com/vi/yB4IGOgsL2U/mqdefault.jpg)
21:27
Most economical rectangular channel
![](https://i.ytimg.com/vi/eW4Hi1kfvXg/mqdefault.jpg)
27:43
Most economical trapezoidal channel
![](https://i.ytimg.com/vi/O5uF1POq1BQ/mqdefault.jpg)
24:35
Class 5th Maths Perimeter and Area
![](https://i.ytimg.com/vi/I0vDXO5FeaI/mqdefault.jpg)
14:03
The 7 Levels of Math Symbols
![](https://i.ytimg.com/vi/stWSGCsfgEE/mqdefault.jpg)
11:41