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r � <br /> � � OSTP Mound Desi�n <br /> � UNIVERSITY <br /> MinnesotsRallution Worksheet > 1% Slope OF IVIINNESOTA <br /> ���� <br /> 1. SYSTEM SIZING: v 11.05.31 <br /> A. Design Flow(Flow @ Soi(- 1.A) : 450 GPD ' �; :`�'�� ' `;: � , � ��": <br /> ; i�i�D'�0l�ft1D���. � <br /> B. Soif Loading Rate(Flow&Soil-3.C): 0.78 GPD/ft2 �� �r.. b �.�� � � ��ri <br /> �R� ��;�� �� <br /> C. Depth to Limiting Condition: 1.5 ft � ,,.-,:, '��. ;; � ` <br /> D. Percent 1.and S(ope: 5.0 % 5 borrwi � �.0,1 a,z.o,z,4,z.b - -�z <br /> E. Design Medio Londing Rote: 1.2 GPD/ft2 b�•im�+M � s.o s�z <br /> F. Mound Absorption Ratio(Table IXa): 1.30 z�zo rnp�� >s o� - sc• <br /> G. Design Contour Loadinq Rate: 12.0 GPD/ft •Systems with these values are not Type I systems. <br /> (From Table I - same as Linear Loading Rate) Contour Loading Rate is a recommended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calcutate Required Dispersal Bed Area:Design Flow (1.A)=Design Medie Loading Rate (1.E)=ftZ <br /> If a larger dispersat media 450 GPD= 1.20 GPD/ftZ = 375 ft2 <br /> area is desired,enter size: 380 ft2 <br /> B. Calculate Dispenal Bed Width:Gontour Loading Rate (1.G):Design Media Looding Rate (1.E)=Bed Width <br /> 12.0 ft : 1.2 gpd/ft2 = 10 ft <br /> C. Catculate Drspersol Bed Length: Disperso(Bed Area (2.A) =Bed Width (2.6)=Bed Length <br /> 380 ft2 : 10 fc = 38 ft <br /> D. Select Dispersof Mediu: ❑Rock <br /> �Other Approved Media (Describe): Rock � <br /> 3. ABSORPTION AREA SIZING <br /> Note:Mound setbacks are measured from the Absorption Area. <br /> A. Calculate Absorption Width:Bed Width (2.B)X Mound Absorption Ratio (1.F) =Absorption Width <br /> 10.0 ft X 1.3 = 13.0 ft <br /> B. For slopes>1%, the Absorption Width is measured downhill from the upslope edge of the Bed. <br /> Calculate Downslope Absorption Width:Absorption Width {3.A)-Bed Width (2.6)=ft <br /> 13.0 ft - 10.0 ft = 3.0 ft <br /> Comments: <br /> Slope, CLR Choice, Material issues <br />