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� � _ OSTP Mound Desi�n Worksheet <br /> �;� � � <br /> � UNIVERSITY �:` <br /> Minnesota Poilution O ��� <br /> � Control Agency >1 rb Slope OF 1VIINNESOTA ���.�, . ��� <br /> 1 <br /> 1• SYSTEM SIZING: Project ID: ���,pq,� <br /> A.Design Flow(Flow&Soit- 1.A): 450 GPD '�'A�rLE �xa <br /> B. Sofl Looding Rate(Flow Fr Soi!-3.C): 0.6� GPD/ft2 LOADiNG RATES FOR DEfERMINING BOTTOM ABSORPTION AREA <br /> AND ABSORPTION RATIOS USING PERCOLATION TESTS <br /> C.Depth to Limiting Conditfon: 1.7 ft �rreaeme�n�c eM Level A,n•z,e. <br /> D.Percent Land S(ope: 5.0 % Pe.aaanon R.ce ��Of��O."� M„a,a �� eq,,,,,d <br /> ��� �� � � � <br /> E. Design Media Looding Rate: 1.2 GPD/ft2 c�=) �O t�> �O <br /> F.Mound Absorptfon Ratio(Tabte IXa): 2.00 <o� . � _ � <br /> G.Design Contour Loading Rute: 12.0 GPD/ft o.i to s �,Z � �,6 � <br /> ;0.�to 5 pme sand 0.6 2 1 1.8 <br /> Table 1 and ba tine sa <br /> MOUND COM'OUR LOADIHG RATES: 6 to as o.78 �.5 1 1.6 <br /> Ntoawred Toxturo-derivnd Contour 16 W 30 0.6 2 0.78 2 <br /> P9rC Rato � manW absorptiw�ta' R�aLa g �3t to 45 0.6 2A 0.78 2 <br /> 46 to fi0 0.4B 2.6 0.6 2.6 <br /> s bOmpi 1.0. t.3.2.0.2.1.2.6 :12 <br /> 61 to t20 - 5 0.3 5.3 <br /> 61-120rty>i OR SA c12 �>i2o _ _ . _ <br /> z i zo mpi• .SA` _6� �Systems wlth these values are not T I <br /> ype systems. Contouf Loadir�g Rate(lineaf <br /> loading rate)is a recommended value. <br /> 2. DISPERSAL MEDIA SIZ�NG <br /> A. Calculate Required Dlspersal Bed Are�n:Design Flow (1.A)+Design Media Loadfng Rate (1.E)=ft2 <br /> If a larger dispersat rt►edia area 450 GPD+ 1.20 GPD/ftZ = 375 ft� <br /> is desired,enter size: ��ft2 <br /> B. Calculate Dispersa!Bed Width:Contour Loading Rate (t.G)+Design Medio Looding Rnte (1.E)=Bed YlSdth <br /> 12.0 ft = 1.2 gpd/ftz = 10 ft <br /> C. Caltulate Disperwl Bed Length: Dispersa!Bed Area (2.A)�-Bed Width (2.B)=Bed Length <br /> 375 ft2 + 10 ft , = 38 ft <br /> D. Select Di�ersnl Media: <br /> E. If using a registered product,enter the Component Length: �in= 12 = ��ft <br /> F. if using a registered product,enter the Component Width: �in+ 12 = �ft <br /> G.Number of Components per Row=Bed Length (2.C)divided by Component length (4.J)(Round up) <br /> � ft � � ft= �componentslrow <br /> H.Number of Rows =Bed Width (2.6)divided by Component Width (4.K)(Round up) Note:CLR of 10.3 <br /> Adjust Contour Loading Rate on Design Summary page until this number is a whote number g°1�h rewlts in 9 foot <br /> wide bed. <br /> � ft ' � ft � rows <br /> �, Totat Number of Components =Number of Compor�nts per Row X Number of Rows <br /> � X � _ �components <br />