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HomeMy WebLinkAboutSWG93-00582 - SWG Design - 9/22/1993 -47 • ....... . .:. . .GN FORMu- PAGE ONE. _ ..__ �_ ..�. ..� ,}�..... . *wised os z . .� • .--��La 1/S3 A design will be reviewed when 3 copies of each of the following items are submitted: • Completed design form that has been signed and dated Scaled plot plan, including all applicable items on checklist f caled layout sketch, including all applicable items on checklist i �$ ross-section sketch, including all applicable items on checklist j '‘,V� nQl % (0.\-11 0.5 0- i1jNI PARCEL IDENTIFICATION Permit umber suC,Q �- Os a, Designer's Name c O Q& 30V1v\S0tk Applicant' s Name bc\v\_ \/u Prop. Owner's Name yrtS_Mailing Address ► 51; 3'7.,'W0 . A;E Prop. Street Address Ai. S ,,,z_ _ 1 ,tea-&. w.A 9S/55e3.:_e.NC C i t y s tat• Zip C i t y s cat• Z i p Assessor's Parcel No. 3aaay '5-0 'aaaStD, Subdivision Ca.c(- Yvgs-e f y.. (Z'valva-Digit N.amb.r) (N •/Divimlon/Dlook!Z-ot) (6w1 utt 2?... tdh. ..8...r..; APPROV .[-) DESIGN PARAMETERS Initials J J —31 Eil----6 J Date ( '1/73 [15— Designed Vertical Separation Mound Subsurface Pressure Gravity Bed Trench ( gjfi in Septic Tank/Drainfield Specifications n No. Bedrooms Pressure Distribution? 1 / Yes `---' No Daily Flow 3Co G gpd (If yes, proceed. .. ) Septic Tank Capacity 1,;kb() gal 9 ti c r Receiving Spil Type (1-6) .. (-on 1 Ski j� t� /!r?r"Y� / r�l<c 11 Receiving Soil Appl. Rate , S gpd/ft2 Laterals Trench/Bed Bottom Area `—/ ' ft2 Schedule/Class L/O Trench/Bed Width 3 ft Length - 7. 5 ft Lineal Footage /SC ft Diameter t .a_5 in Number 3 Elevation Measurements Separation / ft Orig. Drainfield Area Slope a( • Orifices Final Drainfield Area Slope 3A % Number/Lateral Pair ‘.~j Depth of Downslope Edge of Diameter 31/(C in Trench/Bed from Orig. Grade in Spacing a,', . Manifold Pump Required? ® Yes 0 No Schedule/Class y (If yes, proceed. . . ) Length 10 ft Diameter a in Pump/Siphon Specifications Transport Pipe Difference in Elevation Between Pump Shutoff Schedule/Class 1-7/0and Uppermost Orifice 7 ft Length /0 ft Diameter a in Uppermost Orifice is Va higher, lower Dosing and Pump Chamber than Pump Shutoff # Doses/Day oZ Capacity E Tot. Pres. Head 029, 7c gpm Dose Quantity I gal Calculated Tot. Pres. Bead /C, /S ft Chamber Capacity 30 O gal (Attach Pump Curve) y�J ``b` "`"/ �l_J �C%r end _ n Milk I14 FORD — PAGE TWO r..is.e oana�s3 DESIGN CHECKLISTS +' Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Depth from original grade of 0 Test hole locations © Drainfield orientation following system components: Dand layout 0 Property lines Building stubout El Trench/bed dimensions and 0 Existing and proposed critical distances within a Septic tank lid wells, including layout adjacent properties' El-❑ - Laterals C� D-Box/"T"/"L" location n/ Critical distance lD Trench/Bed bottom measurements to cuts, Septic tank/pump chamber banks, surface water location Trench/Bed top ElLocation and orientation tJ Observation port location 0 Drainrock depth 11„1+111-1 riK' of curtain drain and all f absorption area C Cleanout location El Cover depth components C✓ 0 Manifold placement El Restrictive layer Location and dimension of primary system and Q Orifice placement D Curtain drain reserve area 1-7 Lateral placement, with Observation ports and 0 Buildings distances to edge of bed cleanouts t/ 0 Roads/easements Audible/visual alarm ✓ Sand augmentation ✓ 0 C Driveways/parking North arrow Additional Mound Information DPower/gas/waterlines ~ 17 Scale of drawing shown Upslope and downslope _ _ -_ on scale bar fill width ErReference point location v, Additional Mound Information 0 Settled cap depth at North arrow center and edge of bed ❑ Endslope width C Scale of drawing shown El Overall Sidewall slope on scale bar Overall fill dimensionsMasan nty 1-,,. Health Sety ces pptcn-r p� ed elevat. Initials �( * ) DESIGN APPROVAL Date d The undersigned designer does, does not, waive the regirement to be notified by the installer of the installation and given 48 hours to perform a final inspection prior to cover. altr).-7 y o i 3 s n• .• oZ D 1 Dext• i The undersigned has revie and app ed his design on behalf f Mason County of Health Services. /e/ .. D•........x CAUTION: THIS DESIGN IS ONLY ID IF STAMPED "APPROVED" BY MASON CO. DEPT. OF HEALTH — — ;,:- • P LOT t'LA N 5 S m.TavAK 5� f''f C�e��- Pb•,�d-IS 9' R���v�A 5� 3 P,•ro.t.Cr St frk:.c.To....K) A91c.c sdx' • FL ) I " , 2 i •� �3,4 -ter ztIMP S�tK f10/ N. vic s, k 'Zj 4 Q y � � o p V 4 Mason County l-C; i. :,L..: APPROVE r I . Initials — Date -S 4: 7 / i 4( i_oc,e< 7 ,s A • t v _ -.;2,,, \\ lj v°Pis:$`'%- crti PRoPO5E-A MousE -3 et)RM . VITH C> INOE. oe. SOLIDS pt4Kp Tv settle Ti9 N K A E3oVE -- ��, ( �I _ �0� 9G' E L �VATi ON . i r 1 + � I 0' 10 ' ' ao' 30 'io' A= e.-k 1-ko1- '—, t+ C.A hJ A L PRESSURE DISTRIBUTION DESIGN WORKSHEET AND/OR CHECKLIST Computed by : UNION SALVAGE Joycelyn Johnson Certified Designer Septic Systems East 5080 Highway 106 Union , Washington 98592 Mason Couniy ,.tri Liea,.r; ( 206 ) 898-2255 APPROVE,, Designed for : DAN VU Initials_.___ Street address: Date SITE CONDITIONS : # of Bedrooms - 3 Soil Type - LOAMY SAND I . DESIGN THE DISTRIBUTION NETWORK 1 . Make Preliminary Determination of Trench/Bed Configuration . A . Daily design Flow 360 .00 gals . Daily flow = ( # bedrooms ) X ( flow/bedrooms ) B . Application rate based on soil type = 0 .80 gpd/ft2 C . Required absorption area = 450 .00 ft2 Required absorption area ( ft2 ) = [Daily design flow ( gpd )] / [Application rate ( gpd/ft2 )] D . Selected trench or bed width = 3 .00 lin ft E . Total trench or bed length = 150 .00 lin ft Trench or bed length ( ft ) = [Required area ( ft2 )] / [Selected width ( ft )] 2 . Select a Primary Network Configuration A . Lateral length 50 .00 ft Lat length ft = [Total trench/bed length ( ft ) - 0 .5 ft] / [# of laterals] B . Lateral spacing = 9 .00 ft C . Transport pipe length = 10 .00 ft D . Transport pipe diameter = 2 .00 in E . Manifold length = 18 .00 ft F . Select an orifice spacing for this lateral 3 .00 ft G . Calculate the number of orifices in this lateral 17 .00 oT oritices in this lateral= . [Length of lateral ( ft )] / [Selected orifice spacing ( f t )] • ( ROUND UP TO THE NEXT WHOLE NUMBER ) H : Select an orifice diameter ( 3/16- 3/8 ) 0 .18750 in I . Calculate orifice discharge rate 0 .59 gpm J . Lateral discharge rate for this lateral 9 .97 gpm K . Select an appropriate lateral diameter 1 .25 in L . Class of pipe for laterals is Schedule 40 3 . Design the remainder of the laterals . Let Elev Dif Orifice Lateral # Orifices Orifice Let Let + 2ft Hd Discharge Discharge Per Lateral Spacing Diam Length 1 2 .00 0 .59 9 .97 17 3 .00 1 .25 50 .0 2 2 .00 0 .59 9 .97 17 3 .00 1 .25 50 .0 3 2 .00 0 .59 9 .97 17 3 .00 1 .25 50 .0 4 . Select the Manifold Diameter . A . Calculate the total lateral discharge rate 29 .90 gpm B . Select adequate manifold diameter ( from table) 2 .00 in Mason County De;.l. ( End manifold using Schedule 40 pipe ) .A►PPRO VED II . DESIGN OF THE PRESSURIZATION SYSTEM Date 1 . Determine the Dose Volume A . Dose volume based on soil type 1 . Recommended dosing frequency/day = 4 .00 doses/day 2 . Recommended dose volume = 90 .00 gallons Dose volume ( gal )=Design flow ( gpd ) / Recommended dosing freq/day B . Dose volume based on dose volume/pipe void ratio 1 . If entire network remains full between doses = 0 gal . 2 . If just laterals drain between doses = 81 .90 gal . Required dose volume = ( 7 ) X ( Interior volume of laterals ) 3 . If entire system drains between doses = 85 .05 gal . Required dose = ( 7 ) X ( Interior volume ) + volume + volume volume of laterals manifold trans .line ' C . For desired dose volume , select larger of A or B above 90 .00 gal . 2 . Determine Required Pump/Siphon Discharge Capacity 29 .90 gal . i Required pump discharge = Sum of all discharge rates from capacity all laterals in the system 3 . Calculate the Total Friction Losses in the Network A . Transport Pipe : 0 .15 - Transport pipe is Schedule 40 B . Manifold and laterals: 1 .00 4 . Calculate the Total Elevation lift = 7 .00 ft . Total elevation lift = [Elev . of uppermost lateral] - [Elev . of low water level in the pump chamber] 5 . Determine the Total Dynamic Head. Selected residual pressure : 2 .00 ft . Transport pipe friction losses: + 0 . 15 ft . Manifold and lateral friction losses : + 1 .00 ft . Total elevation lift : + 7 .00 ft . Total Dynamic Head: - 10 .15 ft . 6 . Required Pump Capacity is 29 .90 gpm Total Dynamic Head is WIT ft . °U; nfY De f. pR j Number of bedrooms 3 Initials`: #`'f The required absorption area is: 450 .00 sq ft Date The length of the trench is: 150 .00 ft The width of the trench is: 3 .00 ft The length of the transport pipe is: 10 .00 ft The diameter of the transport pipe is: 2 .00 in The length of the manifold is: 18 .00 ft The diameter of the manifold is : 2 .00 in The total volume of the laterals is 11 .70 gals The volume of the manifold pipe is 3 . 15 gals The volume of the transport pipe is 1 .75 gals Dose vol based on vol/pipe void ratio: 85 .05 gals Dose volume based on soil type is: 90 .00 gals The required dose volume is 90 .00 gals The total discharge for the laterals is: 29 .90 gals The friction loss in the transport pipe is: 0 .15 ft head The total friction loss for the laterals is 0 .23 ft head The total elevation lift is: 7 .00 ft head The total dynamic head is: 10 .15 ft head