Abstract: Offsets into the flow at joints or cracks can cause hydraulic jacking of spillway chute linings or remove rock blocks from unlined chutes. Previous articles established experimentally validated relations for uplift pressure ...

Abstract: Spillway chutes containing offsets into the flow at joints or cracks are susceptible to hydraulic jacking from injected high pressures and erosion of foundation materials caused by flow through the openings. Consequently, ...

Abstract: Parshall flume tests were conducted to determine the sensitivity on indicated flow rate resulting from improperly located staff gauges and differing entrance conditions to the flume. An acrylic 2 ft (61 cm) Parshall flume ...

Abstract: Hydraulic jacking is a serious threat to concrete spillway chutes, demonstrated by the catastrophic spillway chute failure at California’s Oroville Dam in 2017. To improve the understanding of uplift pressure and joint ...