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' ,Co'% ,�. ,��'� s <br /> MOUND DESIGN WORKSHEET <br /> (For Flows up to 1200 gpd) <br /> �4U6`f I 9�l <br /> A. �OW Estimued Sewage Flows in Gallons per day <br /> � d Number 'fype I Type D) Type ID Type <br /> Estimated�_gpd �� <br /> or measured x 1.5 = gpd. <br /> z 30o z2s �so 60�;� <br /> B. SEPTTC TANK LIQUID VOLUMES 4 � � Z� �� <br /> ,�• 5 750 450 294 in <br /> Z�J � gd110T1S 7 1� 600 ' 3')0 Tp�I. <br /> 8 1200 675 408 � <br /> C. SOILS refer to site evaluation �/ �d� <br /> � � � • �n� .a���n w�, <br /> 1. Depth to restricting layer= 2 C� inches � � feet �����Y <br /> Numher nf Minimum liyuid liyuid apaory wiN wiN disposal& <br /> 2. Depth of percolation tests = � Z-. lriClleS �^'�'� �r��Y w�+s�a�� ��h��a <br /> 3. Texture �-�^—�� Percolation rate /S z o p 2iN� '�° ��u 15� <br /> m i a�K, �oou isoo 2000 <br /> s,K�s isoo zuo 3aoo <br /> 4. Land slopeb 3 % '."'"v 200° '°°° °°°° <br /> D. ROCK LAYER DIMENSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock layer: A x 0.83 = <br /> �-S"C� gpd x 0.83 sq. ft./gpd =�Z ZSq. ft. <br /> 2. Select width of rock layer (max 10' if<120 mpi max 5') _ �d ft. <br /> 3. Length of rock layer= area=width= •'n�.� A."=a �'°e:a ° °:'m:° Qo ° <br /> a:"�>oia�a:o��oc e g D� <: <br /> Z 2 s . ft.= �� ft. _�ft. �°�a,.b�P,��{�o o- <br /> �Gay'G°��.ax:e- .e- ae'o;o 0 <br /> q Od.•.. m a,e c o qocD�nb ep;: : <br /> Wl�}h {} qa >'ae o� QD'�OD U as e eD e <br /> 411 i� <br /> <120mpi <10' Length � ft <br /> E. ROCK VOLUME >120mpi <5' <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; ���sq. ft. x � <br /> ft. =�ZZcu. ft. <br /> 2. Divide cu. ft.by 27 cu. ft./cu. yd. to get cubic yards; <br /> �cu. ft. -27= Z� cu.yd. <br /> 3. Multi pl y cubic yards b y 1.4 to get weight of rock in tons; ��cu. yd. x 1.4 <br /> ton/cu. yd. _�tons. <br /> F. ABSORPTTON WIDTH Absorption WidW SizingTable <br /> 1. Percolation rate in top 12 inches of soil is G�2ompi ���� c�u� �o�r�� <br /> Minura pa Ixh Soil Texnve pa day per wid[h ro Rxk <br /> Texture.�.cr�4-�-,— c�n �,,�fo« t,aya w�am <br /> F�m�o.t co�s�a t.zo �.00 <br /> o.�ws s�a uo �.00 <br /> 2. Select allowable soil loadin rate from table; o.��s FineSand o.�o z.00 <br /> / ,� � 6 w 30 S L.oyam 0.60 2.00 <br /> (n v gpC�/� s�was suc� oso z.ao <br /> 46 to 6p qay Loam 0.45 2.67 <br /> 60 to 120 Gay 0.24 5.00 <br />_ 3. Calculate adsorption width ratio by dividing rock layer S'°�"��°�zo Gay o.zo 6.00 <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; <br /> 1.20 gpd/ftz= •Cvb gpd/ft�= 2� �o <br /> 4. Multiply adsorption width ratio by rock layer width to get <br /> required adsorption width; <br /> � x �� ft— Zaft <br />