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<br />John Andert Parcel Split <br />Rosevl11e. Min~esot2 <br /> <br />Sheet 2 ~f l! <br /> <br />Roof Draina~e - The proposed roof design breaks up the surface <br />with valleys and peaks and is at two levels. ~ater will be <br />collected with ~utt~r5 and downspo~tg. 70~ of the roof water <br />vilA be directed to areas draining South. 2S ~hown 1n Fig. 3. <br /> <br /> <br />r Jl <br />I . <br />I ! <br />I I <br />\~ <br /> <br />J <br /> <br />30' <br /> <br /> <br />... <br /> <br />~:Zo,1 <br />t <br />t <br /> <br />HG.3 ROOF SKET"CH . <br />Joh... A~Je"+ Pt-of"'~ef}i, <br />H 0-"'_ "", Ro.r<;~ 1 SI" rl- <br />R cstl.)! /It. , MN. <br /> <br />~ <br /> <br />\ <br /> <br />~! <br /> <br />~\ <br />I <br />i <br />J_ <br />~ <br /> <br />--- <br /> <br />~ <br /> <br />--- <br />.IC~: <br />-...... ~oof 1=!nLoJ <br />-+_o.......GIA-Hr..~ t De_,IIHe.+ <br /> <br />f...........-.. 0-;",..,< :5,1 it <br /> <br />Bunoff Calculation <br /> <br />nUnOl.l iUo"i..> ~:;.s~ ::~ ~:':;.::~~.~ !"~; ~~~c:r~nt- ~:-td proDosed u5age. <br />Maximuro ru~off rate Is calculated with the Rational Formula: <br />Q = Act. A = acres drained; c = runoff coefficient wni~h varie~ <br />with ~oil; slope an1 land usage; 1 = intensity of rainfall, <br />inches per hour. Intensity is determined from U. S. W~ather <br />Bureau Records for the Metro Area u81n~ a duration equal to the <br />maximum concentration time ~nd a 100-year 24-hour rainfall. <br />Concentration time is the time it takes ~a~~r to run from the <br />furthe5t point to the out1~t. Msxirovm ru~off quantity is <br />calculated by the U. S. Dep~rtment of ABricultdre, 5"11 <br />Conservation Servi~e method <S.C.S. ~ethod). <br /> <br /> <br /> <br />J <br />