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, <br />.. �� � � ���� �p � � 4 > <br />No S c N ANTS� �Iyl� � <br />�- <br />C]PIANNiNG [�IENGiF.CCFIN(s C]OURVCYIfYp �� ` <br />___ _ <br />_._. ____.. __ __� <br />A'1� MEOIC4L OL�NT4L OLOO <br />GVF.PGTT WN 6020'1 200P99�C110 <br />__..._ �_ _— _. "_ I <br />August 16, 1977 <br />DRAINAGE STUDY <br />PIADISON 21VENUE PRD <br />lJsing the rational method: Q= CI?1 <br />where Q <br />C <br />I <br />A <br />= Peak Runoff Rate for 10 year storm, cf.s <br />= Runoff Coefficient (Standard IIand600k f�:: �ivil <br />Engineers) <br />= Rainfall :Cntensity (Chart 18, U.S.W.B.) in/hr <br />= Area, acres <br />Undevelooed Peak Flow: <br />A <br />C <br />I <br />= 1.77 Acres <br />= 0.30 <br />= 1.45, TC = 1G minutes -- Exhibits I& II <br />.'. Q= CIA =(0.30)(1.45)(1.77) = 0.77 cfs maximum allowaba.e dischar9e <br />-1- <br />