Abstract: The piano key or PK weir represents a relatively new hydraulic structure in both research and practice. There is currently a limited understanding regarding the influence of the large number of PK weir geometric parameters ...

Abstract: A piano key (PK) weir is a type of nonlinear (labyrinth-type) control structure with a relatively small spillway footprint. No standard PK weir design procedure is available, and the amount of published information on PK ...

Abstract: The piano key (PK) weir is a relatively new nonlinear weir geometry that can be used to increase spillway discharge capacity over linear weir geometries, particularly when the weir footprint area is restricted (e.g., spillways ...