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� � � � � OSTP Mound Design <br /> UNIVERSITY <br /> �Cornro A�m�n Worksheet > 1 % S[ape OF MINNESOTA � <br /> � y - �., <br /> 1. SYSTEM SIZING: Project ID: ��i y 2 �3 <br /> A. Design Flow: 750 GPD TABLE IXa <br /> B. Soit Loading Rate: 0.60 GPD/ft2 �ADMIG RATES FOR DETER�IiNMG�OTTOM AeSOR►TqN AREA <br /> nw,�sort�noN rt,�►�os usu+�paecou�or+�s <br /> t. Depth to Limiting Condition: 1.8 ft �"`�` `'�"�"'2�°� <br /> v�.�rue�e <br /> D. Percent Land Slope: 4.0 � �� �`��'oidfn� � �� � <br /> ��++i'> a"° ��,� �.a° <br /> E. Design Media Loading Rate: 1.2 GPD/ft� <br /> `�� � 1 <br /> F. Mound Absorption Ratio: 2,pp o+�o s �,z � �,a � <br /> 01 to 5(fx�e saM Q,6 2 1 7.6 <br /> O�E�' and ba firx aa <br /> ���T'������;: 6 to 15 0.78 7.6 1 1.6 <br /> �p�� ���� 0.6 2 0.78 2 <br /> �d • TOztu�o-dOrfvpd <br /> POft RatY � ry101JfMd�i�o�ti0n f �$ 31 to 45 0.8 2A 0.78 4 <br /> ��: 46 to 60 0.46 2.8 0.6 2.6 <br /> s 60mpi 1.0. 1.3,2.0.2.4,2.6 :.�x 6�1O��0 - 5 0.3 5.3 <br /> , 5�20 - - - - <br /> 61•120 mpi dR S.0 ..a2 <br /> . "Systems with these values are not Type I systems. <br /> : �io n,p;• >5,0• _b. Contour Loading Rate (linear loading rate) is a <br /> recommended vatue. <br /> 2. DISPERSAL MEDIA SIZING <br /> A• Catculate Dispersal Bed Area: Design Flow= Design Media Loading Rate =ft2 <br /> 750 GPD : 1.2 GPD/ftZ = b25 ftZ <br /> if a larger dispersal media area is desired, enter size: 630 ft2 <br /> B. Enter Dispersat Bed Width: 10.0 ft Can not exceed 10 feet <br /> C. talculate Contour Loading Rate: Bed Width X Design Media Loading Rate <br /> �� ft2 X 1•2 GPD/ft2 = 12.0 gal/ft Can not exceed Tobte 1 <br /> D. Catculate Minimum Dispersal Bed Length: Dispersal Bed Area = Bed Width = Bed Length <br /> 630 ft2 = 10.0 ft = 63.0 ft <br /> 3. ABSORPTION AREA SIZING <br /> A. Calculate Absorption Width: Bed Width X Mound Absorption Ratio =Absorption Width <br /> 10.0 ft X 2.0 = 20.0 ft <br /> B. For stopes >1�, the Absorption Width is measured downhitl from the upslope edge of the Bed. <br /> Calculate Downslope Absorption Width: Absorption Width - Bed Width <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> 4. DISTRISUTION MEDIA: ROCK <br /> A. Media Volume: Media Depth X Length X Width <br /> 1.�0 ft X 63.0 ft X 10.0 ft= 630 ft3 = 27 = Z3 yd3 <br />