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� � OSTP Mound Design ����. <br /> UNIVERSITY <br /> MC���Po�^u�tpn Worksheet > 1 % Slope OF MINNESOTA ,,,��.�, <br /> 9e Y <br /> 1. SYSTEM SIZING: Project ID: v 03.19.15 <br /> a. Design Flow: 750 GPD TABLE IXa <br /> B. Soit Loading Rate: 0.45 GPD/ft� �OADING RATES FOR DETERMINING DOTTOM 11SSORPTION AREA <br /> AI�ABSORPTION RATi05 USING PERCOlATION TESTS <br /> rn.cmenc L�iM c rre.em.ne uvN A,M:,e, <br /> C. Depth to Limiting Condition: ft �� � <br /> PlfGOI�00l1 RiC! AfN LWAI/I` �d AfN LOIAII� MDYIW <br /> D. Percent Land Slope: 4.p 9� �""°'� n.0 "°'O'�"0^ ,e.� Ab'0'�"O^ <br /> uvan�'► "'"° qnan�'1 R"no <br /> E. Design Media Loading Rate: 1.2 GPD/ftZ ��, . � _ � <br /> F. Mound Absorption Ratio: 2.60 o,ros �.z > >.s � <br /> �,co s cr,re saro o.6 2 1 1.8 <br /> Tebit+I Ia�ed wa t�ne sano <br /> MOUNO CONTQUR LOADING RATES: !'=1°'s o.re t.s � �.s <br /> Co�touf <br /> ��s���o o.s z o.�e x <br /> Maiwrad � TGxturo-dcrivad l�n� ?�,so+�s O.s 2.a o.78 2 <br /> Dprc Rate mound absorption rat` <br /> . RdtO: j us ro� Q.48 2.8 0.6 2.6 <br /> _60mp� t.�. 1.3. 2 0 Z.a. 2.6 c t2 <br /> ���ro�20 • 5 0.3 b.3 <br /> ,,,_o . . . . <br /> 5t�120�1Qi !�ra s.o ='1 �Systems with these values are�ot Type I systems. <br /> = i2o mp;• -s.c• _6• Contour Loading Rate (linear loading rate) is a <br /> recommended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calculate Dispersal Bed Area: Design Flow : Design Media Loading Rate = ft` <br /> 750 GPD : 1.2 GPD/ft� = 625 ft� <br /> If a larger dispersal media area is desired, enter size: 630 ft2 <br /> B. Enter Dispersal Bed Width: 10.0 ft Con not exceed f0 feet <br /> C. Catculate Contour Loading Rate: Bed Width X Design Media Loading Rate <br /> 1� ft2 X 1.2 GPD/ftz = 12•0 gal/ft Con not exceed Table t <br /> D. Calculate Minimum Dispersal Bed Length: Dispersat Bed Area = Bed Width = Bed Length <br /> 630 ft� = 10.0 ft = 63.0 ft <br /> 3. ABSORPTION AREA SIZING <br /> A. Calcutate Absorption Width: Bed Width X Mound Absorption Ratio =Absorption Width <br /> 10.0 ft X 2.6 = 26.0 ft <br /> B. For slopes >1%, the Absorption Width is measured downhill from the upslope edge of the Bed. <br /> Calcutate Downstope Absorption Width: Absorption Width - Bed Width <br /> 26.0 ft - 10.0 ft = 16.0 ft <br /> 4. DISTRIBUTION MEDIA: ROCK <br /> A. Media Volume: Media Depth below and above pipe X Length X Width <br /> 0.75 ft X 63.0 ft X 10.0 ft = 473 ft3 = 27 = 18 yd3 <br />