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University of Minnesota Trench and Bed Worksheet <br /> An ao�ed rr�rgfes,nusr n.emt�ed,flue reef wia be�la�ed. <br /> 1. Flow <br /> A. Esf1ided Flory®gpd(t A-1) T <br /> 44 BOOM e Flws n61-0 <br /> " <br /> Numlw of Cis <br /> Be� I u III IV <br /> 2 300 225 180 60%o <br /> ,, . jjZM the <br /> 4 600 375 256 values 500 gallons or 100%of Average <br /> 7$0 Y" in tloe Design Flow(A-1)or dual <br /> 6 900 525 332 Class I, alternating pump wistern <br /> or 11 <br /> K 8 1200 675 408 LColumns <br /> 2. MlnWwrn Sepik Tank Cepa* <br /> B. Se*is*tapec3ty ft C-1) 2250 gallons Number of tankakomrpartrorerrts 0 <br /> C. Effh�ntlSer(yesfno) <br /> C-1 uNnI m Tank Ca in Gallops <br /> Capacity with GD <br /> Numbwof hbinu n and pump in <br /> Bedrooms vA G basement" <br /> 2 or less; 750 1125 1500 <br /> 1000 1500 s • <br /> 5 or6 1500 2250 3000 <br /> GD=garbage disposal,Must have multiple tanks or compartrnmMs <br /> " Must have multiple tanks,compartments or effluent screen <br /> 3. ft"Tw* <br /> D. Pump tank nem Who) Mmunum size 8 needed <br /> 1250 gadorn <br /> 4. SOILS(Sb evabdon data) <br /> E. NO to nestricti ng layer= 5.1 =ft <br /> F. Mlafrwm depth of systun item E-3 It= 5.1 - 3 = 2.1 ft <br /> G. Texture send loam Percolation Date ®mpi <br /> ifavadaw <br /> K SSF 127 felgpd(see fligure D-15) <br /> I. %Slope % <br /> D-15 Soil Characteristics&SSF <br /> Perc Rate Sod Texture Soil Sizing Factors <br /> fe/gpd <br /> <0.1Coarse sand 0.83 <br /> - € r o trench> %of totalsystem <br /> santl *' Sod with>50%Me sand particles <br /> 1.6 '""` A mound must be use <br /> An other or performance system <br /> 16-30 Lown 1.67 <br /> $t� Siltlomn,s�t `° 00__r�. <br /> 46-60 Clay barn, 2.20 <br /> sandy day <br /> or day <br /> f 120 Cray,"san6yr 20 <br /> 1�.... Page 1 of 2 <br />