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OSTP Bed Design f- , : <br /> UNIVERSITY <br /> , Minr��sota Pollution Worksheet OF MINNESOTA �' <br /> Control Agency ���� <br /> 1. SYSTEM SIZING: Project ID: v 05.13.14 <br /> A. Design Flow(Design Sum.1A): 750 GPD <br /> B. Code Maximum Depth": 20 inches Designers Maximum Depth:�inches <br /> C. Soil Loading Rate: 0.68 GPD/ft2 <br /> D. Required Bottom Area: Design Flow (1.A)= Loading Rate (1.C)= Initial Required Bottom Area <br /> 750 GPD= 0.68 GPD/ft2= 1103 ft2 <br /> E. Select Distribution Method: �v pressut'e <br /> ❑Gravity <br /> F. Select Dispersal Type: ❑ROCk <br /> d Registered <br /> G. If distribution media is installed in contact with sandy or loamy sand or with a percolation rate of 0.1 to 5 mpi <br /> indicate distribution or treatment method: <br /> 2. BED CONFIGURATION: (for sites with less than 6%slope) <br /> A. Select size Multiplier: 1.0 1.0= pressurized or 1.5 =gravity <br /> B. Req'd Bottom Area = Bottom Area (1.D)X Size Multiplier= <br /> 1102.9 ft2 X 1.0 ft = 1103 ftz <br /> C. Designed Bottom Area: ��ft Optiona(upsizing of bed area <br /> D. Select Bed Width: 24 ft <br /> E. Calculate Bed Length: Designed Bottom Area = Bed Width = Bed Length <br /> 1103 ftz= 24.0 ft= 46.0 ft <br /> 3. MATERIAL CALCULATION: ROCK <br /> A. If drainfield rock is being used, select sidewall absorption <br /> C�inches = �ft <br /> B. Media Volume: (Media Depth +depth to cover pipe)X Designed Bottom Area =ft3 <br /> (�ft+ �ft) X �ftZ =��ft3 <br /> C. Calculate Volume in cubic yards: Media volume in cubic feet :27=cubic yards <br /> ��ft3 - 27 = ��yd3 <br /> 4. MATERIAL CALCULATION: REGISTERED PRODUCTS-CHAMBERS AND EZFLOW <br /> A. Registered Product: Chambers <br /> B. Component Length: �ft 0 <br /> C. Component Width: ��ft 0 <br /> D. Component depth (louver or depth of sidewall loading) 12 in <br /> D. Number of Components per Row= Bed Length divided by Component Len�th (Round up) <br /> 46 ft= �� ft= 12 components <br /> E. Actual Bed Length= Number of Components X Component Length: <br /> 12 components X 4.0 ft = 48.0 ft <br /> F. Number of Rows= Bed Width divided by Component Width <br /> 24 ft = C� ft = 8.0 rows Adjust width so this is an whole number. <br /> G. Total Number of Components=Number of Components per Row X Number of Rows <br /> 12 X �� = 96 components <br />