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A polynomial weir is a weir that has a geometry defined by a polynomial equation of any order n. [11] In practice, most weirs are low-order polynomial weirs. The standard rectangular weir is, for example, a polynomial weir of order zero. The triangular (V-notch) and trapezoidal weirs are of order one. High-order polynomial weirs are providing ...
The Goulburn Weir under construction, November 1889 Approval for the construction of the Goulburn Weir was granted on 16 December 1886, by the passing of The River Goulburn Weir Act 1886 . [ 3 ] This act allowed the treasury of Victoria to issue up to £20,000 for the construction of the weir and related works.
A drop structure, also known as a grade control, sill, or weir, is a manmade structure, typically small and built on minor streams, or as part of a dam's spillway, to pass water to a lower elevation while controlling the energy and velocity of the water as it passes over.
The Rookwood Weir is a concrete weir, built from 2020 to 2023 on the Fitzroy River, near Gogango, about 50 km south-west of Rockhampton, Queensland, Australia Queensland Treasurer Cameron Dick said the weir was the largest built in Australia since World War II.
This involved the construction of weirs in order to divert water into the mills. The weirs, however, presented an obstacle to navigation and to solve this problem locks were built alongside the weirs to enable boats to be moved between levels. Originally these were flash locks that were essentially removable sections of weir. A boat moving ...
Tilting weirs are usually controlled by human intervention but a self-regulatory tilting weir that could be counterbalanced by floating weights was patented in 1994. At the time of construction the 2018 Leed's tilting weirs were unique for being raised and lower by deflating and inflating giant neoprene bladders. [2]
Roller dams are a type of weir, or a dam that is designed to allow water to flow over the top in continuous action. They are used on rivers or other such moving bodies of water where erosion damage is undesirable, yet likely to occur.
A barrage dam can be used to divert water for irrigation needs or limit the amount of water downstream. In most cases, a barrage dam is built near the mouth of the river. The site of dam construction needs to be thoroughly investigated to ensure that the foundation is strong enough to support the dam and has low possibility of failing. [2]