Loading...
HomeMy WebLinkAboutStorm Drainage Analysis - COM Engineering / Geo-Tech Reports - 7/31/1990 Marley L. Young, P.E Phone 427-9670 Ext. 450 Director CrArea Code(206) MD A V DEPARTMENT OF PUBLIC WORKS S N COURTHOUSE ANNEX II 411 NORTH 5TH STREET OP.O. BOX 357 SHELTON,WASHINGTON 98584 N Y July 31 , 1990 Craig T. Baldwin Re: Storm Drainage Analysis pac-Tech Engineering, Inc. for k:.itsap Way, Suite 4 Belfair Valley plaza Bremerton , Washington 98524 Dear Craig: our Storm Drainage Analysis Revision dated July I have reviewed y thing appears to 18, 1990, on the Belfair Valley plaza. Every I haven 't meet the criteria we esctbwithed at DorisDorisSma11 ofur last mFisheries, but if been able to make our findings, I am satisfied. she concurs with y At this time, the road design has not been finalized, per George Fullerton of our office. Sincerely , ELDEN L. REED support Engineer Et�F s e r cc: General Services Wendy Lev-Van Eaton MASON COUNTY DEPARTMENT of GENERAL SERVICES Mason County Bldg. III 426 W.Cedar P.O. Box 186 Shelton, Washington 98584 (206) 427-9670 buildin environmental health maintenance landfill parks&recreation fair/convention center planning sewer&water g � A3.:a �?:3r3�-. J�'. _'- �?=3��✓�'= ' ilpec'^s3: y 5=3T_� agencies tli3P. _ 7?J _3tl:l�:.y =e�3: to^. - il! I_ mincer�=:�• e:.aay as =.a Sucre ^e `3n 1e= _ iasc^. FINAL STORM DRAINAGE ANALYSIS FOR: BELFAIR VALLEY PLAZA CLIENT: TOLLEFSON DAVIDSON PROPERTIES 606 - 110TH Avenue N.E. , Suite 206 Bellevue, WA 98004 ( 206) 455-2848 Attn: Barclay Tollefson Phil Davidson PREPARED BY: Pac-Tech Engineering, Inc . 3721 Kitsap Way, Suite 4 Bremerton, WA 98312 ( 206) 377-2053 JOB NO. 9633 K"HL q � y • OS W 01STEaE° JANUARY 3 , 1990 updated 2/9/90 /-'rV. 7/J v/1 0 TABLE OF CONTENTS INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UPSTREAM ANALYSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DOWNSTREAM ANALYSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DESIGN CALCULATIONS : A. PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 B . UNDEVELOPED CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . 4 C . DEVELOPED CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .PG . 6 2 . Pond Volume Requirements D. ALLOWABLE DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 E . DETENTION POND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F . ORIFICE SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G . PIPE SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H . RISER CAPACITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LIST OF FIGURES FIGURE 1 - VICINITY MAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIGURE 2 - EXISTING CONDITIONS @ AR I . . . . . . . . . . . . . . . . . . . . . . .PG . 28 FIGURE 3 - EXISTING CONDITIONS @ AR II . . . . . . . . . . . . . . . . . . . . . . FIGURE 4 - RUNOFF FACTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . PG . 33 FIGURE 5 - OVERLAND FLOW VELOCITY CHART . . . . . . . . . . . . . . . . . . . . . FIGURE 6 - RAINFALL INTENSITY CHART . . . . . . . . . . . . . . . . . . . . . . . . . FIGURE 7 - DEVELOPED CONDITIONS/CATCHMENT AREAS . . . . . , , , . . . .PG . 33 FIGURE 8 - DOWNSTREAM CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . INTRODUCTION: The Belfair Retail Center project site is located in Belfair , Washington on a 8 . 364 acre site lying northwest of and adjacent to State Route 3 and east of the West Belfair Valley Road. The site is situate in the Northwest Quarter of Section 29 , Township 23 North, Range 1 West , Willamette Meridian, in North Mason County, Washington (See fig. 1 ) . The project site consists four parcels of land, one of which is a prescriptive use for the Old County Road to Allen ( this portion of the site will be dedicated to Mason County for a future county road) . The site has been cleared and is presently covered with patches of grass and Scotchbroom. Slopes on-site range from 2 to 5 percent to the northwest (See Fig. 2 ) . For the purpose of this report , the off-site basin AR II = 2 . 52 acres) . Contributing runoff will be considered as on-site (See Fig. 3) . Runoff from the project site (AR I = 8 . 364 acres) discharges at two locations; via an existing pond and 12 inch diameter culvert pipe under Roy Boad Road to the north; and as overland sheet flow to the west-northwest to the south side of Roy Boad Road, with some points of concentrated runoff due to erosion of the cleared ground. The existing gravel road along the west property line of the site intercepts the runoff to the west and either directs it to the north to Roy Boad Road or allows ponding to occur along the west property line . No runoff was observed leaving the site to the west during a recent 10 year storm event incurred in .January 1990 . For the purpose of this report , it will be assumed that all of the runoff from the site discharges to the northwest and that no on- site runoff discharges via the existing pond and culvert . This assumption will maintain the existing 12 inch culvert under Roy Boad Road to convey only stormwater from the existing roadside ditches and will improve existing downstream conditions to the north. The proposed improvements will consist of : 94 , 272 total square feet of market, drug store, shops and building pads; 244 , 546 square feet of parking area, driveways , sidewalks , and a future County Road, with intersection, along the west property line; 25 , 700 square feet landscaping; two commercial road approaches with illumination along State Route 3 , and utility improvements including water , sanitary drainfield, and an off-site storm drainage detention facility ( See Fig 7) . page 1 The proposed storm drainage detention facility will be located off-site to the north of the project site and will discharge to a wetland swale to the west of West Belfair Valley Road (Old Belfair Highway) and to the north of North- Shore Road . This diversion of stormwater runoff to a discharge point further to the north will help in reducing the existing flooding that occurs to the west of the project site near the Exxon Station and the Thriftway store. UPSTREAM ANALYSIS An upstream investigation during the recent heavy rainfall revealed off-site runoff (AR II = 2 . 52 acres) contributing to the project site from the southeast ( See Fig. 3 ) . State Route 3 is super- elevated along the uphill (southeast) side of the project site, and therefore discharges the entire paved width of roadway within the super to the site. The super also allows runoff from a portion of Belfair Center located to the southeast of the site to sheet flow across SR 3 . This runoff is intended to discharge to the southerly roadside ditch at SR 3 , but existing grades do not allow this to occur . The Ashord House Apartments located uphill form Belfair Center intercepts and diverts any potential off--site runoff to the west away from the project site. The remainder of SR 3 along the southerly border of the site is a crowned road section and only contributes half of the paved width of roadway. The NAPA Auto Parts located to the east and adjacent to the project site discharges directly along the adjoining property line via the erosion ditch at the southeast corner of the project site . The off-site stormwater runoff mentioned above will be considered as on-site in the determination of pond volumes and allowable discharge levels . (See page 9 of this report ) . DOWNSTREAM ANALYSIS A downstream investigation of the project site reveals that the majority of the runoff from the site presently enters the existing pond along the north property line and discharges to a swale north of Roy Boad Road via an existing 12 inch diameter culvert pipe, which then continues to the north and west to the Union River . The remainder of the site discharges to the west along the south side of Roy Boad Road to a ditch along the east side of the West Belfair Valley Road to a wetland which is connected via an equalizing culvert to another wetland located between the Prairie Market and the Thriftway store. This wetland also discharges to the Union River, which ultimately discharges to Lynch cove at the head of Hood Canal (See Fig . 8 ) . page 2 A. PARAMETERS 1 . A 25 year Rational Method storm analysis is required by the Mason County Public Works Department for storm detention systems . 2 . Rainfall intensities are from the Mayfield Rainfall Chart ( See fig. 6) . 3 . Runoff coefficients will be as follows Crexst = Existing on-site conditions = 0 . 05 ( @ woods & forest ) Crfut = Developed on-site conditions ( to be determined) 4 . The Rational Method will be utilized, Q = CIA where : Q = Runoff Flow, Cubic Feet/Second (C .F. S . ) C = Runoff Coefficient I = Rainfall Intensity, Inches/Hour ( IN. /HR. ) A = Contributing Area, Acres (AC . ) 5 . Using Kitsap County detention system equations @ 25 year design storm, with mutiple ( 3 ) orifice with head outlet type : T = Peak Storage Time = -25 + ( 3712/Qo) 112 (minutes) V25 = Maximum Storage Volume = 3920 T - 26 . 4 Qo T (Cu.Ft . /AC . ) T+25 @ Qo = Qadjusted/ AdevCfut Total volume required = V25*Adev*Cfut PAGE 3 FOR: +� AF jr-9 JOB NU. Engineers /Planners /Surveyors 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 �^ r PAGE Seattle 623-5736/Gig Harbor 851-3033 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188 l 243-7112 PREPARED BY: ul DATE: 2 D 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: T �AA e>72 I LD L)4, J l a t52�5 �. �TZ 2,) = Z - 10`50 )oso = �50 9 � FOR: , �7�7 JOB NO. Engineers /Planners /Surveyors �{T L I 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 PAGE Seattle 623-5736/Gig Harbor 851-3033 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98 188/243-7112 PREPARED BY: 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: fz- " � � S (PGO 0C-�+ -r D J 131� Y`LO0 xD /4� j"Mmat I ECH FOR: ��� JOB N0. Engineers /Planners /Surveyors � �' qU9)2 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 PAGE Seattle 623-5736/Gig Harbor 851-3033 OP OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188 l 243-7112 PREPARED BY: DATE: 2 D 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: 1 nq 10e7L"2A-6(L-T NOTE: THE PRE-DEVELOPED 25-YEAR PEAK FLOW RELAESE RATE FOR THIS BASIN, WHEN USING THE SCS TYPE 1A RAINFALL DISTRIBUTION IS 1 . 59 CFS. DURING THE MEETING WITH MASON COUNTY DEPARTMENT OF PUBLIC WORKS (HELD ON 12 APRIL 1990) , THIS RELEASE RATE WAS AGREED UPON TO SERVE AS ADJUSTED FLOW IN DETERMINING POND VOLUMES AND TO SERVE AS THE ALLOWABLE RELEASE FROM THE POND SINCE NO BYPASS OR OFF-SITE AREA IS ASSOCIATED WITH THE REVISED ANALYSIS . SEE SECTION D OF THIS REPORT FOR THE SCS ANALYSIS . ro, r-aL w I FOR: 4j1Z2F'-A_. J/v'J3 O1B/,N�O. 4s� ` I Engineers / Planners /Surveyors C'� PAGE 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 Seattle 623-5736/Gig Harbor 851-3033 7 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188 l 243-7112 PREPARED BY: \` DATE: Zc� Gf 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: �Qo DA-0,A NOTE: USING THE ALLOWABLE RELEASE RATE OF 1 . 59 CFS REQUESTED BY MASON COUNTY DEPARTMENT OF PUBLIC WORKS, MULTIPLE ( 3) ORIFICES WILL EACH DISCHARGE 1/3 OF THE ALLOWABLE RATE, BEING 0. 53 CFS. THE CRITERIA FOR DISCHARGE REQEUSTED BY THE FISHERIES DEPARTMENT REQUIRES 50 PERCENT OF THE 2-YEAR, 24 HOUR PRE-DEVELOPED FLOW BE MAINTAINED, WHICH IS 0 . 455 CFS. SINCE THE ALLOWABLE RELEASE RATES REQUESTED BY MASON COUNTY AND FISHERIES ARE WITHIN 16 PERCENT, THE RATE OF 1 . 59 CFS WILL BE UTILIZED AS A COMPROMISE BETWEEN THE RATIONAL METHOD AND THE SCS TYPE 1A RAINFALL DISTRIBUTION METHOD. SEE SECTION D OF THIS REPORT FOR THE SCS ANALYSIS . L4 + 2 cam , � � HOAK � c H FOR: / JOB NO. Engineers /Planners / Surveyors PAGE 2601 S.35th-Suite 200/Tacoma WA 98409/473-4491 Seattle 623-5736/Gig Harbor 851-3033 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188/243-7112 PREPARED BY' �� DATE: ZcJ 3721 Kitsap Way-Suite 4 I Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: NOTE: THE WSDOT REVIEW OF THE ORIGINAL STORM DRAINAGE SYSTEM SUBMITTED MENTIONED THAT THE DETENTION POND VOLUME SHOULD BE INCREASED BY 10 , 000 CU.FT. THIS INCREASE WOULD REQUIRE A REVISED POND VOLUME OF APPROXIMATELY 27, 600 CU.FT. SINCE THE VOLUME HAS INCREASED FROM 17 ,590 CU.FT. TO 25, 673 CU.FT. , THE CONCERNS OF WSDOT SHOULD BE EFFECTIVELY MITIGATED. C _TECH FOR: JOB NO. Rua,r fi__aEngineers /Planners /Surveyors PAGE 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 Seattle 623-5736/Gig Harbor 851-3033 OF 6100 SouthcenterBlvd. -Suite 100/Seattle, WA 98188/243-7112 PREPARED BY: �� DATE: L0 Z� 40 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: IN ORDER TO EFFECTIVELY USE THE S . C . S . TYPE-1A RAINFALL DISTRIBUTION FOR ALLOWABLE DISCHARGE AND COMPARE IT TO THE RATION METHOD USED FOR DETENTION VOLUME REQUIREMENTS , THE OFFSITE AREA (AR II = 2 . 52 AC . ) THAT ENTERS THE PROJECT SITE WILL BE ASSUMED AS ON— SITE AREA. THIS AREA IS PRESENTLY IMPERVIOUS WITH A CURVE NUMBER OF 98 . 0 FOR TYPE A SOILS ( SEE TABLE 1 BELOW) . THE ON—SITE AREA (AR I = 8 . 4 AC . ) WILL BE ASSUMED AT A PERVOIUS FORESTED CONDITION RATHER THAN THE PRESENT CONDITION OF BARE GROUND, AND WILL HAVE A CURVE NUMBER OF 42 . 0 FOR TYPE A SOILS . SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS(Published by SCS in 1982) Runoff curve numbers for selected agricultural,suburban and urban land use for Type 1A rainfall distribution,24-hour storm duration. CURVE NUMBERS BY HYDROLOGIC SOIL GROUP LAND USE DESCRIPTION A 8 C D Cultivated land(1): winter condition 86 91 94 95 Mountain open areas: low growing brush and grasslands 74 82 89 92 Meadow or pasture: 65 78 85 89 _IWood or forest land: undisturbed _._�__ _ 12.., 64 76 81 Wood or forest land: young second growth or brush 55 72 81 86 Orchard: with cover crop 81 88 92 94 Open spaces,lawns,parks,golf courses,cemeteries, landscaping. good condition: grass cover on 75% or more of the area 68 80 86 90 fair condition: grass cover on 50% to 75%of the area 77 85 90 92 Gravel roads and parking lots 76 85 89 91 Dirt roads and parking lots 72 82 87 89 Impervious surfaces,pavement roofs,etc. 98 98 98 98 O pn"wafer bodfe "" " '""'lakes,wetlands, - pe ponds,etc.'""""" 100 lo0 100 100 Single Family Residential(2) Dwelling Unft/Gross Acre %Impervious(3) 1.0 DU/GA 15 Separate curve number 1.5 DU/GA 20 shall be selected 2.0 DU/GA 25 for pervious and 2.5 DU/GA 30 Impervious portion 3.0 DU/GA 34 of the site or basin 3.5 DU/GA 38 4.0 DU/GA 42 4.5 DU/GA 46 5.0 DU/GA 48 5.5 DU/GA 50 6.0 DU/GA 52 6.5 DU/GA 54 7.0 DU/GA 56 Planned unit developments, %Impervious condominiums,apartments, must be computed commercial business and industrial areas. (1) For a more detailed description of agricultural land use curve numbers refer to National Engineering Handbook,Section 4,Hydrology,Chapter 9,August 1972. (2) Assumes roof and driveway runoff Is directed Into street/storm system. (3) The remaining pervious areas(lawn)are considered to be In good condition for these curve numbers. PAL—LECH FOR: 1 JOB NO. Engineers /Planners / Surveyors �v lt� PAGE 2601 S.35th-Suite 200/Tacoma, WA 96409/473-4491 Seattle 623-5736/Gig Harbor 851-3033 t D OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188/243-7112 PREPARED BY: DATE: Z!� f�D 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: SPECIFY STORM OPTION: -�? � '2 1 S.C.S. TYPE-1A RAINFALL DISTRIBUTION ENTER: FREQ(YEAR) , DURATION(HOUR) , PRECIP( INCHES) 25,24,6.0 ---------------------------------------------------------------------- ******************** S.C.S. TYPE-1A DISTRIBUTION ******************** ********* 25-YEAR 24-HOUR STORM **** 6.00" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 8.364,42, 2 .52,98, 104. 16 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN 8.4 42.0 2 .5 98.0 104 . 2 EAI � C F -PEAK(H RS) VOL(CU-F T) 8.00 70451 d9[ ]filename[ .ext] FOR STORAGE OF COMPUTED HYDROGRAPH: THE PEAK FLOW FOR A 25 YEAR, 24 HOUR STORM EVENT FOR THE TWO AREAS CONSIDERED AS ONE BASIN IS 1 . 59 CFS . THIS VALUE CAN BE UTILIZED AS THE ALLOWABLE DISCHARGE RATE FROM THE DETENTION POND SINCE THE DETENTION VOLUME IS ALSO BASED UPON A COMBINED BASIN APPROACH WITH AN EXISTING RUNOFF COEFFICIENT OF 0 . 25 ( SEE PAGE 4 ) . ✓��� ������ FOR: JOB NO. Engineers / Planners /Surveyors 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 PAGE Seattle 623-5736/Gig Harbor 851-3033 11 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188/243-7112 PREPARED BY: DATE: Ze, 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: q3 10 - T 1 r tr nH P AA)L 0 X 13 -1 4-2 = 2 4c M jr 11 FOR: JOB NO. Engineers / Planners / Surveyors j�—�P PAGE ;7 2601 S.35th-Suite 200/Tacoma, WA 98409/473-449 1 Seattle 623-5736/Gig Harbor 851-3033 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188/243-7112 PREPARED BY: `` -_z DATE: 3721 tGtsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: AS MENTIONED PREVIOUSLY, THE ALLOWABLE RELEASE RATE FROM THE PROJECT SITE WILL BE 1.59 CFS. MULTIPLE (3) ORIFICE DISCHARGE WILL BE UTILIZED WITH EACH OF THE ORIFICES PASSING 1/3 OF THE ALLOWABLE RELEASE RATE. ir— to M �, _ •, OUTLET INLET VV 'r Z � •. � . r 54" LAIN /, ! a diameter �: FOR: JUti NO. Engineers /Planners /Surveyors Co�T►? PAGE 2601 S.35th-Suite 200/Tacoma, WA 98409/4 73-449 1 Seatle 623-5736/Gig Harbor 851-3033 OF 6100 Southcenter Blvd. -Suite 100/Seattle, WA 98188 l 243-7112 PREPARED BY: S DATE: Zct ClD 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: d 1 z D -17 TT- z Tr 2. �q- 7r- -rr ���TEC� FOR: JOB NO. r Engineers /Planners /Surveyors ► PAGE 2601 S.35th-Suite 200/Tacoma, WA 98409/473-4491 Seattle 623-5736/Gig Harbor 851-3033 OF 6100 Southcenter Blvd. -Suite 100/Seatt/e, WA 98188/243-7112 PREPARED BY ` DATE: 2c, C�a 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: (770- 1I Iz- AJt4,L. �o C�L� (� OLD �- 1�4?- FA? KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL FIGURE 4.3.5D HEADWATER DEPTH FOR CORRUGATED PIPE CULVERTS WANLET CONTROL r 180 lo,000 168 8.000 EXAMPLE 156 7.6,000 0.36 inches(3.0 test) 6. 5,000 0.66cfs /3` 144 4,000 6' 1 I rtw• fee 5 ENTRANCE TYPE 132 3,000 —5 (feel) (1) 1.8 5.4 5. 6. HEADWALL PLAN 120 W (2) 2.1 6.3 5. 2,000 •+ a (3) 2.2 6.6 a' 108 d ,I a t s0 in feet 3• 4. 96 1,000 l 1 800 ; 3. 84 uuli 600 500 1 ---- - 400 MITERED TO 72 2 2. CONFORM w 300 / — - ---- TO SLOPE Z rn / SECTION 0 200 Z 60 +�W N 1.5 Z I.5 / W 0 54 v I' W �- W 100 IX .r► /' Aa _ W 48 cc 80 �//1/� ,� p ` 60 PROJECTING 42 /�N 50 F - 1.0 -1.0 SECTION 40 a Z36 3 ENTRANCE W D SCALE w TYPE �Qry, ~ 33 �o a.(1) M.ad.all 0 .8 30 (2) mitered to conform aW 8 to slope 6 __ — 0 27 ' to (3) Projecting a .7 .7 0 8 r, 24 6 .7 f 5 'to use scale(2)or(3) project 21 4 horizontally to scale (1),then -- 6 — il us• •troight inclined line through •6 3 0 and 0 scabs, or reverse as 6 8 illustrated. 2 • 15 5 L .5 I.0 .5 12 A 1 5.19 I/90 'f o X w Q rr O Ui w � �� I �NI �� �I �1 �� ��1 �) N � In 03 CD o73 o W cr o z o �� Q1 NI I I i W N +1 IL o \T v1b x I .J� z �- � 1 — _ N I'�_ �• �I a �� '�.,I y , N1 z. _ Li I > a LL, S a ! . ��; 1 I � N. I. �) T-I Qa. C11 M cn IW I O � I N � I FCU-L U. ' 1 (n lr W V N ( r Z w c I r z �i 0 4. ul Cc W. ,�. o a -� o - �i a`i L4.. w 0 �i I ; gal ±R/M ,�n.M1.Y r i..� � �1 �WMw i w�.Jr r ..�__.`�.__. I , I ! I •'• w :U 10 A \ :L 4J r O (r ui Z �" N I I O c-) w w 30 Er tn I a3 c— o I cr LU w ' 11 I I I J I� 1 w , G w 2 VA I F-� I i� Z; I� o q00i w I C� Q -- Ilia i - ICI ; � ; z Is` I I a s QI w a. cr o N z w U. �r 1 O Q V vi 3-4 af i O Occ • O w Z 2 tfJ CO s l, - + 0 4 C' 0S I c Vr L Q Z : 01 LwUI _ �_ ► a � cc O O 1 N T I� 11 1.6 1011 I v � I cc ui cc a.CL 0 WC) � V, � z I w W Iw 0o cri LO a ,9 I ac I z o N co Q IQ Few l a Z U. H �, O V N J ►— S � U I l\ Z W "~ W r S � u Z z N iU F �- z Z N O o a CAI k j `r o z ! t►.ci 1 I 1 I I 1 ! I 1 I I I '�! � aU. i Izi 2.1 j V( _ �u I cc U W I I I I /V, \ Q I W 1 LLJ I c •ww��� ++ '+ YuwYi. Yi ram • • w.. r MHYDRAUL I C CALCULATOR Version 1 . 10 '" S TM -Circular Rectangular Trapazoidal V Bottom Irregular TM TM TM '"1 ) Flow TM IM 2 ) Slope .r-- "q r„ '4w -•f..� _ TM L ,� �, . � u,: 'M3 ) Diameter . �' � . j ;;.��." t: TM 'M4 ) Depth TM tM TM rM Choice <0> ? 4 3 TM TM Enter Variables Solution TM The Flow in MGD is --------> . 450T" fM The Depth in feet i 0 s ------> . T" TM Flow in MGD 1 . 4503 The Diam in feet is -------> 1 . O0000TM �M Diam in feet 1 The Mannings n value is ---> 0 . 024000TM " Mannings n value . 024 The Velocity in FPS is ----> 3 . 371TM M Slope in ft/ft . 0147 The Slope is --------------> 0 . 01470000T" 7M " Iterating Please Wait ,M M TM M TM M Press any key when ready i M H Y D R A U L I C C A L C U L A T O R Version 1 . 10 '" 3 TM "Circular Rectangular Trapazoidal V Bottom Irregular TM M TM "I ) Flow TM "2 ) Slope TM '3 ) Diameter TM X "4 ) Depth TM M Choice <0> ? 4 M Enter Variables Solution M The Flow in MGD is --------> 3 . 555'" M The Depth in feet is ------> 0 . 840'" • Flow in MGD 3 . 555 The Diam in feet is -------> 1 . 25OTM M Diam in feet 1 . 25 The Mannings n value is ---> 0 . 012000'M M Mannings n value . 012 The Velocity in FPS is ----> 6 . 271'M M Slope in ft/ft . 01 The Slope is --------------> O . O1000000rM M Iterating Please Wait tM M 'M MPress any key when ready IM i I e TM 'TM H Y D R A U L I C C A L C U L A T O R Version 1 .10 i 15 TM 'T"Circular Rectangular Trap azoidal V Bottom Irregular TM :TM O/TM T"1) Flow I(/ TM ;T"2) Slope ��(, / TM 'T"3) Diameter .. ;. -x .N,..,o�.,�.,,��a,�,.C� ��-......,,., n - •-,.,-�......-.._:�� _....,, M ,.. T" LA 4) Depth �.. �'✓;`. .,�� ���TM. TM TM TM Choice <0> ? 4 - - Solution TM Enter Variables The Flow in MGD is --------> 5 . 80TM The Depth in feet is ------> 1 . 13'" The Diam in feet is -------> 1 . 25TM Flow in (MGD) 5 . 805 Diam in feet 1 . 25 The Mannings n value is ---> 0 . 012000'" The Velocity in FPS is ----> 7 . 70TN Depth in feet 1 . 13 > 0 . 01.444665TM . 012 The Slope is -------------- Mannings n value TM TM TM Press any key when ready e TM TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 B TM T""Circular Rectangular Trapazoidal V Bottom Irregular TM TM TM T"1) Flow TM TM2) Slope T"3) Diameter � .,.r- ,� 12 f� ��G I'� (.�1.)Q �.Z��. A rM4) Depth { _ T„ TM TM Choice <0> ? 4 B solution TM TM Enter Variables ---> 2 .763TM T„ The Flow ill MGD is - --> 0.53OT" T„ The Depth in feet is ------> 1 .000T" TM Flow in MGD 2 .763 The Diam in feet is -------> 0� 2000T" TM Diam in feet 1 The Mannings n value is _--> 10. 112TM T" Mannings n value .012 The Velocity in FPS is ----> 0 Q4 92 - - OT" Slope in n val .0429 The Slope is ----------- T„ TM TM Iterating Please Wait T" T„ TM TM TM TM Press any key when ready u e TM TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 ^ TM T13"Circular Rectangular Trapazoidal V Bottom Irregular TM TM TM TM'1 ) Flow TM TM2) Slope , T"3) Diameter .,_jfl...., TM4) Depth ..._l/C,� l�•. ../ TN TM CJ TM TM Choice <0> ? 4 B Solution TM TM Enter Variables ---> 2 .8 07TM TM The Flow in MGD is ----- The Depth in feet is ------> 1 . 000T" TM 2 . 807 The Diam in feet is -------> 1 .000T" T" Flow in MGD T" TM Diam in feet 1 The Mannings n Value is _--> 0.0.E 000 TM Mannings n value .012 The Velocity in-FPS-is-_---> 9.595,M The Slope is - --> 0.-03500000'"_ T" Slope in ft/ft _ .035 �� 'ircular Rectangular Trapazoidal V Bottom Irregular T" 7'M Flow ��/ TM T" Slope Diameter Depth Choice <0> ? 4 TM Enter Variables Solution T" The Flow in MGD is -- -----> 3 . 174T" The Depth in feet is ------> 0 . 620" Flow in MGD 3 . 1739 The Diam in feet is -------> 1 . 000TM Diam in feet 1 The Mannings n value is ---> 0 01zDD Mannings n value . 012 The Velocity in FPS is ----> 9 . 599T" Slope in ft/ft . 0325 The Slope is --------------> 0 . 03250000'" TM Iterating Please Wait TM TM Press any key when ready TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 TM ircular Rectangular Trapazoidal V Bottom Irregular '" TM TM ) Flow �-+-r-*m•+n o'^;^/, - yy�' �r,.R.. Q )_TM Slope TM T ) Diameter 1`/, y�11�--/7 �s "�` (,� y(� 2,< TM ) Depth iM TM Choice <0> ? 4 Enter Variables Solution '" The Flow in MGD is --------> 3 . 439T" The Depth in feet is ------> 0 . 680'" Flow in MGD 3 . 439 The Diam in feet is -------> 1 . 000TM Diam in feet 1 The Mannings n value is ---> 0 . 0120QQ7" Mannings n value . 012 The Velocity in FPS is ----> 9 . 354TM Slope in ft/ft . 03 The Slope is --------------> 0 . 03000000'" TM Iterating Please Wait 1M TM TM Press any key when ready N HYDRAUL I C CALCULATOR Version 1 . 10 TM ;ircular Rectangular Trapazoidal V Bottom Irregular TM TM Flow �2! TM ITM Slope '] /� ` f Diameter I _= ��•s �. "�#A TM Depth - Depth ' "� TM Choice <O> ? 4 TM Solution TM Enter Variables The Flow in MGD is --------> 9 . 095TM The Depth in feet is ------> 1 . 26OTM Flow in MGD 9 . 095 The Diam in feet is -------> 1 . 500T11 Diam in feet 1 . 5 The Mannings n value is ---> 0 . 0140001M Mannings n value . 014 The Velocity in FPS is --> Q 879TM Slope in ft/ft . 02 The Slope is ----------- --> 0 . 0 000000_TM TM Iterating Please Wait TM TM Press any key when ready TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 TM ircular Rectangular Trapazoidal V Bottom Irregular TM TM TM Flow T„ Slope T. Diameter br.e- 1<*:.+"^"'"''+'+1."'pt!'.'. .)lY4•...• rw+ / - ' A.•.v-r:yr-•- 1�+�•.{ ' TM Depth ,. TM TM Choice <O> ? 4 Enter Variables Solution 'M The Flow in MGD is --------> 9 . 378`M The Depth in feet is ------> 1 . 370'M Flow in MGD 9 . 378 The Diam in feet is -------> 1 . 75OTM Diam in feet 1 . 75 The Mannings n value is ---> 0 . 016000TM_ Mannings n value . 016 The Velocity in FPS is ----> 7 . 181TM Slope in ft/ft . 014 The Slope is --------------> 0 . 01400000TM Iterating Please Wait TM TM TM TM Press any key when ready I HYDRAUL I C CALCULATOR Version 1 . 10 TM Circular Rectangular Trapazoidal V Bottom Irregular TM TM 1 ) Flow ! 'M 2 ) Slope TM 3 ) Diameter t h '' " 1 1 .. "''`4'' M 4 ) De l TM Choice <0> ? 4 TM Enter Variables Solution TM The Flow in MGD is --- ---> 0.712TM The Depth in feet is ------> 0 . 390T" Flow in MGD 0 . 7121 The Diam in feet is -------> 1 . 000TM Diam in feet 1 The Mannings n value is ---> Q1-Q24000'M Mannings n value . 024 The Velocity in FPS is ----> 3 . 885'M Slope in ft/ft . 033 The Slope is --------------> 0 . 03300000TM Iterating Please Wait TM TM TM Press any key when ready TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 TM circular Rectangular Trapazoidal V Bottom Irregular TM TM 1 ) Flow TM Z ) Slope `M : TR) ater 77 1 Depth � .Choice <0> ? 4 TM TM Enter Variables Solution TM The Flow in MGD is --------> 1 . 271iTM The Depth in feet is ------> 0 . 6301TM Flow in MGD 1 . 271 The Diam in feet is -------> 1 . 00oiTM Diam in feet 1 The Mannings n value is ---> 0 . 012000.TM Mannings n value . 012 The Velocity in FPS is ----> 3 . 77211M*' Slope in ft/ft . 005 The Slope is --------------> 0 . 00500000TM -- Iterating Please Wait T„ TM Press any key when ready TM :TM H Y D R AUL I C CALCULATOR Version 1 . 10 TM TM �T"Circular Rectangular Trapazoidal V Bottom Irregular TM TM A 2 TM TM1 ) Flow *M 'T"2) Slope TM3) DiameterT TN4 Depth W _.._ TM TM TM .TM Choice <0> ? 4 Enter Variables Solution TM The Flow in MGD is --------> 1 . 726T" The Depth in feet is ------> 0 . 550T" Flow in MGD 1 . 7259 The Diam in feet is -------> 1 . 000T" Diam in feet 1 The Mannings n value is ---> 0 . 0`12000TM Mannings n value . 012 The Velocity in FPS is ----> 6 . 032T" Slope in ft/ft . 0142 The Slope is --------------> 0 . 01420000T" Iterating Please Wait T" TM Press any key when ready u e TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 TM 7M •,T"Circular Rectangular Trapazoidal V Bottom Irregular TM TM TM T111 ) Flow iN TM2 Slope / 77 .TM3) Diameter3 <. ' / � „_ � � ... _•.. '� _'"__ A- TM TM4) Depth 111//% TM TM TM TM Choice <0> ? 4. Enter Variables Solution TM The Flow in MGD is --------> 10 . 812T" The Depth in feet is ------> 1 . 10OTM Flow in MGD 10 . 8125 The Diam in feet is -------> 1 . 750T" Diam in feet 1 . 75 The Mannings n value is ---> 0 . 016000TM Mannings n value . 016 The Velocity in FPS is ----> 10 . 5 Slope in ft/ft . 0326 The Slope is ---------- --> 0 . 03260000T" TM Iterating Please Wait TM TM Press any key when ready u TM e TM H Y D R A U L I C C A L C U L A T O R Version 1 . 10 • B I r r e u l a r TM T"Circular Rectangular Trapazoidal V Bottom g TM TM TM TM T"1 ) Flow T"2) Slope p. TM TM3) Diameter TM 4) Depth 7M TM Enter Variables Solution TM The Flow in MGD is --------> 11 . 911" The Depth in feet is ------> 1 . 58'" Flow in (MGD) 11 . 906 The Diam in feet is -------> 1 . 75'" Diam in feet 1 . 75 The Mannings n value is ---> 0 . 0160()OT" Deoth in feet 1 . 58 The Velocity in FPS is ----> 8 . ot-'- , 2 s� H Y D R A U L I C C A L C U L A T O R Version 1 . 10 TM S 'Circular Rectangular Trapazoidal V Bottom Irregular TM TM ^ TM '1 ) Flow TM '2 ) Slope TM 3 ) Diameter x ��,- A TM 4 ) Depth C�#� -� 4�OND �AN�IVL.�R Z''I � ` TM Choice <0> ? 4 TM Enter Variables Solution TM The Flow in MGD is --------> 11 . 096TM The Depth in feet is ------> 1 . 260TM Flow in MGD 11 . 096 The Diam in feet is -------> 1 . 750T11 Diam in feet 1 . 75 The Mannings n value is ---> 0 . 016000TM Mannings n value . 016 The Velocity in FPS is ----> 9 . 259TM Slope in ft/ft . 024 The Slope is --------------> 0 . 02400000TM TM Iterating. Please Wait TM Circular Rectangular Trapazoidal V Bottom Irregular TM TM TM 1 ) Flow TM 2 ) Slope TM 3) Diameter .<_, 4 ) Depth GOUTy- - MA%A"O r—*( TO SY AGIE, TM TM Choice <0> ? 2 TM Enter Variables Solution TM The Flow in MGD is --------> 11 . 91TM The Depth in feet is ------> 2 . 00TM Flow in (MGD) 11 . 906 The Diam in feet is -------> 2 . 00TM Diam in feet 2 The Mannings n value is ---> 0 . 016000TM Depth in feet 2 The Velocity in FPS is ----> 5 . 86TM Mannings n value . 016 The Slope is --------------> 0 . 01004126TM TM TM TM Press any key when ready TM . 11 11�ww�w�—wwl�w--mow Tiff, El mono �I�w�w��w�r�w��w�w►arw�w►t,.Iw�MUMMMS ���w��w�arw.�►.r��tJ�w�w� • rm wwo ENO w�w�ww.ww.ww�www•i—•�w�v�.ruw��w�w•w.e.•ww w—�w�w—...��ww...ir��•w..rJt■iw�ww�wrww... Mw�•�.�.�w1w-..��wl"Jrw.J��.w�www.l•.�ww— w•.rra.w�ww.w.�=w��•r.��ww.��ww.w�w.a�w w w —�•����.w..w w►i��a�r�•n.ww�w�.yw•—ww— w�—we��uw w w nr i�r.r.iw r��i.►aa•���^��w w w� �w•wwwolwwwr��ri��w�ru.�•ww�- �www� ��w���1�•��ww��.�ir.swr�w�Iw��,1�1��ww����•�.������.�.�. maw...•..�.�ws������www .��w—w—.wtw��.w.7./..••..jwww�:t•.w�w■.w.iww�w.�ww— • i ��.w�www•w�1�0iiiili�r��w�rlr+ •ww�ww� ��ww��wwrww��rri�rrrii��w�ra���r�s•w����www� �t_�wew•�r.�aiii�u.w.����w •.Iw��w�w���. — w��r.w—war--www.,w= ���ra�wwi�•iii•i.��...�ww��w�ww•:•r—ww•w� � �w�w�w•�/r/I/►rl�w0.���lil���w���ww�� fA afar �ww.wr..�• .S�•i�.w�..�ww..w���w�w�.w�—ww w.Q�� WAVA w.Nr�.r•�.r wi.�www�.ww•ww..�■�w�w—�—�ww.. �-�:oafs!•-3�--------�--�� • � wlww—�ww w�M �� r r. ri�n�•�—wiw .rra ww.w�.w�.�--w �rJ.�✓ ia3�•�—�ww��w�w�w���w�wnw�wwww ��� � rii`i�. s'�w1•s��ww��www�wr�•��www �w�.1.J.../.�s>ls,w.�w��w��www�•www��ww Q�' �.��.w��•i.www��ww.w—�. �.wr,aw.'a.ww.•���.Mw�ww..•wl�ww ���� w'J�I�wwwww�•wow—��w.w w—���w r .w cstawa��� •w�w.�wlfa��.w� �� / r if�ww�w. ��I�wwlw�w��•� 1 , - ► 1 1 s i FOR: JOB NO. PA&TECH �� GjLo33 Engineers /Planners /Surveyors PAGE 2601 S.35th-Suite 200/Tacoma, WA 98409/473 4491 �^ Seattle 623-5736/Gig Harbor 851-3033 I OF 6100 Southcenter Blvd. Suite 100/Seattle, WA 98188/243 7112 PREPARED BY, DATE: 3721 Kitsap Way-Suite 4/Bremerton, WA 98312/377-2053 CHECKED BY: SCALE: U i w �o��� } z Q r Z m 4� x p 9,0'f �O � za °o SUE5J EGT t M O P E FAT`( __ 2-9 Z8 �0 32 33 �0 �r 1` VICINEITY MAP A G+ va a BS. A YZ ..1 q m m 70 v C-3 'Q C3r �oQh W I �• Rt L Lb iPy m Ao 'I 41 J 7i onyx, // -71po�rt' / A c mT��rn wpm- a � \ � .",� � gam, � F / / /: � �''♦� m V v N O V \ 205.00, 1 QI'?1 5(5" 10 o i m o , o IJDI. 24-see 2G56.24" n r-- N N Lc �ma ..e Q Al • cP�A 1 1 I I / •'*�� J� ,�,a� � ,yam � . tit .i 100 71 rr Ali f fr' Ti, T. 1�ur�fj' 4 r ��• ti rxu /A j t � J 1 ! a h p• ti w 0) rt Di C w w 8 �n m �o• w w r m ttn x N (nn ~ (D ; rt m a tC� • • ft bi H (D O (D R+ M O O 0 In O In O Rl ` O to M " (D G :j w :3 N w rt rf H 'li O � .orn � wwr n (o o a a rrwo u a ri o ro .I O O O to O Ul 51 d • FJ tj (D (L In (D (D O (D O • a ,* 9' E to N ',U N In rt E - (D r•l ry (D N rt - rt C t, C d l7 0 (D N ry (D (D 1-• • R+ c� C b c3 �." C ►� a a FJ M O O \\\ \\ \ \ "C WO . • In N r• . ro En txf rl • tJ • • • • • • • • rt • • 0 a rl • O • (�] 0'4• • • • • • • • h1 • • �} pl • p �j • • • • • • • • (D • • �.� N • [� • G C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .•. In • . . . . E (D O • . • • H • • . Fes. • • . . . . . . . . • . . (y] •,y� • . . . . . . r• . . . . . . . . . . • • • • • • • • (n L-. • • • • • • • • • • • • • • • • N V • • • • • • • • • • • • • b • 0 . n H O • • • • • • • H • • • • • • • • • • • • • `� • • • • • • • • • • • • • v Vim' • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 0 o 0 0 Co O O O O O O O O O • • • • • • •• • • • • • • •• N N U •C, •J O D O D •J •o ;_ •, O 1 ro • • • • • • • Ln O Ul O O 0 O In w O to O Ul F] • • • • • • • Ln • • • • • • • dp Cy 0 0 0 0 0 0 0 0 0 0 0 0 0 Cl 0 0 0 0 0 O • tH+ J O% to 0. ,p l4 w N N Z4 In �3 0 0 10 0 �o tJ I-j F•j dp In ql• 0 O O In O In O O Ul O O O O f-n O O O O ul O z FJ r 1 ■■■■1\�■��■I111111111111��■�■�1� !1�■�1�►"`�e'l�■■f111 1111 ������ii alb•��■�1�■�si��l■■��.�[►.?.�■1■■■�■�■_■■ ■���f•7w ��■ lip. . . . 1�. ., �1�� . ► � III H mm mbomm m m NELlor4apill milli 11' MIR soon; No ■�■�i��\►!!■��Ililltlll �� ENO No�mmmbi:.V.II011111II1111006� ■ ■�■■����■��1�:�psi 11II1C.4111�� ■ ■��■■/�����■�■�■■��■■■�■ mono ■o� �■ gftmmmm _. _..=1 •t ....__1 L ..y_i-. •..L�.-r, :.�--• _�__..=r._..:_-�_�- -w - i:_ :�..' -..r'.�.L...L(_._,-_ '... ' 11 .•1 _j_t_ -}-{�-y1..j_ :..:..1. .l ' ! I.L... JJ ' � J_I. •�-� ..•. .. _._t. :.. 1. j 4. -j- ' ' `t_ICI. ( �-•- - ' -I - � +'_- : I.,. _ _ .i _1_: �' .... ..1 J_ !_ ._L `_l_ 1-4 1 I-L -, }-± .«-�--�1 •-1-i J-I -r t- -1-'•-+ •��..��r -J- �'•+-j-• :-i-• -t-t -j� � I-•- - - - - -ram -�- _ _ - -- _ - I• _- _ •' -1-I- -1-� +• -� , ;. 1 �_ a_ .,_� � I.I :_I! N • . , lilt IT ti a r to Z o m f 0 fX `,Y o 90 9� N y rr ig.l !� l C� / \ C1 3 .1 / o � L s I 1 D / O O V) z C \ n Cf.) --� O � \ \ \ 110 CO \ rl 12 � � Z \ 114 ' % 9 !1 116 \ \� \ \\o0 00 ° -� 118 \ \ o �10a \� o \ \\ �\ o oz 120ri 106 \124 — r /52 • II �Gag In to 1 J a, IIIla . • II II • J ! 07 ra, Mail 11 •I —1� of, e 352 all y O ' o II 4� II ■ Lam' --� ' it i3 • ad r •• e as LW Imo. r •• O , • 0 34 . T I ,�-^� II!_ it