A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mobile Discharge Measurement
Abstract The discharge of a sewer has to be determined often over a short period only. This can serve as design basis, and an accurate discharge measurement is required only later. In this chapter, the so-called mobile discharge measurement for rectangular, trapezoidal and circular profiles is introduced. Starting from the simplest configuration of a circular cylinder in a rectangular channel, the discharge-head curves, the modular limits, the submergence effect and practical questions are discussed for a number of designs. At optimal sites, the discharge can then be determined up to ±5% accuracy. In addition, the thin-plate Venturi flume is presented that is proposed for larger channels or rectangular sewers of width up to 3 m, with an access by a standard manhole. Mobile discharge measurement with overflow structures is not recommended, because the mounting precision, the security and accuracy are demonstrated to be unsatisfactory.
Mobile Discharge Measurement
Abstract The discharge of a sewer has to be determined often over a short period only. This can serve as design basis, and an accurate discharge measurement is required only later. In this chapter, the so-called mobile discharge measurement for rectangular, trapezoidal and circular profiles is introduced. Starting from the simplest configuration of a circular cylinder in a rectangular channel, the discharge-head curves, the modular limits, the submergence effect and practical questions are discussed for a number of designs. At optimal sites, the discharge can then be determined up to ±5% accuracy. In addition, the thin-plate Venturi flume is presented that is proposed for larger channels or rectangular sewers of width up to 3 m, with an access by a standard manhole. Mobile discharge measurement with overflow structures is not recommended, because the mounting precision, the security and accuracy are demonstrated to be unsatisfactory.
Mobile Discharge Measurement
Dr. Hager, Willi H. (author)
Wastewater Hydraulics ; 354-378
2010-01-01
25 pages
Article/Chapter (Book)
Electronic Resource
English
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