Laserfiche WebLink
��� <br />a�x <br />C H <br />9HN <br />r <br />H � <br />hC f� <br />Ox0 <br />�1 N �1 <br />VJ H <br />�xo <br />HC <br />��g <br />�w n <br />t"y� <br />Hy <br />gy <br />H <br />n dC N <br />�yf�i� <br />z <br />H O !n <br />' <br />/ <br />RFITIQNAL METHOD RUNOFF� COEFFICIF.NTS <br />If the Design F.ngineer elects to clapart from <br />coefficients shown on pa,qe 13, he must adequately ' <br />demonstrate justification f.or this chan,qe and in no <br />case differ from the .following ranqes <br />Descriotion �f Area Runoff Coeff.icients <br />Business: <br />Downtown areas 0.70 tU 0.95 <br />Neighborhood areas 0.50 to 0.70 <br />Resi6ential: <br />Sin�le-family areas 0.35 to 0.50 <br />Multi-units, detached 0.40 to 0.60 <br />�lulti-units, iattached�<;P �,- ; . *��-1;;vj�0^;60y�,�t;o:�0:75 � , <br />Residential (1/2 acre lots or more) �.30 to 0.45 <br />Apartment Dwelling areas 0.50 to 0.70 <br />Tndustrial: <br />Light areas 0.50 to 0.60 <br />Heavy areas 0.60 to 0.',9Q <br />Parks, cemeteries 0.10 to 0.25 <br />Flayqrounds 0.20 to 0.35 . <br />Railroad yard areas 0.20 to 0.40 <br />Unimproved areas 0.10 to 0.30 <br />Taken from "Urban Storm Drainage Criteria Manual", <br />Denver Regiona .Counci of Governments, Marc ., I�S69 <br />19 <br />