design type fall trapezoidal notch fall

[jaseela123d]

Notch Fall

It consists of a body wall built through a canal. There are notches in the wall of the body between the pillars. The notches may be trapezoidal or rectangular in shape. The notch threshold is level with the channel bed upstream above the drop. Thus, the discharge ratio in depth of the normal section of the channel is also maintained in the fall. Therefore, the drop can be used to measure the discharge of a channel. As the notch threshold is at bed level there is no sediment. An energy dissipating device is provided below the height.