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<br />Chapter 4 Example Application <br /> <br />energy slope at the downstream end of the Yolo River. Enter a value of <br />0.0004 (ftIft), then press the Enter key. This completes all of the necessary <br />boundary condition data. Press the OK button on the Boundary Conditions <br />form to accept the data. <br /> <br />The last step in developing the steady flow data is to save the data to a file. <br />To save the data, select the Save Flow Data As option from the File menu on <br />the Steady Flow Data Editor. A popup box will prompt you to enter a <br />description of the flow data. For this example enter" 1 0, 2, and 1 % chance <br />events". Once the data is saved you can close the Steady Flow Data Editor. <br /> <br />Performing The Hydraulic Calculations <br /> <br />Now that all of the data have been entered, we can calculate the steady water <br />surface profiles. To perform the simulations, go to the HEC-RAS main <br />window and select Steady Flow Analysis from the Simulate menu. The <br />Steady Flow Analysis window should appear as shown in Figure 4.10. <br /> <br /> <br />Figure 4.10 Steady Flow Analysis Simulation Window <br /> <br />i <br />" <br />i' <br /> <br />The first step is to put together a Plan. The PIan defines which geometry and <br />flow data are to be used, as well as providing a title and short identifier for the <br />run. To establish a plan, select New Plan from the File menu on the Steady <br />Flow Analysis window. Enter the plan title as "Existing Conditions Run" and <br />then press the OK button. Enter a short identifier of "Existing" in the Short <br />ID box. <br /> <br />i, <br />" <br /> <br />4-13 <br /> <br />Ii <br />