Vertical drop weir is such a weir, whose D/S face is given steep batter. The U/S face is mostly vertical, but it can also be given batter like D/S face. The design of such a weir consists of: 1. Fixing Various Elevations by Hydraulic Computations 2. Design of Weir Wall 3. Design of Impervious Floor of the Weir Wall 4. [...]
In this article we will discuss about the design of impervious floor of the weir for sub surface flow. Khanki weir failed in 1895. An expert's committee under the Chairmanship of Lt. Col. Caliborn, then Principal of Thomson College, Roorkee was set up to investigate the causes of failure of this weir, which was founded on sandy soil. The committee [...]
The following points highlight the eight main components of diversion head works. The components are: 1. Weirs 2. Scouring or Under Sluices 3. Divide Wall 4. Fish Ladder 5. Log Chute 6. Main Canal Head Regulator 7. Regulation of Head Regulator 8. Silt Control at Head Regulator. Component # 1. Weirs: Weir is a solid obstruction, put across the river [...]