The correct answer is: D. All the above
Kennedy’s theory is a method for designing channels that are stable and have a low risk of erosion. The theory takes into account the following factors:
- The breadth of the channel
- The depth of the channel
- The ratio of the breadth to the depth
- The slope of the channel
- The type of soil in the channel
- The amount of water flowing through the channel
By taking all of these factors into account, Kennedy’s theory can be used to design a channel that is safe and efficient.
The breadth of the channel is important because it affects the amount of water that can flow through the channel. A wider channel can carry more water than a narrower channel.
The depth of the channel is important because it affects the amount of sediment that can be transported by the water. A deeper channel can transport more sediment than a shallower channel.
The ratio of the breadth to the depth is important because it affects the stability of the channel. A channel with a high breadth-to-depth ratio is more stable than a channel with a low breadth-to-depth ratio.
The slope of the channel is important because it affects the velocity of the water. A channel with a steep slope has a higher velocity than a channel with a gentle slope.
The type of soil in the channel is important because it affects the erodibility of the soil. A channel with erodible soil is more likely to erode than a channel with non-erodible soil.
The amount of water flowing through the channel is important because it affects the velocity of the water. A channel with a high flow rate has a higher velocity than a channel with a low flow rate.
By taking all of these factors into account, Kennedy’s theory can be used to design a channel that is safe and efficient.