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f <br /> ( TIME OF CON�ENTRATION FOR: <br /> I GREENS OF MERRILL CREEK <br /> MULTI-HOME COMPLEX � <br /> EXISTING CONDTTIONS <br /> SheetFlow: T,= O.b2(n,L)o.e <br /> ( �pZ�o.s�so�o.e <br /> I Where; T,: travei dme(min). <br /> n,: sheet tlow Manning's Effective roughness ccefflicient(from Table 3.5.2C). <br /> L: ]ow length(ft). <br /> � PZ: 2-year, 24-hour rainfall(in),(see Figure 3.S.IC). <br /> s�: slope of hydraulic grade line(land slope,fdft). <br /> IShallow T,= L <br /> � <br /> Concentrated Flow: (pg,(So)o.s <br /> , <br /> Where: T,: vavel time(min). <br /> L: low ]cngth(ft). <br /> k,; time of concentradon velocity factor(fds), (see Table 3.5.2C). <br /> so: slope of hydraulic grade line(land slope, fUft). <br /> I <br /> � CALCULATIONS: <br /> � Sheet Flow: Segment#= 1 T,= 14.882 min. <br /> n,= 0.4 <br /> L= 169 <br /> ( change El. = 59.78 <br /> PZ= 1.55 <br /> s„= 0354 <br /> I <br /> I I <br /> I <br /> I 3i <br /> Pape 1 <br /> I <br />