Browsing by Author "Bauers, Curtis W."
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Item Field Flow Testing of Six Large Venturi Meters(St. Anthony Falls Hydraulic Laboratory, 1991-02) Voigt, Richard L.; Bauers, Curtis W.The St. Anthony Falls Hydraulic Laboratory (SAFHL) performed field flow measurement tests for six large Venturi meters (MI00A, MI00B, MI0IA, MI0IB, MI02A, MI02B) owned and operated by the Metropolitan Waste Control Commission (MWCC), and installed in the 1930's. The MWCC oversees the collection and treatment of sanitary wastewater discharges in the Twin Cities Metropolitan area of Minnesota. The tests were completed as a subcontract to James M. Montgomery Consulting Engineers, Inc. (JMM), of Wayzata, Minnesota, with whom the MWCC had contracted to conduct an overall evaluation of the Venturi meters. Four of the six Venturi meters (Fig. 1) were located on the west bank of the Mississippi River, just upstream from the Lake Street bridge; two of these meters had throat diameters of 42 inches, with the other two having throat diameters of 25 inches. The two remaining meters (Fig. 2), each with a throat diameter of 25 inches, were located at the Minneapolis-St. Paul border, along the east bank of the Mississippi River.Item Hydraulic Model Study of the Busse Woods Reservoir Dropstructure(St. Anthony Falls Hydraulic Laboratory, 1990-12) Voigt, Richard L. Jr.; Bauers, Curtis W.The Busse Woods Drop Structure and recreation area is located in Cook County, Illinois in Suburban Chicago. Operated as a typical Soil Conservation Service drop structure since 1976, it is now contemplated that the structure be modified to reduce flood flows downstream of the structure for floods greater than the two-year event. In order to maintain its present low flow capabilities and at the same time decrease the return frequency for high discharges associated with low frequency return interval events, it was proposed by the illinois Department of Transportation (IDOT) that a 2.3 ft high steel box beam be installed 1.2 feet above the crest. Placement of such a beam would modify the existing weir flow into three flow regimes: 1) weir flow at low flows, 2) orifice flow at moderate flows, and 3) a combination of orifice and weir flow when the beam is overtopped at higher flows. This report contains the results of rating curve and sediment erosion tests carried out on a 1:12 geometric scale hydraulic model of half of the structure.