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OSTP Mound Desi�n UNIVERSITY ""`�' <br /> MlnnewtaPoliution yyorksheet � � /0 S�0 Q OF MINNESOTA � <br /> ���y P �� <br /> ti <br /> 1. SYSTEM SIZING: Project iD: v 03.19.15 <br /> A. Design Flow: 600 GPD TABLE IXa <br /> B. Sof( Loading Rate: 0.45 GPD/ft2 `����f��������M ASSORPTION AREA <br /> ��eso�noN�►nos uswc rEacou�Tesn <br /> TY�ene L.wN c �,wd�.A-2.a <br /> t. Depth to Limiting Condition: 1.8 ft <br /> rK�.ue�u�. �r'e�"°" �a �,e'p� �a.�d <br /> D. Percent Land Slope: 9.0 9b � ,� "�^ ,,,� �aa� <br /> t�'� "'u° ��'t ".r° <br /> E. Design Media Loading Rate: 1.2 GPD/ft� _ <br /> `0' 1 t <br /> F. Mound Absorption Ratio: 2.60 °'�°s +�2 � �•e + <br /> 01 w S f►rr�anq �.6 2 1 1.i <br /> aEle I u+a� ta,e sa <br /> MOtlND LONTOUR L4AD�iG RATES: B'o,s o.�e t.s � �.` <br /> Gntour 'e`°30 0.� 2 o.�e 2 <br /> Nw�surad ' Ta�Qrro-dorivvr 3,�,s o.a s.a o.�s 2 <br /> Porc Rato � ma�r�d absorption R�: <br /> �w m ows s.s o.� �.e <br /> s 6orr�pi i.o. �.3,2.0. Z.a.2.6 _u s,w,zo . B o.s a.a <br /> . >iso . . . . <br /> 61-120 mpi OR 5.0 _12 <br /> . 'Systems with these values are not Type I systems. <br /> : �to n�pr ,s.o• _6• Contour Loading Rate (tinear loading rate)is a <br /> recommended value. <br /> 2. DISPERSAL MEDIA SIZiNG <br /> A. Catculate Dispenal Bed Area: Design Ftow+ Design Media Loading Rate=ft� <br /> �GPD f 1.2 GPD/ftZ = ��ft2 <br /> If a larger dispersal media area is desired, enter size:�ft� <br /> B. Enter Dispersal Bed Width: 10.0 ft Can not exceed f0 feet <br /> C. Calcutate Contour Loading Rate: Bed Width X Design Media Loading Rate <br /> �� ft� X 1•2 GPD/ft� = 12.0 gal/ft Can not exceed Tabfe 1 <br /> D. Catcutate Minimum Dispersal Bed Length: Dispersal Bed Area = Bed Width = Bed Length <br /> ��ft2 + 10.0 ft = 50.0 ft <br /> 3. ABSORPTION AREA SIZING <br /> A. Calculate Absorption Width: Bed Width X Mound Absorption Ratio =Absorption Width <br /> 10.0 ft X 2.6 = 26.0 ft <br /> B. For slopes>1X, the Absorption Width is meawred�w�hill from the upslope edge of the Bed. <br /> Calculate Downslope Abwrption Width: Absorption Width - Bed Width <br /> 26.0 ft - 10.0 ft = 16.0 ft <br /> DISTRIBUTION MEDIA: ROCK <br /> A. Media Votume: Media Depth below and above pipe X Length X Width <br /> 0.75 ft X 50.0 ft X 10.0 ft= 375 ft3 = 27 = 14 yd3 <br />