Loading...
ORD 96-47 ENGINEERING DESIGN AND DEVELOPMENT STANDARDSORDINANCE NO.96-47 AN ORDINANCE of the City of Bainbridge Island, Washington amending Chapter 7 of the "ENGINEERING DESIGN AND DEVELOPMENT STANDARDS", relating to road standards as adopted by Section 2(A) of Ordinance 94-29. WHEREAS, Section 2(A) of Ordinance 94-29 adopts the "ENGINEERING DESIGN AND DEVELOPMENT STANDARDS" by reference, and WHEREAS, Public Works staff has been working with other governmental agencies and the citizens in reviewing the road standards and has developed the attached revisions, and WHEREAS, the Public Works Committee has reviewed the joint effort review and upgrading of the road standards; now, therefore THE CITY COUNCIL OF THE CITY OF BAINBRIDGE ISLAND, WASHINGTON, DO ORDAIN AS FOLLOWS: Section 1. Chapter 7 of the "ENGINEERINING DESIGN AND DEVELOPMENT STANDARDS" adopted by reference in Section 2(A) of Ordinance 94-29 and dated April 1994 is repealed and replaced by the version of Chapter 7, dated October 1996 and set forth as Exhibit A to this ordinance. Section 2. This ordinance shall take effect and be in force five days from and after its passage, approval, publication and posting as required by law. . PASSED by the City Council this Approved by the Mayor this Janet K. West, Mayor 19thday of December , 1996. day of December , 1996. SUsan Kasper, Ci~ CI/erk~ APPROVED AS TO FORM: Rod P. Kaseguma, City Attorney FILED WITH THE CITY CLERK: PASSED BY THE CITY COUNCIL: PUBLISHED: POSTED: EFFECTIVE DATE: ORDINANCE NO.: 96-47 December 19, 1996 December 28, I996 December 31, 1996 January 1, 1996 CHAPTER 7 - ROADS AND STREETS 7-01 Desi.qn Requirements 1. Public streets shall meet the requirements of Table 7.1 "Street Requirements" or of Table 7.2 "Optional Suburban Street Requirements" herein and conform to the applicable sections of the "Subdivision Ordinance". 2. Private streets shall conform to the same requirements as Public streets except that "Right of way width" shall be replaced by "Easement.width" and asphalt concrete pavement is not required. Additionally, new proposed private streets shall not serve more than four (4) residences. 3. Pavement thickness sections shall be in accordance with standard drawings at end of this chapter. 4. Street drainage requirements, manholes, catch basins, etc., shall meet the requirements of Chapter 9 "Conveyance Systems". 5. The following additional street requirements shall also apply: a. Street widths shall be in conformance with the City's Comprehensive Plan. b. Transverse slope shall have a two percent (2%) crown unless otherwise approved by the City Engineer. c. Vertical curves shall be required when the algebraic difference at vertical points of intersection of center line grades exceeds one percent (1%). Vertical curves shall meet the following requirements: (1) Fifty feet (50'} minimum length. (2) Elevations are required at twenty-five feet (25') stations and at the PVC, PVI, PVT, and Iow point or high point of the curve. d. Plan and profile shall be on the same sheet with plan stationing aligned with profile stationing. e. Accurate locations of monuments at all center line intersections, cul- de-sacs, PVC's and PVT's shall be determined (including PRC's where approved). 50 Public Works Design & Procedures Manual October 1996 f. When designing a new street including utilities, design so at grade, utility castings are not in the traffic tire track patterns of the street. g. Where sloped intersections exist, vehicle approach landings shall be provided. h. The geometric design at intersections to achieve drainage shall meet the following requirements: (1) At the intersection of different classifications of street (i.e., a minor arterial with a collector), the center line slope and typical cross-section should be carried through the intersection of higher classified street with the lower classified street matching in a manner which will not interfere with the slope of cross-section of the higher classified street. Table 7.1 lists street classifications from the highest class (secondary arterial) to the lowest class (residential). (2) Where the same class of streets intersect (i.e., residential with residential), the center line and slopes varying through the intersection to allow drainage. (3) At intersections, to provide drainage location, a datum detailed plan showing finish center line and gutter line grades locations may be required in accordance with the City's "Typical Street Intersection" Drawing. i. All dead-end streets longer than 150 ft. shall terminate in a circular turnaround or hammerhead per the standard drawings herein. j. In residential subdivision, the street system should be laid out with a minimum number of intersections with primary arterials. In general, intersections on the primary arterials should not be at closer intervals than 1000 feet. k. Streets shall be laid out so as to intersect as nearly as possible at right angles and no street should intersect any other street at less than 60 degrees. I. Street jogs with centerline offsets less than 125 feet shall be avoided. m. If a subdivision is traversed by a water course such as a drainage way, channel, or stream, there shall be provided a storm water easement or drainage right-of-way conforming substantially with the lines of the water course, and such further width as will be adequate for the purpose. 51 Public Works Design & Procedures Manual October 1996 5. Street lighting requirements shall be discussed in Chapter 8 of this manual. 6. Channelization and signing shall be in accordance with the latest "Manual on Uniform Traffic Control Devices" (MUTCD), and/or WSDOT "Standard Plans for Road Bridge and Municipal Construction". Channelization and signing shall be provided at a scale of 1"= 50' (maximum). 7. Power, telephone, and cable television locations shall be shown on the street plans. Proof of coordination with utility companies shall be required. 8. City utility and private service (i.e., storm, sanitary sewer, water) locations shall also be shown on the street plans. 7-02 Street Plan Requirements The following applicable requirements shall be shown on the plans: 1. Street Plan Requirements: a. Plan and profile views, per Chapter 3. b. Street names. c. Center line bearings. d. Center line/baseline stationing. e. Centerline elevations at every 50 feet (50') and 100 feet (100') stations, except as otherwise stated. f. Where transverse slopes (crown) varies from that shown on the "Typical Street Cross-Section(s)", include gutter line elevations at every 50 feet (50') band 100 feet (100') stations and beginning, end, and other critical locations throughout the duration of slope variations (i.e., PVC's, PVT's, BVC's, EVC's and slope transition changes). g. Center line grade shall be in percentage (%). h. Horizontal curve datum at center line. i. Vertical curve datum at center line. 52 Public Works Design & Procedures Manual October 1996 j. Intersection gutter line and right-of-way curve datum in accordance with the City's 'q'ypical Street Intersection Detail". k. Intersection elevation datum. I. 'Typical Street Cross-Sectionls)" per City Standard Drawings with actual design pavement thickness section. m. Accurate locations of monuments at all center line intersections, cul-de- sacs, PVC's, PVT's and PRC's. n. Locations, length, width of sidewalks, and driveways. o. Length, type, and location of curb and gutter. p. Wheelchair ramp locations. q. Right-of-way and width; lot/subdivision lines and street addresses. r. Right-of-way radii. s. Curb to curb pavement width. t. Mailbox design and/or placement/replacement. u. Street Landscaping. v. Standard Street Construction Notes. w. Legend (complete for existing and new). 2. Illumination Plan Requirements: a. Luminaires -location, type, height, and wattage. b. Service Cabinets -location and type. c. Conduits and Wire -location, type, size, and length. d. Junction Boxes -locations and types. 3. Channelization and Signing Plan Requirements: a. Incorporated with "Illumination Plans". 53 Public Works Design & Procedures Manual October 1996 7-03 b. Lane markers -locations and types. c. Pavement markings - locations and types. d. Sign -locations, types, and mountings. e. Painted street curbs. 4. Signalization Plan requirements: a. Separate detailed plans required. b. Pole base locations. c. Traffic loop location. d. Conduit location. e. Details of traffic signal system to be reviewed and approved by the City Engineer. f. Location of power source. 5. Utility Locations Plan Requirements (New and Existing): a. Storm Drainage system. b. Water System. c. Sanitary sewer system. d. Telephone. e. Power. f. Cable T.V. g. Address any horizontal or vertical utility conflicts. Street Plan Notes 1. The applicable "General Plan Notes" in Chapter 3 shall be shown on the plans. 54 Public Works Design & Procedures Manual October 1996 TABLE 7.1 STREET REQUIREMENTS Characteristic ADT Design Speed (MPH) Min. Horizonlal Curve (ft.) Min. Tangent between Reverse Curves (ft.) Max. Grade (%) Max. Superelevation (%) Min. Gutter Line Grade (%) Min. Curve Radii (ft.) Min. Street Intersection ROW Radii (ft.) Min. Stopping Sight Distance (ft.) Min. Pavement Width (ft.) Min. ROW Width (ft.) Min. Lane Width (fl) Secondary Arterial Urban Suburban Collector Urban Suburban >3000 >2000 2000to 3000 50 50 40 85O 850 49O 300 300 150 lO00to 2000 40 490 150 12 12 12 12 6 6 4 4 1 1 1 1 50 50 40 40 30 30 25 25 400 400 275 275 32 32 26 26 6O 60 50 5O 11 11 10 10 Residential Urban Suburban <2000 <1000 25 25 160 160 100 100 12 12 1 1 25 25 150 150 24 18 (12 See TABLE 7.2) 40 30 12 9 55 Public Works Design & Procedures Manual October 1996 TABLE 7.2 OPTIONAL SUBURBAN STREET REQUIREMENTS (OUTSIDE HISTORIC WINSLOW) Characteristic ADT Design Speed (MPH) Min. Horizontal Curve (ft.) Min. Tangent between Reverse Curves (ft.) Max. Grade (%) Min. Gutter Line Grade (%) Min. Curve Radii (ft.) Min. Stopping Sight Distance (ft.) Min. Pavement Width (ft.) Min. ROW Width (ft.) 20 Lots or less 10 Lots or less about200 about100 25 25 160 160 100 100 1 or 2 lots about 10 to 20 20 100 12 12 12 1 1 1 25 25 25 150 150 100 12 2-Way traffic with turnouts every 300 feet or less based on sight distance to be approved by Engineering, no parking allowed OR 12 1-Way loop, no parking allowed IF built-in fire protection is provided in all residences accessed. 12 1-Way loop, no parking allowed 30 30 12 2-Way traffic without turnouts, no parking allowed, with Engineering & Fire approval 20 (30 if potential through connection exists) 56 Public Works Design & Procedures Manual October 1996 C:,T fie E T 5' FOG LINE 11' 60' CENTER STRIPE 1'-0" IdlN. PLANTING STRIP -,~ -- (IF USED) - i-- TOP COURSE - - .,,~,! ,.,:.irt:>3,000 ~DT ! I~EV, ~0-28~96 CITY OF ~AliXlt-~RIDG/!j S'[ANDAIRD FOG; CENTER FOG F '.v LINE STRIPE LINE --:~,~:,1 I ~:DGE 10'-0" MIN i X DUCTILE IRON PIPE :~z,/[~LLED WATER LINE ON s,- .oULDtR- ~. ~ SOUTH OR_ WEST_ Z.' i.~l~,~. ~ ~ CL. B SIDE O~ ~ I ~X _.~ ~_ ~. ASPHAL~ CONC.~ I ,. ./--F ll~lz-,~,-~ o ~.~ ~a.o. o o,~,~ ~ a k~;o.o .o.oo~';o~~ ., ..-L.~-,,,-: o , . . . ..... . ~.. .. -. ~;_~ ~'~- ~ !~~[~[[[~ n--~--~=Z IX~~- "' 1~" x '" / IX ............ ~' -q-" ~' CRUSHED SURKACINO~ ORAVEL BASE TOP COURSE ~ (AS NECESSARY ~.i:- K,~Crt '"/OIJ~RRY 3" MIN. - 6" MIN.) Sd.P..FzCIIiC- DEPTHS TO BE ~,ETERi.~I~ED BY ENGINEER. 2,000 ADT CITY OF [~AINBRIE)GE REV 10-28-96 s r ,EE-r SECONDARY Af?IERIAI_ - St uTILITY I_II,IES ON ,')RTl t OR E~ST ~IDE IDt STREIZI ~,'V ,A l _ I ( CUTTER (TYP.) 50' CENTER STRIPE FOG LINE (.5' FOR DESIGNATED BII<IE LANE) 1 '-0" MIN. .., !Yl I~L PLANTING STRIP / WALK, CL. B "-- H- A. SpHALT, CONC, _ 6"/. (3' MIN.) ~. ~ I I 1 !?..C.O.WRsE / I ~'6" (3" MIN.) - GRAVEL BASE (6" M~N.) -1 F!,' W -z...~-,,L V()IUME~: 1.O00 TO 3,000 ADT REV. 10-28-96 CITY OF BAINDRIDCE I'i,i ,",I I[-, STANDARD DE 1,~ll_~ STREET STAN DAI?[-, COLLECTOR - -- .50' FOG CENTER LINE STRIPE ~'t ~o' GR'tV[LL[D z' ,.,~,,. N k CL. B I N_~ '~_ ASPHALT CONC. ~ , ~ ~'-~,,~,nDn~- -- ,, ,,, -- ~ ~ , , ~ TOP COURSE / ~ (~" ~N.) / -,x,-~'D~ ~,~: ( S NECESSARY-6 MIN.) :-" .- =-'~ ' x STORMWATER COLLECTED ON ROADWAY AND TIOHTLINED TO EXISTING DITCH SIjRF~CII,IG DEPTHS TO BE DETEf.)L,I~I'I£D LB'F ENGINEER. -:,'-FFIC VOLLII.IES' 1,000 TO 3,000 ADT REv. lO-28-96 '~'^ l) CITY OF BAINI~RIDCE STANDARD DE-IAIL. STREE] STA. NDAf~I) COLLECTOR - SL~BLJP, R.'~II UTII_I1Y LINES ON I"lO~lm OR EAST SiDE ,'-',F STREET 12' 4C NO CENTER LINE P ,'W WALr:: . PLANTING STRIP -"" k (IF USED) CEMENT i ,,., J CONCRETE .-',m~t J 6" .CL. B ASPHALT CONC. GUTTER 4" ~..~,~.~ f - 1'-6" ~ ~CRUSHED SURFACING ~ TOP COURSE GRAVEL B~SE (2' MIN.) (AS NECESSARY-6" MIN.) SLJF~Fz, CIIIG DEPTHS TO BE ~;EI'L&r. IiI.!ED F~'I' ENGINEER. 2,000 ADT lEV. 10-28-96 CITY OF BAINBtRIDGL %LAI, D STANDARD DETAILS U,'S -- IJ <~ < r-~ C ~ ,3' 7,~~ 1_O'-O" MIN. I~,/. THICKENED ASPHAlt ~ /[~/ /GRAVEl_LED St401JI_I)ER ~ 3' MIN. SHOULDER p ~ C, Z ~, ...... //~ ~ " I:~' ~ ~ ~"': I~[ - = _ ~~~.o~ M / ,~: ~ x~~' -' I'-'~ ........... :~h~ 'lZ'x,U fl~' ~ ' CRUSHED SURFACING ~ Z~lhx-Zt '~l~h~- ~ TOP COURSE J, ) '11~'~:~'~: Xx 2" MIN ~ mh~._ sou , SIDE OF ~ ENGINEER. T -E .: :- t:- I ~ ',.,'OLUMES: [O BE DETERMINED REV. 10-28-96 CITY OF BAINI3RIDGE ICI AI,IE, STANDARD DE'lA STREET S TAI',I DAt:,' I.~ RESIDENTIAl_ OPTIONAL CITY ENGINE[R Fh:TE DWC NO GRAVELLED~ TURNOUT AREA MIN. MIN. S=2 Mil _( S=2~ ~TC~RUSH D SURFACING \ OP COURSE / ~2" MIN. ' x ,, ~ WATE~ LINE G~AVEL BASE (AS NECESSARY-6 MIN.) SOUTH OR WEST S~DE [? ;/',',/ TItlCKENED c xGl?AVl:__ll ED %tuhUt DER 3' MIN. \ DEPTHS TO BE t3'," ENGINEER. --~-FF~C '.,OLIJMES' TO BE DETERMINED REV. ~0-28-96 CITY OF BAINBRIDGE I%L,A,F,~© STANDARD DETAILS STREET STANDAN© RESIDENTIAL SUBURBAN TURNOUt' CIIY ENGINEER 1 -- PAVEMEN f EDGE PAVEMENT EDGE 300 FEET HAXIHUN DETV,/EEN TLIRNBUIS TURNOUT LOCATIONS FOR ONE LANE ROADWAYS EDGE OF PAVEMENT ./ .... El)Gl OF --'.-- 1 5' PAVEM[Nf 40' TURNOU1- DE-FAll_ FIRAt ! lC VOl UMF.~;: TO I)E DETERMINED REV. 10-28-96 CITY O1: I.;~AINI~IRII)(;I I~;I ANI) .S 1 ANI)ARI') I)1 I All RESIDENTIAl_ .-~tJI}UI,ItAN II/I,~NOU CITY COUNCIL AGENDA BILL PUBLIC WORKS DEPARTMENT Subject: AMEND "ENGINEERING DESIGN AND Date: 12-19-96 DEVELOPMENT STANDARDS" Agenda ORDINANCE 96-47/3rd READING. Bill No. Item: Fund Source: NA Expenditure Req.- Net: $ Amount Budgeted: $ Wash. State Sales - Tax: $ Less $ Encumbered/Spent: Total Expenditure: $ Less this Req. $ Balance: $ Attachments. ORDINANCE 96-47 w/Chapter 7. SUMMARY STATEMENT The Public Works Committee has been working with the Planning and Public Works staff and the Fire District staff for several months on revising the City's roads standards in the "ENGINEERING DESIGN AND DEVELOPMENT STANDARDS". Ordinance 96-47 is the culmination of that extensive effort. The ma]or changes fo the STANDARDS is TABLE 7.2 OPTIONAL SUBURBAN STREET REQUIREMENTS (OUTSIDE HISTORIC WlNSLOW), and Drawing numbers 7-065, 7-066 and 7-067 allowing, under certain circumstances and with certain restrictions, RESIDENTIAL SUBURBAN roadways, having a 12' wearing surface as compared to the current STANDARD 18' wearing surface. RECOMMENDATION APPROVE and authorize the Mayor to execute the document(s). ZLie -wab~agenda\o~dg6,1?Eoads.agd