The piano key (PK) weir has advanced over the labyrinth weir to increase the discharge
capacity. Piano key weirs exhibit nonlinear flow behavior and are easy to place on the …

Piano Key (PK) and trapezoidal labyrinth (TL) weirs are nonlinear control structures suitable
for narrow channels with high discharge by expanding the crest length of the overflow. In …

Forum papers are thought-provoking opinion pieces or essays founded in fact, sometimes
containing speculation, on a civil engineering topic of general interest and relevance to the …

ABSTRACT Piano Key Weir (PKW) is a non-linear weir with a small foundation footprint that
allows large discharges through a narrow channel. The presence of overhangs classifies it …

Dams fall in 'installations containing dangerous forces' because of their massive impact on
the environment and civilian life and property as per International humanitarian law. As …

Abstract Piano Key Weirs (PKWs) are often preferred over other spillways for the dam
rehabilitation due to high discharging capacity. The present study investigates scour …

This study experimentally investigated the temporal evolution of the scour parameters
downstream of a trapezoidal piano key weir. The densimetric Froude number (Fr d50) in the …

This investigation deals with the mechanics of movement of singular quartz gravel and
coarse sand riverbed particles upstream and over the inlet key of three Type A piano key …

In the present era, sedimentation and bed morphology near hydraulic structures is a great
concern as it affects the flow configuration and reduces the discharge capacity. Experimental …

The piano key weir (PKW) is an evolution with more hydraulic efficiency, compared to
labyrinth weir. The studies on this type of weir have shown a significant increase in its …