--zwENGINEERS <br />CIVIL STRUCTURAL BUILDING DESIGN <br />• SURVEYING LAND USE PLANNING <br />2350 Oakmont Way, Suite 105 Eugene, OR 97401 <br />(541) 485-8383 Fax (541) 485-8384 <br />Oakleigh Meadows Cohousing SHEET NO. 31 OF ~Z <br />Oakleigh Lane PROJECT NO. 13-7076 <br />Eugene, Oregon BY MAC <br />Swale Design DATE 3111/13 <br />Vegetated Swale <br />Runoff On-Line <br />Area = 0.47 ac C = 0.9 <br />1= 0.22 in/hr 0 = 0.09 cfs <br />Swale Dimensions <br />Top Width = <br />7 ft <br />Length = <br />58 ft <br />Bottom Width = <br />5 ft <br />Volume = <br />87 cu ft <br />Depth = <br />0.25 ft <br />Wetted Parameter= <br />7.06 ft <br />Side Slope Left = <br />4.00.:l <br />Hydraulic Radius = <br />0.21 ft <br />Side Slope Right = <br />4.00.:l <br />Slope = <br />0.0050 ft/ft <br />Area = <br />1.50 ft"2 <br />n = <br />0.35 <br />• <br />OK <br />OK <br />OK <br />1 1 0.25 ft <br />fufeiiuir::: 1 ft min <br />i <br />Swale Performance <br />Available Required <br />Q = 0.16 cfs > 0.09 cfs <br />V = 0.11 fps < 0.9 fps <br />Hydraulic Residence = 9.00 min < 9.00 min <br />Diagram <br />for conveyance <br />loft <br />3.00 3.00 <br />1. 1 X0.5„1 <br />4.00 4.00 <br />1.5 _1, 1 - J_ 5ft <br />"C 7 ft <br />for pollution control <br />Conveyance <br />I = 2.1 in/hr <br />A= 5.75 ft^2 <br />Available <br />Q= 1.18 cfs <br />• <br />Wetted Parameter = <br />H;/draulic Radius = <br />1.5 <br />0.88 cfs <br />10.22 <br />0.562 <br />Required <br />. 0.88 cfs <br />OK <br />09 <br />Swale2012 <br />