Laserfiche WebLink
OSTP Mound Design Worksheet �.. <br />Minnesota Pollution -%A OL Clo%r%.. UNIVERSITY K <br />wnrrol Agency <br />.ravrar <br />SYSTEM SIZING: <br />Project ID: <br />A. Design Flow (Flow Ft Solt - 1.A) : <br />450 GPD <br />B. Soil Loading Rate (flow h Soil -3.C): <br />0.60 GPD/ft' <br />C. Depth to Limiting Condition: <br />E. 7 ft <br />D. Percent Land Slope: <br />5.0 % <br />E. Design Media Loading Rate: <br />1.2 GPD/ft2 <br />F. Mound Absorption Ratio (Table lXa): <br />2.00 <br />G. Design Contour Loading Rate: <br />12.0 GPD/ft <br />��••�•• Table i •••-- <br />-MOUND CONTOUR LOADING RATES: <br />Moasurod <br />Pore Rato <br />OR <br />Toxturo - dortvod <br />mound absorption ratio <br />Ttt~Vt GW Cieatment <br />Contour <br />Loading <br />Rato: <br />I 60nipi <br />OR <br />1.0. 1.3. 2.0. 2.4. 2.6 <br />'12 <br />61.120 mpf <br />5.0 <br />.12 <br />n 120 nlpf' <br />.5.p <br />cb' <br />12. DISPERSAL MEDIA SIZING <br />Ur 1V11NNbSO'IA <br />V 11.09.. <br />TABLE IXa <br />LOADING RATES FOR DETERMINING BOTTOM ABSORPTION AREA <br />AND ABSORPTION RATIOS USING PERCOLATION TESTS <br />Ttt~Vt GW Cieatment <br />Level A. A-2, 6, <br />tlonAArea <br />Percolation Rte <br />0*1) <br />Londrilto�w <br />Absorption <br />At" Lam" Mound <br />Rte <br />(WdAl') Rado <br />RaW Absorption <br />(Wdne) Raft <br />i0.1 to 5 <br />1.2 1 <br />1.6 1 <br />'0.1 to 5 (free sand <br />and be rine saAM <br />0.6 2 <br />1 1.8 <br />s to 15 <br />0.78 1.5 <br />1 1.6 <br />16 to 30 <br />0.6 2 <br />0.78 2 <br />31 to <br />0.6 2A <br />0.78 2 <br />48 to 60 <br />0.46 2.6 <br />0.6 2.6 <br />61 to 120 <br />5 <br />0.3 5.3 <br />>120 <br />'Systems with these values are not Type I systems. Contour Loading Rate (linear <br />loading rate) is a recd nmended value. <br />A. Calculate Required Dispersal Bed Area: Design Flow (1.A) + Design Media Loading Rate (1.E) - fe <br />If a larger dispersal media area 450 GPD + 1.20 GPD/ft2 375 fe <br />is desired, enter size: ��fe <br />B. Calculate Dispersal Bed Width: Contour Loading Rate (1.G) + Design Media Loading Rate (1.E) - Bed Width <br />12.0 ft 1.2 gpd/ft2 10 ft <br />C. Calculate Dispersal Bed Length: Dispersal Bed Area (2.A) + Bed Width (2.13) - Bed Length <br />375 ft2 + 10 ft - 38 ft <br />D. Select Dispersal media: <br />E. If using a registered product, enter the Component Length: in + 12 - it <br />F. if using a registered product, enter the Component Width: in + 12 - IC�-Jft <br />G. Number of Components per Row - Bed Length (2.C) divided by Component Length (4.J) (Round up) <br />ft + it - - 7components/row <br />H. Number of Rows - Bed Width (2.8) 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 whole number gol/ft results in 9 foot <br />(� `'j wide bed. <br />ft + t�_ ! ft - E� rows <br />1. Total Number of Components - Number of Components per Row X Number of Rows <br />E -==X E= z components <br />