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., .. <br /> �� TR55 Tc Worksheet P.o. , <br /> Hyd. No. 1 <br /> Storm frequency = 2 yrs <br /> Sheet Flow <br /> Manning's n-value = 0.150 <br /> Flow length = 78•0� <br /> Two-year 24hr precip. = 1.55 in <br /> Land slope = SA °h <br /> Travel Time ........................................ = 6.6 min <br /> Shallow Concent►ated Flow <br /> Flow length = 0 ft <br /> Watercourse sloPe = 0.0 % <br /> Surface descnption = Paved <br /> Average velocity = 0.00 ff/s <br /> TravelTime ........................................ = 0.0 min <br /> Channel Flow <br /> Cross section flow area = 0.0 sqft <br /> Wetted perimeter = 0.0 ft <br /> Channel slope = �•a °� <br /> Manning's n-value = 0.015 <br /> Velocity = 0.00 ft/s <br /> Flow length - 0.0 ft <br /> TravelTime ........................................ � min <br /> Total Travel Time, Tc ........................ = 6.6 min <br /> ■ <br />