SSWEN61NEERS. <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 '9 Z <br />Oakleigh Lane PROJECT NO. 13-7076 <br />Eugene, Oregon BY MAC <br />Swale Design DATE 3/11/13 <br />Vegetated Swale <br />Runoff On-Line <br />Area = <br />0.47 ac <br />C = <br />0.9 <br />= <br />0.22 in/hr <br />Q = <br />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 :1 <br />Hydraulic Radius = <br />0.21 ft <br />Side Slope Right = <br />4.00 :1 <br />Slope = <br />0.0050 fUft <br />Area = <br />1.50 ft^2 <br />n = <br />0.35 <br />Swale Performance <br />Available <br />Required <br />Q = <br />0.16 cfs <br />> <br />0.09 cfs OK <br />V = <br />0.11 fps <br />< <br />0.9 fps OK <br />Hydraulic Residence = <br />9.00 min <br />< <br />9.00 min OK <br />Diagram <br />forconveyance <br />10 ft <br />3.00 3.00 <br />1 1~ <br />4.00 4.00 <br />- 1 1 r <br />'lariig: <br />1.5 _ 1 <br />Conveyance <br />1= <br />A= <br />5ft <br />for pollution control <br />2.1 in/hr <br />5.75 ft^2 <br />Available <br />Q = 1.18 cfs <br />1.5 <br />~~ft <br />0.25 ft <br />t <br />1 ft min <br />i <br />Q;n = . 0.88 cfs <br />Wetted Parameter = 10.22 <br />Hydraulic Radius = 0.562 <br />Required <br />> 0.88 cfs <br />OK <br />