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FLOW PROCESS FROM NODE 530.00 TO NODE 531.00 IS CODE = 21 <br />---------------------------------------------------------------------------- <br />»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< <br />>>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< <br />INITIAL SUBAREA FLOW-LENGTH(FEET) = 137.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 154.50 DOWNSTREAM(FEET) = 153.30 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = <br />5.611 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) <br />= <br />5.792 <br />SUBAREA Tc AND LOSS RATE <br />DATA(AMC II): <br />DEVELOPMENT TYPE/ <br />SCS SOIL AREA <br />Fp <br />Ap SCS <br />Tc <br />LAND USE <br />GROUP (ACRES) <br />(INCH/HR) <br />(DECIMAL) CN <br />(MIN.) <br />COMMERCIAL <br />B 0.11 <br />0.30 <br />0.100 56 <br />5.61 <br />SUBAREA AVERAGE PERVIOUS <br />LOSS RATE, Fp(INCH/HR) <br />= 0.30 <br />SUBAREA AVERAGE PERVIOUS <br />AREA FRACTION, Ap <br />= 0.100 <br />SUBAREA RUNOFF(CFS) = <br />0.57 <br />TOTAL AREA(ACRES) = <br />0.11 PEAK FLOW <br />RATE(CFS) <br />= 0.57 <br />+ + <br />DA-E5 <br />+ + <br />++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ <br />FLOW PROCESS FROM NODE 540.00 TO NODE 541.00 IS CODE = 21 <br />---------------------------------------------------------------------------- <br />»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< <br />>>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< <br />INITIAL SUBAREA FLOW-LENGTH(FEET) = 16.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 154.50 DOWNSTREAM(FEET) = 154.20 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = <br />5.000 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) <br />= <br />6.187 <br />SUBAREA Tc AND LOSS RATE <br />DATA(AMC II): <br />DEVELOPMENT TYPE/ <br />SCS SOIL AREA <br />Fp <br />Ap SCS <br />Tc <br />LAND USE <br />GROUP (ACRES) <br />(INCH/HR) <br />(DECIMAL) CN <br />(MIN.) <br />COMMERCIAL <br />B 0.10 <br />0.30 <br />0.100 56 <br />5.00 <br />SUBAREA AVERAGE PERVIOUS <br />LOSS RATE, Fp(INCH/HR) <br />= 0.30 <br />SUBAREA AVERAGE PERVIOUS <br />AREA FRACTION, Ap <br />= 0.100 <br />SUBAREA RUNOFF(CFS) = <br />0.55 <br />TOTAL AREA(ACRES) = <br />0.10 PEAK FLOW <br />RATE(CFS) <br />= 0.55 <br />++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ <br />FLOW PROCESS FROM NODE 541.00 TO NODE 542.00 IS CODE = 61 <br />---------------------------------------------------------------------------- <br />»»>COMPUTE STREET FLOW TRAVEL TIME THOU SUBAREA««< <br />»»>(STANDARD CURB SECTION USED) ««< <br />UPSTREAM ELEVATION(FEET) = 155.10 DOWNSTREAM ELEVATION(FEET) = 148.20 <br />STREET LENGTH(FEET) = 543.00 CURB HEIGHT(INCHES) = 6.0 <br />STREET HALFWIDTH(FEET) = 16.00 <br />DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 8.00 <br />INSIDE STREET CROSSFALL(DECIMAL) = 0.020 <br />OUTSIDE STREET CROSSFALL(DECIMAL) = 0.020 <br />SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 <br />STREET PARKWAY CROSSFALL(DECIMAL) = 0.020 <br />