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C H <br />9 Hfn <br />H � H <br />H �f <br />'09 H <br />CO H <br />Hx <br />Ht7 <br />OH <br />WOE <br />H �] <br />9H 1 <br />t HH <br />gy <br />H <br />O t7ti <br />Z AIn <br />r3 D co <br />! 1� <br />DODDS ENGINEERS, INC. JOB NO. E57127 <br />CIVIL GNGINEEPING SURVEYING PLANNING DATE <br />4205 14BTH AVE. N.E., SUITE 200 - BELLEVUE. WA seco7 BY <br />12o6i es5-7e77 OR 454-3743 <br />DESIGN OF THe GRASS UrJEO SWALP-S '3"ALL BE BASED UP001iE FOlOc, V�J6 <br />uTY OF r--VE2[Tr- crITEC[A, : <br />4.3.15.6 The total length of grass lined swale is determined <br />as follows: <br />4.3.15.8 <br />Total Site Paved Area Length <br />Under 10,000 sq. ft. <br />10,000 to 50,000 sq. ft. <br />Greater than 50,000 sq. ft. <br />Not required <br />lo0 feet plus 1 linear <br />foot for each 400 sq <br />ft of pavl=_d area above <br />10,000 sq ft. <br />200 feet plus 1 linear <br />foot for each 800 sq <br />ft of paved area above <br />50,000 sq ft. <br />other design criteria for grass lined swales: <br />a) <br />b) <br />c) <br />d) <br />e) <br />f) <br />25 year design storm <br />maximum velocity of four feet per second using <br />Mannings Equation with h-.035 <br />Maximum flow depth of 5.4 inches. (o.45') <br />Maximum side slope of three horizontal to one <br />vertical <br />Longitudinal slope no greater than. 5 percent <br />Minimum freeboard of six inches <br />