Laserfiche WebLink
ivi ivi c,vi�. nu✓ VU.LY rnn Vlc�a'tGJ1GY LVUIaLHJ Jl.[(L'L'1V YK11V1 l(/�UU�( <br /> .��� s� a3 So � � v � �v �,��. <br /> . d 2..a,�� �l � _ ( <br /> ��� ��SL.0 I�e�.� �'a�esti I C�� 30�{ � �`� <br /> �� �o� �.��� <br /> OSTP At-Grade Design Worksheet UNIVERSITY <br /> Minnesow Polfutlon OF MINNESOTA �"�- , <br /> Control enc <br /> 1. DISPERSAL MEDIA SIZING: Projeci I0: v 12.08.06 <br /> A. Design Flow: C� �Q�> �s CU GPD C. %Land Slope: (p�d % <br /> l <br /> 6. Soil Loading Rate: �.(��j GPDIft2 � � D. Con[our Loading Rate: �GPO/ft <br /> E. Absorption Bed Width = Contour Loading Rate (1.D} = Soil Loadrng Rate (1.B} Cannot exceed i5 feet <br /> (� GPD/ftZ= (�, GPD/ft = ��. d it <br /> F. Absorption Bed Length = Design F(ow (1.A) S Contour Lovding Rate (1.0) <br /> �� GPD : (�� (� GPD/ft = 1 (J ft <br /> G. Required Absorption Bed Area a Design Flow (1.A) �Soil Loading Rate (1.6) <br /> ''� gpd = GPD/ft� - ftZ <br /> 2. BERM SIZING: <br /> A. Determine System Herght = media height + 12" cover, divide by 12 inches per foot to convert to feet <br /> /� G ft + ( �'� in S 12 in/ft ) _ �. � ft <br /> 51opeltlldplPl Ti6f[-t1 <br /> t7nd SIoPe� 0 1 2 - � _ �_ S - - i � j � � _ �� . �. <br /> �io 1� i,� �,� ��'f �.� �.Z� �.1� �.m 4.l� !.� tA 4.70 <br /> �ownsiore�oa � �17 t� �1 �.1� 5.00 3.�8 4at t3S ljJ 1.1� 7� <br /> 8. Determine Upsiope Berm Width <br /> 1. Upslope Muftiplier based on percent stope (see Slope Multipler Table) � <br /> 2. On 5lapes >t%Upslope Width = Upslope Muttiplfer (2.6) X System He�ght (2.A) <br /> ��-�—� X �,� ft = (o„j ft <br /> =�.t_._� <br /> � On Slopes <1�, Upstope Width = (0.5 X Absorption Bed Width (1.E)} +5 ft <br /> ( 0.5 X ft ) + 5ft = C^�ft <br /> 4. Choose B.Z or B.3 depending on slope ,, ft <br /> C. Deterrnine Downstope Berm Width <br /> 1. Downstope Muftiplier based on percent slope (see Table): �. � <br /> 2. Downlsope Width = Downslope Multiptier X Sysiem Height <br /> o X , ft = a, ft <br /> 3. Absorption Bed Width + 5 feet = <br /> Q���� ft + 5 = o C� ft <br /> Y <br />