Document Fernley_doc_9caacaad93

City of Fernley Department of Public Works DESIGN STANDARDS S-1 March 2024 3.0 – STREETS 3.1. GENERAL 3.1.1. STANDARD REQUIREMENTS Unless otherwise specified by City of Fernley (Public Works or Community Development) adopted standards, Standard Specifications and Details for Public Works Construction or items in this chapter, design of all streets and related improvements shall conform to the following: “Guidelines For Urban Major Street Design,” published by the Institute of Transportation Engineers (ITE), and American Association of State Highway Transportation Officials (AASHTO)” A policy on Geometric Designs of Highways and Streets”, and latest editions. The more restrictive standard shall prevail for design. 3.1.2. RIGHT-OF-WAY REQUIREMENTS Street width and alignments shall generally conform to these Review Guidelines and the Standard Details for Public Works Construction and elements thereof. All streets and alleys within a subdivision or development shall be improved and conform to Public Works standards. Additional right-of-way shall be provided near intersections as required by Public Works in order to facilitate turning movements and ADA accessibility. 3.1.3. PAVEMENT DESIGN AND IMPROVEMENT REQUIREMENTS Street design shall conform to standard details and be based on the design sub grade resilience modulus (MR), R-valve or California Bearing Ratio (CBR), provided in a soils (geotechnical) report prepared by a Nevada registered Civil Engineer and traffic data provided in the project traffic report prepared by a Nevada registered Traffic Engineer, submitted with the improvement plans. All soils report recommendations are to be incorporated into the design of the improvements. The minimum existing pavement condition index (PCI) accepted with improvement plans shall be 60. 3.1.4. BORING AND TEST PIT LOGS All boring and test pit logs shall be shown on the plans. Where ground water is encountered, the elevation of ground water shall be indicated in all profiles. 3.2. DESIGN CRITERIA: 3.2.1. STREET GRADES All streets shall have a minimum grade of 0.40% unless approved otherwise by Public Works, Commercial collector, arterial and expressway streets shall have a maximum grade of 6.0%. It is desirable to have a maximum grade of 6.0% on residential collector and local streets. However, streets with a northern exposure are allowed a maximum grade of 10.0% and streets with a southern exposure a maximum grade of 12.0%. The following criteria shall also apply to street grades. • Grades in excess of 8.0% shall be limited to a horizontal tangent length of 400 feet. • Grades in excess of 10.0% shall be limited to a horizontal tangent length of 200 feet. • Grades in excess of 8.0% shall be provided with landings on both sides of the steeper section of grade 6.0% or less, 100 feet in length. ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-2 March 2024 • On long grades, the steeper grades shall be provided near the bottom of the ascent wherever possible, with shallower grades near the top of the ascent. • Street intersections shall not be allowed when the grade on the primary street exceeds 6.0% on streets with a northern exposure and 8.0% on streets with a southern exposure. • “Roller-coaster” and “Hidden-dip” patterns may only be permitted on local streets. • Sharp horizontal curvature shall not be introduced at or near the top of a pronounced crest vertical curve or near the bottom of a pronounced sag vertical curve. • Maximum grade on a cul-de-sac shall be • Cul-de-Sac’s shall not be permitted at the bottom of an incline unless otherwise approved by Public Works. 3.2.2 INTERSECTION GRADES Street grades on the minor legs of intersections shall not exceed 4% for a minimum distance of 50 feet measured from the extension of the face of curb of the primary street through the intersection (improved to full Public Work Standards). Additional criteria are as follows: i. Street intersections of two local streets in a stop condition do not require a vertical curve at the intersection of the crown section with the street grade. ii. All other street intersections shall require a vertical transition at the intersection of the crown section with the street grade. Note: A local street is defined as having a maximum average daily traffic volume of 1,000 trips or, serving a maximum of 100 single family lots. 3.2.3. STREET CROWN Street Crown – The street crown shall be 2.0% from the centerline to the lip of gutter, with a minimum of 1.0% and a maximum of 4.0%. Unless approved otherwise, the crown shall be at the centerline of the traveled way. Through streets shall maintain the centerline crown at all intersections. 3.2.4. VERTICAL CURVES Vertical curves shall be provided wherever the algebraic difference between two intersecting grades is 2% or more, excluding intersections. Such curves shall be of sufficient length to provide the minimum sight and stopping distances as established by the AASHTO, for minimum design speeds of 10 MPH for local and collector streets, 40 MPH for minor arterial streets and 50 MPH for major arterial and expressway streets. 3.2.5. HORIZONTAL CURVES Minimum horizontal curve radii shall be as specified in the following table: Minimum Horizontal Centerline Design Radii for Streets Street Classification Minimum Design Speed With Normal Crown With 2% Super Elevation - With 4% Super Elevation - Local Streets: Serving less than 20 lots 20mph 100ft ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-3 March 2024 Serving between 20 & 50 lots 25mph 185ft Serving more than 50 lots 30mph 300ft 250ft 230ft Collector Streets 30mph 430ft 335ft 300ft Minor Arterial Streets 40mph 820ft 630ft 565ft Major Arterial & Expressway Streets 50mph 1,390ft 1,045ft 925ft Note: On local and residential collector streets (less than 4000 ADT), lesser radii may be permitted by special alternate designs approved by Public Works which include traffic calming, short tangent sections and short radii to restrict the normal driver from exceeding posted speed. In no instance shall such reduced radius be less than 60 feet. Traffic calming alternatives are currently being considered by Public Works. Public Works will make the final determination on which alternative will be used on a case-by-case basis. Minimum Stopping Sight Distance for City Streets F (friction factor) Design Speed V (Mph) 20(1) Low Speed Urban Street Design 0.3 High Speed Urban Street Design Minimum Stopping Sight Distance (ft.) 150 25(2) 0.25 150 30 0.22 0.16 200 40 0.15 325 50 0.14 475 The minimum design radius shall be determined using the following formula: Where, Rmin= V2 15 (e+f) V = Design Speed R = Centerline Radius of roadway e = Rate, decimal (For a normal crown section, e is assumed negative for adverse side). Super-elevation may be required by the City Engineer on higher speed streets. Maximum allowable super-elevation shall be four percent. f = Friction factor from the above table. Notes: Horizontal curves on local streets: Serving 20 lots or less may be designed at 20 mph and posted at 15 mph; and ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-4 March 2024 50 lots or less at 25 mph, unless otherwise approved by Public Works. (Lots shall include existing and future development.) Curves on any street, except local streets, shall be separated by a tangent of not less than one hundred 100 feet. Unless specifically approved in a tentative map or other public review, no local street in a residential district shall have a tangent of greater than six hundred (600) feet or the distance of twelve (12) lots on one side of the street, whichever is less, unless it can be demonstrated that the tangent is visually broken by a vertical curve or that a longer tangent is necessary to preclude a traffic hazard. 3.2.6. DRIVEWAY GEOMETRY Unless specifically approved or conditioned alternatively, Public Street, Private Street, and driveway sections (widths) shall be per the Public Works Standard Details. Alternate street sections may be used when approved by Public Works. Driveway access from single-family dwellings shall not be permitted on collector streets which are anticipated to carry more than four thousand (4,000) average daily vehicle trips. All driveway locations are to be shown on improvement plans. 3.2.7. STREET SPACING Street spacing and intersection placement shall be as follows: Minimum distance between intersections unless otherwise approved by Public Works. Classification Downtown Outside Downtown Major arterial 1/3 mile (1,760’) ½ mile (2,640’) Minor arterial ¼ mile(1,320’) 1/3 mile (1,760’) Commercial collector 600 feet 800 feet Residential collector/local 400 feet 400 feet Local 200 feet 200 feet 3.2.8 MEDIAN OPENINGS Median openings on arterial streets that have continuous raised center medians will not normally be permitted unless all of the following conditions exist: a) The property to be served has been determined by traffic analysis to significantly impact existing traffic patterns and has a minimum continuous frontage of 600 feet along the major street, or access easements are recorded to allow use of the opening by a minimum of two properties which combined has been determined by traffic analysis to significantly impact existing traffic patterns to warrant the opening. b) The median opening is not less than 700 feet from an intersection with an arterial street. c) The median opening is not less than 400 feet from an intersection with a collector or local street. d) The median opening is not less than 600 feet from any other existing or planned mid-block median opening. e) Sight distance is adequate for the design speed of the major street. ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-5 March 2024 f) All costs such as base material, pavements, safety lighting, traffic signals, landscaping, irrigation, reconstruction or Public Works relocation required by a mid-block opening will be borne by the requesting party. g) The design of median openings shall be subject to the requirements and approval of Public Works including storage and tapers to AASHTO requirements. h) Median alternatives are subject to guidelines set by City of Fernley Access Management Policy - 2022. Applicable median alternatives are as follows: o Traversable Median o Two-Way Left Turn Median o Non-Traversable Median Median Alternatives shall be approved by Public Works prior to acceptance. 3.2.9. STREET INTERSECTING ANGLE Any street or highway intersecting any other street or highway, shall intersect at an angle as near to a right angle as is practicable, unless otherwise approved by Public Works. 3.2.10. CUL-DE-SAC AND DEAD END STREET REQUIREMENTS Cul-de-sacs and dead end streets shall conform to the latest adopted edition of the International Fire Code (IFC) requirements. Shared driveways may be terminated in a hammerhead. The minimum lot frontage on cul-de-sac streets shall be thirty (30) feet. “No Outlet” signs shall be posted on cul- de-sacs with length greater than 100’. 3.2.11. PRIVATE STREET REQUIREMENTS Private streets shall be designed to City standards as directed in this manual, including horizontal and vertical alignment. Water, storm drain and sanitary sewer systems located within a private street shall be constructed to City standards. Gated private streets shall provide a means to turn around if gates are closed. All gates shall be accessible to the Fire District. Maintenance of the gates shall be by the private development. Signs shall be posted stating “Private Street, Not Maintained by City”. 3.2.12. SHARED DRIVEWAYS Shared driveways shall be structurally designed and paved with a minimum of 2 ½ inches of asphalt concrete pavement placed over an engineered base of not less than 6” of Type 2. Class B aggregate base. 3.2.13. PAVEMENT STRUCTURAL SECTION DESIGN CRITERIA Design of the structural section for Asphalt Concrete Pavement for both public and private streets shall conform to the procedures as set forth in the current Asphalt Institute Manual Series No. 1 (MS- 1) or American Association of State Highway and Transportation Officials (AASHTO) Design Guide, based on subgrade strength values determined by Resilient Modulus (MR) Value, Resistance value or California Bearing Ratio (CBR), and traffic data provided in the approved traffic study for the project. Sufficient tests shall be made to fully evaluate each different soil type in the project. Major Arterial, Minor Arterial, Industrial and Commercial Streets shall be a Type 2 64-28NV/22NV asphalt concrete (AC) pavement mix design with hydrated lime (mineral filler) added at one and one- half percent of the weight of the dry aggregates. Collector and Local/Residential Streets shall by a Type 3 64-28NV/22NV asphalt concrete (AC) pavement mix design with hydrated lime (mineral filler) added at one and one-half percent of the weight of the dry aggregates. The minimum design life of the structural section shall be 20 years. Minimum street structural sections for both public and private streets shall be 4” AC on 6” Type 2, Class B aggregate base for local/residential streets, 5” AC on 8” Type 2, Class B aggregate base for minor arterial, industrial, commercial and collector ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-6 March 2024 streets, and 6” AC on 12” Type 2, Class B aggregate base for expressways and major arterial streets. All streets, both public and private, which are to be utilized by construction vehicles during development, shall be designed to carry the maximum anticipated loads. Concrete streets may be permitted upon approval of structural designs by Public Works. 3.2.14. ASHPALT TEST CORE HOLES Asphalt test core holes shall be plugged with 4,000 PSI non-shrink concrete grout per the Standard Specifications for Public Works. 3.2.15. CUL-DE-SACS AND KNUCKLES Minimum grades around Cul-de-sacs and Knuckle-type intersections shall be 0.5%. The normal street crown with such a development may be increased to a maximum of 4.0% from the centerline to the lip of gutter. Knuckle turnouts are not allowed on streets serving more than 20 lots without prior approval by the Public Works. Cul-de-sacs shall be measured from the front face of curb (or edge of pavement where no curb is present) of the intersecting street to the radius point of the bulb turnaround, unless provided with an emergency access designed to Public Works standards. The minimum right-of-way for the bulb shall be 6” beyond the sidewalk. 3.2.16. TEMPORARY CUL-DE-SACS Temporary cul-de-sacs shall be constructed with a minimum of 2 ½ inches asphalt concrete pavement on an engineered base when located within the development. When located within an adjacent future developable area it shall conform to temporary emergency access road standards within an access easement. All temporary cul-de-sacs shall be a minimum 48-foot radius to right-of-way. Final approval for temporary cul-de-sacs will be required from the Fire District. 3.2.17. EMERGENCY ACCESS ROADS Emergency access roads shall be a minimum 24 feet in width with a structural pavement section design to support a tandem axle load of 25 tons, unless otherwise approved by the Fire District. Grades shall not exceed the maximum for street grades unless otherwise approved by the Fire District and Public Works. It is intended that emergency access roads be open and usable at all times. Where required, access to emergency roadways at each entrance shall be controlled by an “Emergency Access Control Gate”, shall be posted “For Emergency Vehicles Only”, and shall be accessible to the Fire District. Maintenance of the gates shall be by the private development. Temporary emergency access roads shall be surfaced with a minimum of 3 inches of Type 2, Class B Aggregate Base with and application of a minimum of 0.08 gallon per square yard of a non-latex emulsion asphalt seal coat, such as SS-1h, and adequate roadside drainage shall be provided. Where required, access to temporary emergency access roadways at each entrance shall be controlled by an “Emergency Access Control Gate”, shall be posted “For Emergency Vehicles Only”, and shall be accessible to the Fire District. Permanent emergency access roads shall be paved with a minimum of 3 inches of Type 2 64- 28NV/22NV asphalt concrete pavement on an engineered base and adequate roadside drainage shall be provided. Unless otherwise approved by Public Works, all improved accesses shall provide for vehicles to enter traffic “nose first”. 3.2.18 MAINTENANCE ACCESS Vehicular access for maintenance of City-owned sanitary sewer, water and storm drain facilities and their related appurtenances are to be constructed to a minimum un-encroached width of 12 feet, structurally designed to support a tandem axle loading of 25 tons, with adequate roadside drainage, ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-7 March 2024 and are not exceed 12% in grade. Dead-end access roads in excess of 150 feet shall require termination in a hammerhead, turnaround or ‘Y’-turn. Temporary maintenance access roads shall be surfaced with a minimum of 2 ½ inches of Type 2, Class B aggregate base, and adequate roadside drainage shall be provided. Where required, access to temporary maintenance access roadways at each entrance shall be controlled by an “Access Control Gate”, shall be posted “Maintenance Access Only”, and shall be accessible by City of Fernley Public Works. Permanent maintenance access roads shall be paved with a minimum of 2 ½ inches of Type 3 64- 28NV/22NV asphalt concrete pavement on an engineered base and adequate roadside drainage shall be provided. Unless otherwise approved by Public Works, all improved accesses shall provide for vehicles to enter traffic “nose first”. Where required, access to permanent maintenance access roadways at each entrance shall be controlled by an “Access Control Gate”, shall be posted “Maintenance Access Only”, and shall be accessible by City of Fernley Public Works. 3.2.19. TEMPORARY PATCHES Temporary patches on public streets shall match the existing pavement depth but shall be a minimum of 3” thick and be composed of hot mix asphalt or cold mix paving materials. Aggregate base surface material shall not be used as a temporary surface on any cut unless the preexisting street surface was gravel or an aggregate base material. Hot mix asphalt may be required by City of Fernley Public Works or City of Fernley Quality Assurance Inspector for certain repairs where deemed necessary to maintain adequate driving conditions. Hot Mix temporary patches shall be Type 3, PG64-28NV/22NV or Public Works approved equivalent. and compacted with approved mechanical tampers. Aggregate base under temporary patches shall be Type 2 Class B and be a minimum of 36” below the existing AC surface temporary patches shall not deviate more than ¾ inch above the existing pavement grade when measured from the bottom of a straight edge laid two feet beyond the patch on both sides of the existing pavement. In no case shall the elevation of the patch be lower than the existing adjacent pavement elevation. All loose material shall be removed from the temporary patch site immediately after completion of the patch. It will be the responsibility of the excavation and encroachment permittee to maintain the temporary patch until the permanent patch is completed and signed off by the Public Works. Any temporary surface that fails to provide a non-deteriorating riding surface or fails to meet the requirements of these specifications shall be removed and replaced at the City of Fernley Public Work’s discretion, at the responsible person’s expense. 3.2.20 STREET CUT PENALTY PROGRAM Street cut penalties will be calculated and charged per City of Fernley’s Street-Cut Ordinance. 3.2.20. ASHPALT SURFACE OR MATERIAL DEFECTS “Rock Pockets” in the final surface of the asphalt and asphalt air voids or compaction deficiencies shall be addressed with Type II or Type III Slurry Seal, if applicable, or by patching or reconstruction as designated by Public Works. 3.2.21. LANDSCAPE MEDIAN Where applicable, the use of raised landscape medians is preferred over the use of striped double left turn treatments to channelize and control left turn movements. ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-8 March 2024 3.2.22. ALTERNATIVE PAVING SURFACES Alternative paving surfaces such as stamped concrete or pavers may be considered on a case-by-case basis. Alternative paving surfaces shall be approved by Public Works. 3.2.23 RECYCLED ASPHALT BASE Recycled asphalt base materials may be utilized as a substitute for Type 2 Class B aggregate base for use under bituminous pavement if it meets the following criteria: a) Recycled asphalt base material shall conform to the Standards and Specifications (Orange Book 2012), Subsection 200.01.04, Type I Recycled Asphalt Concrete Base. b) The Engineer of Record shall provide documentation to confirm that adequate testing was performed to ensure compliance with the Standards and Specification (Orange Book 2012). c) Recycled asphalt base shall not be substituted for Type 2, Class B aggregate base under any Portland Concrete structure. d) Density testing must be performed be ASTM standards. No direct-read nuclear gauge test will be allowed without proper correlation with Public Works. Nuclear gauge test reporting moistures will be rejected. e) For street reconstruction, AC grindings may be combined, in place, with base course and subgrade per gradation requirements set forth in Orange Book, Section 2001.01.04. Sufficient tests results shall be provided prior to approval for use. 3.2.24 RECYCLED ASPHALT PAVEMENT Recycled asphalt content in asphalt mixes shall not exceed 15%. 3.2.25 MILL AND FILL REQUIREMENTS Mill depth shall not exceed half the thickness of the existing pavement section. A minimum of 1.5 inches of existing pavement shall be left after milling. Milling and filling operations shall be performed over the full width of pavement. 3.3. TRAFFIC TECHNICAL REPORTS Copies of technical analyses associated with street design and traffic device improvements are required by Public Works if improvements are going to generate 100 peak hour trips or more. Public Works may require a traffic study regardless of the number of trips generated by improvements, due to the improvement type and location. All traffic reports must reflect all cumulative impacts and mitigations of previously approved projects. An incomplete traffic report will result in a submittal rejection. The following criteria shall be considered for a Traffic Report. 3.3.1. TITLE PAGE a) Project name b) Preparer’s name, firm, date c) Professional engineer’s seal of preparer and signature. 3.3.2. INTRODUCTION ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-9 March 2024 a) Site location b) Proposed project description. 3.3.3. TRAFFIC ANALYSIS a) Trip Generation. i) To be calculated using Section 3.4, “Recommended Procedure for Estimating Trip Generation” in the latest edition of the I.T.E. Trip Generation Manual, or from a trip analysis of identical project. Analysis shall also include all conditioned and entitled projects in the area as well as projects in construction but not yet generating traffic. b) Pass-by Trip Reductions. i) Must be approved on a case-by-case basis for traffic studies. c) Level-of-Service Analysis. i) Calculations shall be based on the latest edition of the Highway Capacity Manual. ii) Provide mitigation measures for intersection which operate at a level-of-service of D or less. Possible measures can be, but not limited to, signalization, channelized medians, turning lanes, storage lane increase, restricted turns and/or additional lanes. Advantages and disadvantages need to be included with mitigation measures. d) Warrant Analysis/Progression Analysis for Traffic Signals. e) Left/Right-Turn Storage Analysis. i) Storage bay analysis must be performed at all study intersections and project driveways identified in the traffic study scope. Storage at signalized intersections is to be calculated utilizing the Poisson Method with a 95% confidence and a 3-minute wait. Storage at un-signalized intersections is to be calculated utilizing the uniform arrival rate with a 2-minute wait. ii) Use existing and committed improvement lane configurations in the analysis. iii) For phased improvements, the study will address improvements to be constructed with each phase and the associated participation for each phase. f) Traffic Accident Analysis. i) Pedestrian and Traffic accident data shall be evaluated at intersections, median openings and mid-block locations for a minimum period of 3 years. The accident potential is to be analyzed with mitigation measure recommendations. g) Figures. i) Vicinity map. ii) Site plan map. iii) Directional distribution iv) Peak hour site only volumes. v) Existing peak hour traffic volumes (current within 12 months). vi) Future background traffic volumes. vii) Future background with site traffic volumes. viii) Existing geometrics and control. ix) Recommended geometrics and control. x) School walking routes for residential developments. xi) Site plan or project boundary superimposed on aerial photograph. 3.3.4. CONCLUSION a) Improvement Impacts. i. Benefits. ii. Adverse effects with solutions for mitigation. 3.3.5. APPENDICES ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-10 March 2024 a) Planning Commission/City Council conditions. b) Site Plans (24” x 36” and 11” x 17”). i) Buildings with total area. ii) Drive aisles iii) Public and Private Street names. iv) Medians. v) Right-of-Way. vi) Opposing/Adjacent driveways. vii) Gated Entries. c) NDOT’s Access Management System and Standards Statement of Conformance (if applicable).c d) Calculations. 3.4. SIDEWALKS, CURB AND GUTTERS, DRIVEWAY APPROACHES, CURB-CUTS, ALLEY AND BIKEWAYS: 3.4.1. SIDEWALK AND CURB AND GUTTER REQUIREMENTS Public sidewalks, curbs and gutters shall be installed or existing improvements replaced when deteriorated or displaced, including paving between street cut and gutter line on all streets, except sidewalks may only be omitted where the sidewalk has been waived by Public Works. In no instance, shall sidewalks be less than 5 feet in width. Pedestrian ways shall be provided from all public sidewalks to the entrance of buildings as required by Public Works. Necessary right-of-way shall be dedicated, or easement granted as required by Public works. In new developments, sidewalk requirements shall be determined at time of tentative map or parcel map approval, or if sidewalk is impractical or is unnecessary for pedestrian access purposes as determined by Public Works. Sidewalks in commercial or industrial developments outside of City of Fernley Public Right-of-Way may be deferred until a building permit is issued. Sidewalks, Curbs and gutters and pedestrian ramps shall be constructed with 4,000 PSI fiber-reinforced Portland Cement Concrete, per Public Works standards. Glue-down curbs are not permitted at edge of pavement. Volumetric Concrete Mixers shall be certified as Ready Mixed Concrete Plant Facility by National Ready Mixed Concrete Association (NRMCA). Sidewalks shall meet the required 2.0% maximum cross slope per the Americans with Disabilities Act Accessibility Guidelines (ADAAG) and Public Right-of-Way Accessibility Guidelines (PROWAG). 3.4.2. UNUSED DRIVEWAYS Unused driveways shall be replaced with new curb, gutter, and sidewalk. 3.4.3. PEDESTRIAN RAMPS FOR THE DISABLED “Pedestrian Ramps for the Disabled” shall be provided at all curb returns in accordance with Public Works standards. A minimum of one mid-block ramp shall be provided at ‘T’-intersections. Pedestrian Ramps at mid-block are not required within residential developments, unless requested by City Engineer. Alignment of ramps shall provide for minimum pedestrian exposure to traffic during crossing of streets. Truncated domes are required on all new and reconstructed pedestrian ramps to meet ADA and PROWAG requirements. 3.4.4. PROPERTY LINES AT INTERSECTIONS Property lines at intersections shall accommodate the installation of the “Pedestrian Ramps for the Disabled” and additional required sidewalk entirely within the right-of-way. Property lines at intersections shall accommodate the installation of the mid-block ramp and additional required sidewalk entirely within the right-of-way. ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-11 March 2024 3.4.5. CURB RETURN RADIUS Unless specifically approved otherwise, curb returns shall have minimum face of curb radii of 20 feet on local streets, 25 feet on collector streets, 30 feet on minor arterial streets and 40 feet on major arterial and expressway streets. 3.4.6. DRIVEWAY SPACING Driveway spacing requirements shall meet the requirements set forth by the City of Fernley Access Management Policy. Minimum spacing between driveways on local/residential streets shall be 10 feet from low point to low point of the driveway taper, based on a minimum of 5 feet from property line. The maximum grade for residential driveways shall be 14%. 3.4.7. BIKEWAY DESIGN CRITERIA The design of bikeways shall conform to the AASHTO “Guide for Development of New Bicycle Facilities”, latest edition, unless otherwise specified by City ordinance, Standard Specifications and Details for Public Works Construction, or item in this section. The structural section for bicycle and pedestrian path facilities shall be based on a soils report recommendation. The minimum structural section shall be 2 ½ inches of Type 2 or Type 3 64-28NV asphalt concrete pavement over 6 inches of Type 2 Class B aggregate base, except where they are integrated with adjoining pavement for vehicular access, the associated minimum street structural section shall apply. 3.4.8. SIDEWALK AND GUTTER OBSTRUCTION REQUIREMENTS No obstruction power poles, street lights, signal poles and controls, water meter boxes, pull boxes, mail boxes, fire hydrants, etc.) shall be allowed to be located within public sidewalks or pedestrian ways, or within sight triangle, except as may be allowed by Public Works where obstructions exist within existing improvements. A minimum unobstructed clearance of 36” shall be maintained from any obstacle. Additional right-of-way or easement shall be provided where required. The use of permanent curb ramps of any type, in the public right-of-way, for vehicle transition from the street over the curb is prohibited. A removable, non-permanent ramp may be used to assist a vehicle over the curb, but shall be removed after each use. 3.4.9. CUT AND FILL SLOPES Cut and fill slopes shall be consistent with the recommendations of the soil engineer, engineering geologist, and the Public Works Director/City Engineer. When there are cut/fill slopes between properties, the property line shall be located at the top of the slope to encourage maintenance of the slope area. Terraced slopes are allowed. The following design elements shall be included and implemented as a part of a terrace design solution: a) Retaining walls and/or rockery walls b) Landscaping with permanent irrigation c) Wall and landscape maintenance ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-12 March 2024 d) Address wall stability: Static loads (ii) Seismic conditions e) Provide a six foot minimum landscape buffer between the back of sidewalk and face of wall. Cut or Fill slopes shall be constructed no steeper than 3 horizontal to 1 vertical. Cut or fill slopes steeper than 3 horizontal to 1 vertical shall be reviewed on a case-by-case basis. Cut or Fill slopes shall be designed to blend into the natural topography. All Cut or Fill slopes shall be stabilized against erosion with revegetation or placement of rip rap: All slopes utilizing vegetation for stabilization shall include temporary and/or permanent irrigation to be determined by the soils engineer or landscape architect. Revegetation seed mix shall be compatible with the on-site soil conditions (such as alkaline, Salt or upland). Slopes shall be revegetated within the growing season (May-September). If the work cannot be completed within that timeframe, the developer/contractor shall provide surety for completion during the next growing season and maintain alternative means of stabilization until revegetation is established. If rock rip rap is utilized for stabilization it shall be sized by the soils engineer and include recommendations for fabric underlayment and details to key the fabric or rip rap into the slope. A final geotechnical report shall be submitted to and approved by the Public Works Director or City Engineer prior to the construction of fills. Fills that are greater than 20 feet in height and/or are to be constructed on natural slopes of 10 degrees (6 horizontal: 1 vertical) or greater shall require complete geotechnical analysis. Retaining walls and rockery walls shall be designed by a licensed professional engineer and reviewed and permitted by the City of Fernley Building Department. All retaining walls constructed within the public right of way must have an easement granted of sufficient width on the private property to maintain and reconstruct the wall. Anti-graffiti treatment shall be incorporated on all masonry or concrete retaining walls. Handrails and/or fall protection shall be incorporated into the design when slopes or retaining walls create fall hazards. 3.4.10. MULTIFAMILY, COMMERCIAL AND INDUSTRIAL DRIVEWAYS All multifamily, commercial, and industrial driveway approaches shall enter properties via a standard curb-cut and driveway with spandrel. All multifamily, commercial and industrial driveways shall have well defined locations. Large, paved areas adjacent to the traveled roadway shall not be permitted. Driveways shall comply with the City of Fernley Access Management Policy. Driveways used for emergency access only can utilize the standard detail for commercial driveways. 3.4.11. ALLEY REQUIREMENTS Alleys required to serve a development shall be installed or existing improvements replaced when deteriorated. The minimum structural section shall be 3 inches of asphalt concrete pavement on 6 ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-13 March 2024 inches of Type 2, Class B aggregate base. Alleys shall be constructed or reconstructed to full width. Longitudinal grades in alleys shall conform to standards for streets, with a cross slope of 2.0% minimum from the property line toward the center of the alley. Off-site alley improvements may be required by Public Works for provision of safe and adequate access to the subject site. 3.4.12. ADA COMPLIANT All sidewalks, curb and gutters, driveways approaches, curb cuts, alleys and bikeways shall be ADA and PROWAG Compliant as specified by Public Works. 3.4.13. CONSTRUCTION DEBRIS All public streets are to be kept free and clean of construction debris. If debris is accumulated throughout the work day, it is to be removed prior to leaving the site. Failure to clean construction sites may result in work stoppage until issue is addressed. 3.5. TRAFFIC DEVICES, CONSTRUCTION TRAFFIC CONTROL, AND TRAFFIC CALMING: 3.5.1. MUTCD COMPLIANCE The application, design, and installation of traffic control devices shall be in accordance with the Manual on Uniform Control Devices (MUTCD), latest edition, published by the Federal Highway Administration. 3.5.2. INSTALLATION AND REMOVAL OF TRAFFIC CONTROL DEVICES Traffic control devices shall be installed or modified if warranted as determined by and approved traffic study/analysis for new development projects, and/or as directed by Public Works. Traffic calming devices shall be considered in traffic studies/analyses. 3.5.3. STREET NAME SIGNAGE Street name signs to Public Works standards shall be installed at all intersections and may be required on arterial streets in advance of intersections. Where private streets intersect public streets, standard signs that say, “Private Street Not Maintained by City” shall be installed. 3.5.4. SPEED LIMIT SIGNAGE Speed limit signs shall be installed in proximity to all arterial or collector street intersections, and on local streets having a different speed limit than the intersecting street. Posted speeds on City streets shall be 25 MPH on local and collector streets, 35 MPH on minor arterial streets and 45 MPH on major arterial streets, unless designated otherwise by Public Works or to maintain consistency with City policies or law. Speed limit signage shall be installed on all streets where the limit changes from on speed to another. 3.5.5. SPEED CONTROL SIGNAGE ON CURVES When the design speed of a curve falls below the posted speed limit, curve warning signage with an advisory speed plate and 4 inch double solid yellow centerline striping shall be installed from beginning of curve to end of curve. 3.5.6. NO OUTLET SIGNAGE ON CUL-DE-SAC A “No Outlet” sign shall be installed at the entrance to any cul-de-sac exceeding 100 feet in length. ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-14 March 2024 3.5.7. ONE WAY STREET SIGNAGE AND STRIPING At driveways on minor street intersections with one-way or median-divided streets, “One Way” and/or “Right (Left) Turn Only” signs shall be installed. Corresponding pavement markings may also be required. 3.5.8. PARKING CONTROL SIGNAGE AND STRIPING Parking control signs shall be installed and curbs painted at street intersections, at fire hydrants, adjacent to driveways, and other locations as required. Curb colors are red for parking prohibited, yellow for restricted parking, and blue for handicapped parking. The top and face of the curb shall be painted with standard traffic paint. Parking is prohibited within 15 feet centered on the fire hydrant; Fire District policy establishes locations for required hydrant markers. 3.5.9. PARKING METERS Installations of parking meters poles and parking space marking may be required. Installation of parking meters shall only be performed by the City. Meter bags may be obtained from the Community Development Department. 3.5.10. STRIPING All longitudinal striping shall be NDOT Type II waterborne paint applied in two coats. The pavement surface shall be cleaned and dry prior to the application of the paint striping. When half street improvements are constructed abutting existing pavement, the entire width of the street and adjacent transition area shall be striped in accordance with applicable MUTCD and Public Works standards. Existing, conflicting pavement markings shall be removed by grinding. Blacking out markings is not an approved removal method. 3.5.11. STOP AND YIELD MARKINGS Stop bars, yield lines, cross walks, bike lanes and word symbols shall be thermoplastic material, beads shall be required. Only stop bars and yield lines are required on local/residential streets, unless it is a four-way stop condition or the local/residential street abuts a collector street. Crosswalks are required on collector and arterial streets and intersections. The pavement surface shall be cleaned and dry prior to the application of the paint striping. 3.5.12. SCHOOL TRAFFIC DEVICES School-related traffic devices shall be installed, relocated, or removed as required, and as consistent with the applicable “safe route to school plan”. New or updated “safe route to school plans” shall be required in conjunction with the development of new schools or expansion of existing schools. The “Nevada School Traffic Safety Handbook” establishes guidelines for the application of school- related traffic devices. 3.5.13. END OF ROAD WARNING SIGNS Type 3 barricade end of roadway markers shall be installed at the end of streets (except fully improved residential cul-de-sacs). For street ends where there is a significant elevation change adjacent or there is a need to control access, barrier rail, guardrail, or barricades may also be required. 3.5.14. MEDIAN STRIPING AND MARKERS ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-15 March 2024 When triangle islands are considered at street or driveway intersections, the curb shall be painted white and reflective markers installed at the corners. The ends of center medians shall be painted yellow and reflective markers installed at the ends and along the median. 3.5.15. REPLACEMENT OR RELOCATION OF EXISTING TRAFFIC SIGNALS When new construction affects elements of an existing traffic signal, or as determined by an approved traffic analysis, relocation and/or replacement is required. Public Works will coordinate replacement or relocation of existing traffic signals. 3.5.16. NEW TRAFFIC SIGNALS OR MODIFICATIONS TO EXISTING Installation of new traffic signals or modification of existing signals shall comply with the Standard Specifications for Public Works and the City of Fernley Development Code. Traffic Signals shall be controlled by a loop detection system only. Video-detection shall only be used when approved by Public Works. A Traffic Signal Cabinet shall contain a controller, Battery Backup System (BBS) and conflict monitor. The controller shall be a NAZTEC 980 TS2 Controller with EEPROM Moduleor approved equal. The BBS and conflict monitor shall all be NEMA compliant and shall be compatible with the specified controller. Traffic Signals must be installed with an Optical Preemption Detector and Optical Signal Processor (OSP). The Traffic Signals shall be installed with timing coordination through Global Positioning System (GPS) equipment and wireless connectivity. Traffic Lights and Turning Signals shall have 12 inch LED modules. Pedestrian Signals shall have a 16 inch Full Symbol Hand/Man indicator. Pedestrian push-buttons shall be ADA Compliant and must be installed with a 9 x 12 inch informational sign bezel above push-button. Public Works requires all new Traffic Signal installations to provide a minimum of four hours training for Public Works employees. Training shall include all signal operations, controller programming and timing coordination. In addition to employee training, controller timing sheets, conflict monitor certification and a comprehensive hard and electronic copy of all controller programming and signal configuration plans shall be submitted to Public Works prior to final acceptance. 3.5.17. SIGHT DISTANCE Prior to the dedication of any public rights-of-way, adequate sights distances shall be demonstrated at all intersections. The design of all new multifamily, commercial and industrial driveways shall provide for adequate sight distance. All above ground features, such as transformer boxes, shall be located or relocated so as to not adversely affect sight distance in proximity to street intersections and driveways. 3.5.18. BICYCLE LANES Traffic signs and/or pavement markings shall be installed on all street segments within or adjacent to a development to designate bicycle routes or bicycle lanes, as directed by Public Works or Community Development. 3.5.19. TRAFFIC CALMING The design and placement of speed bumps or other traffic calming improvements on new or existing streets shall be considered by Public Works on a case-by-case basis, as identified in an approved traffic analysis. ---PAGE BREAK--- City of Fernley Department of Public Works DESIGN STANDARDS S-16 March 2024 3.5.20. STREET LIGHTS All improvements plans are required to show streetlight locations. Street lights shall be installed at all intersections, midblock crosswalks, cul de sacs/hammerheads, and spaced at a minimum interval of 750’ along roadways. 3.6. TRAFFIC POLICIES, MATERIALS AND EQUIPMENT STANDARDS: Traffic policies, materials and equipment standards must comply with the applicable provisions of the MUTCD and Standard Specifications for Public Works Construction. It is the responsibility of the used of this manual to obtain the most current edition of those manuals.