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Hoyt <br /> PROJECT: 19TH AVE SITE <br /> **STORM DETENTION SIZING CALCULATIONS <br /> ORIFICE DISCHARGE DATA <br /> Record Id: ORIFICE <br /> Descrip: ORIFICE Increment 0.10 ft <br /> Start El. 467.6700 ft Max El. 0.0000 ft <br /> Orif Coeff 10.62_ Lowest Orif EL 467.67 <br /> Lowest Diaml 0.6300� Dist to next g0000 ft <br /> D2 (7?.8000 in ,Dist to next 0.0000 ft <br /> DETENTION POND STORAGE DATA <br /> Record Id:VAULT <br /> Descrip: 'DETENTION VAULT Increment 0.10 ft <br /> Start El.4 467. 700 ft Max El. 473.7000 ft <br /> Length 4 .110011 (Width 15. - 5 ix Is 4(4 i t • <br /> 'Catch 100.0000 � <br /> ROUTING RESULTS <br /> Start of live storage:467.6700 ft <br /> Event Match Q(cfs) Peak Q(cfs) Peak Stg(ft) Vol(cf) Vol(acft) Time to Empty �)j� <br /> 2 year 0.0214 0.0214 471.6255 3085.28 0.0708 114.17 `�` �u s� <br /> 10 year 0.1081 0.0900 ( 471.7732 13200.47 0.0735 114.83 <br /> 1100 year 0.2247 0.2168 472.4946 3763.20 0.0864 ' 114.83 1 <br /> 472,41 - Col d4. 4atia 5.05Cwaotiat} <br /> CONCLUSION <br /> Proposed detention vault meets flow control criteria. Provide factor of safety per criteria based on <br /> 91.5%site impervious area=46.5%increase. <br /> Required detention volume=5513 cf t $ X j#4( -1 2_i , 5 ( ( .zJ ) <br /> Provided detention volume=52'1 x 22'w x 5.03'h live storage ri o,1OP <br /> 51"Dr21E6 <br /> VOlowaVVIE <br /> 11/17/2011 2:37 PM <br />