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' TRAPEZOIDAL AND CIRCULAR CHANNEL ANALYSIS HYDROCAIC HYDRAWCS MANUAL. PAGE 11 <br />i~ <br />r <br />i{ <br />t <br />}s <br />i <br />I~ <br />r:. <br />:. <br />!'.. <br />i_' <br />I <br />1 <br />CHAPTER 2 <br />TRAPEZOIDAL AND CIRCULAR CHANNEL ANALYSIS <br />A trapezoidal channel has flat bottom and sloping sides, as illustrated m Figure 2-1. ZYapezoidal <br />shapes are often used for man-made channels, because they are relatively easy to construct and <br />maintain, and provide good flow capatlty. <br />TOP WIDTH <br />_ ~1 <br />t- <br />~ FL^W ARE Z = Slde Slope <br />w <br />Q <br />_~ <br />BOTTOM WIDTH <br />Figure 2-1 Cross-Section of Trapezoidal Channel <br />A Circular Channel is a segment of a round pipe or asemi-circular flume which 1s flowing part-full <br />of water, as illustrated in Figure 2-2. <br />nrn,~r Trn <br />Flgure 2-2 Cross-Section of Circular Channel <br />0 1989 Dodson & Associates, Inc.. 5629 FM 1960 West. Suite 314, Houston. Texas 77069, (713) 440-3787. All Rlphis Reserved <br />