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<br />STATEMENT NUMBERS <br />3425 - 3650 <br /> <br />OPERATION <br /> <br />Determine station of left and right encroach- <br />ments for Methods 3 and 4. <br /> <br />3655 - 3700 <br />3705 - 3845 <br /> <br />Determine if last subarea has been calculated. <br /> <br />Calculate energy slope in friction loss and <br />call SLARA if slope/area start on first cross <br />section. <br /> <br />3875 - 3895 <br /> <br />Determine actual velocity and discharge for <br />channel, left and right overbanks, alpha <br />coefficient, and the velocity head. <br /> <br />Call subprogram BWEIR for special bridge if <br />the energy grade elevation has not been <br />computed (BWEIR has already been completed). <br /> <br />3850 - 3870 <br /> <br />3900 - 3965 <br />3970 - 4075 <br /> <br />Calculate shock losses and energy elevation. <br /> <br />Compute Manning's "n" if high water marks <br />are given. <br /> <br />4080 - 4105 <br /> <br />Call subprogram DC to calculate critical <br />depth if it has been determined that DC <br />should be computed and it it hasn't been <br />calculated already. <br /> <br />4110 - 4160 <br /> <br />Determine error between assumed and computed <br />water surface. Also determine if error is <br />less than allowable (.01). <br /> <br />4165 - 4235 <br />4240 - 4295 <br /> <br />Determine encroachments by Methods 5 and 6. <br /> <br />The error is acceptable so see if interpolated <br />cross sections should be added. <br /> <br />4300 - 4315 <br /> <br />Check to see if critical depth should be <br />computed because of the calculated HV being <br />greater than 94 percent of the theoretical <br /> <br />(HV = 2~W ) HV based on a prismatic <br /> <br />channel. If so set up to calculate DC by <br />subprogram DC. <br /> <br />4320 - 4375 <br /> <br />Calculate volume of water in river, travel <br />time. <br /> <br />4380 - 4705 <br /> <br />Printout headings for divided flow, allowable <br />velocity change, bridge controls, encroach- <br />ments used, etc. <br /> <br />4710 - 4900 <br /> <br />Printout headings for normal output, output <br />profile data for tape 18 and set up for plotting <br />the cross sections by calling SCALE and XSEC. <br /> <br />16 <br />