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U- Structure Design Guidance Sheet <br />colt Shi I 2/15/20061 1 Recr tion Enaineerina and Plannin <br />303 545 -5883 <br />Pro'ect: <br />Upper Smelter Boatina Park <br />=donot to <br />= values that can be adjusted <br />his spreadsheet can be used to help develop average depths of high and low flow channels. Actual dimensions <br />an be set during final design using these numbers as a guideline. Please only adjust cells that are blue. Other <br />ells should not be adjusted at all. Plot values at the bottom can be inserted into HEC -RAS directly using cut and <br />aste. All computations are made using the wier equation and are separated using Shipley's vertical separation <br />iethod. Dimensions are based on width PROJECTIONS (i.e. the plot shows shadow on the wall of light shown <br />trough channels). Arc length is not shown. Analysis is vertical so location of low flow within high flow is not <br />nportant and will vary according to project constraints. This is not a comprehensive listing of limitations of <br />nalysis and spreadsheet should be used by experienced designer for guidance purposes only. <br />Figure 12. Approximate weir calculations for the upper structures at the proposed Smelter <br />boating Park. <br />Figure 12 shows that at a low flow width of 35 feet the depth in the low flow will be 2.2 feet <br />at 300 cfs. A similar calculation reveals a depth of 1.5 feet at 200 cfs. The high flow width <br />of 56 feet creates a center flow depth of 4.93 feet at a flow of roughly 1400 cfs. Both this <br />location and the Lower Smelter Rapids Structures show a high flow side depth of roughly <br />2.7 feet at recommended flows. These dimensions are appropriate for the character of the <br />Wt <br />- <br />©- <br />-® <br />Figure 12. Approximate weir calculations for the upper structures at the proposed Smelter <br />boating Park. <br />Figure 12 shows that at a low flow width of 35 feet the depth in the low flow will be 2.2 feet <br />at 300 cfs. A similar calculation reveals a depth of 1.5 feet at 200 cfs. The high flow width <br />of 56 feet creates a center flow depth of 4.93 feet at a flow of roughly 1400 cfs. Both this <br />location and the Lower Smelter Rapids Structures show a high flow side depth of roughly <br />2.7 feet at recommended flows. These dimensions are appropriate for the character of the <br />Wt <br />