This type of gate is designed as a torsionally-rigid structure suitable for one sided operation over long spans. A speciality of KGAL's, these gates have become increasingly popular as a means of controlling flows and levels in rivers. Operation is normally by hydraulic cylinder from one side.
Advantages
Torsionally rigid, can be operated from one side only.
Gate installation is unobtrusive.
Good overflow discharge characteristics.
Large spans include more pivots to reduce gate deflection.
Economical design.
Disadvantages
Sill recess which could be a problem where there is high silt content.
