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r � . <br /> _f . . _ _ <br /> TIME OF CONCENTRATION FOR: <br /> ; f <br /> � MERRILL CREEK APARTMENTS <br /> r NARBECK BASIN <br /> ' � PROPOSED CONDITIONS <br /> ; ( Channel Flow: Ti= L <br /> � <br /> ! � 60�4�So)o.s — <br /> where: , T,: travel time(min). <br /> ( L: flow length (ft). <br /> � k�: time of concentration velocity factor(ft/s), (see Table 3.5.2C). <br /> Lso: slope of hydraulic grade line(land slope, R/ft). <br /> CALCULATIONS: <br /> `- Channel Flow: Segment#= 1 T,= 1.530679 min. <br /> L= 547 <br /> (_ change EI. = 11 <br /> �4= 42 <br /> � so= 0.0201 <br /> � Segment#= 2 T,= O.l 19368 min. <br /> L= 144 <br /> change El. = 33 <br /> � k� = 42 <br /> s„= 0.2292 <br /> l T�= 1.650046 min. <br /> I <br /> l <br /> 1 <br /> I P� ' <br />