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1. SYSTEM SIZING:v 07.14.15 <br />A.Design Flow: GPD <br />B.Soil Loading Rate:GPD/ft2 <br />C.Depth to Limiting Condition: ft <br />D.Percent Land Slope: % <br />E.Design Media Loading Rate:GPD/ft2 <br />F.Mound Absorption Ratio: <br />2. DISPERSAL MEDIA SIZING <br />A.Calculate Dispersal Bed Area: Design Flow ÷ Design Media Loading Rate = ft2 <br />GPD/ft2 =ft2 <br />ft2 <br />B.Enter Dispersal Bed Width: ft Can not exceed 10 feet <br />C.Calculate Contour Loading Rate: Bed Width X Design Media Loading Rate <br />ft2 X GPD/ft <br />2 =gal/ft Can not exceed Table 1 <br />D.Calculate Minimum Dispersal Bed Length: Dispersal Bed Area ÷ Bed Width = Bed Length <br />ft2 ÷ ft = ft <br />3. ABSORPTION AREA SIZING <br />A.Calculate Absorption Width: Bed Width X Mound Absorption Ratio = Absorption Width <br />ft X = 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 - Bed Width <br />ft - ft = ft <br />4. DISTRIBUTION MEDIA: ROCK <br />A. <br />ft X ft X ft = yd3 <br />21.0 11.0 <br />11 <br />Media Volume: Media Depth X Length X Width <br />0.75 38.0 <br />450 GPD ÷ <br />OSTP Mound Design <br />Worksheet >1% Slope <br />2.1 <br />450 <br />2.10 <br />1.2 <br />9.0 <br />0.78 <br />Project ID: <br />10.0 <br />1.2 <br />1.2 375 <br />If a larger dispersal media area is desired, enter size: 380 <br />12.0 <br />380 10.0 38.0 <br />10.0 <br />10 <br />2.1 21.010.0 <br />*Systems with these values are not Type I systems. <br />Contour Loading Rate (linear loading rate) is a <br />recommended value. <br />10.0 285 ft3 ÷ 27 =