Loading...
HomeMy WebLinkAbout1990-003 Council Ordinances• • • ORDINANCE NO. 03 -- 90 CITY OF LINO LAKES COUNTY OF ANOKA AN ORDINANCE AMENDING THE LINO LAKES CITY CODE, SECTION 302, STREET CONSTRUCTION STANDARDS The City Council of the City of Lino Lakes, Anoka County, Minnesota does ordain: I. Section 302. Street Construction Standards as originally written in the Lino Lakes City Code is hereby deleted. II. Section 302. Street Construction Standards is hereby rewritten as follows: 302.01 Purpose and Application Proper development and expansion of the City make it necessary to establish uniform standards for the construction and improvement of streets. It is the purpose of these standards to encourage well planned and efficient streets by establishing standards for design and construction. The following specifications and standards shall apply to all streets newly constructed or on which major improvements are undertaken. 302.02 Definitions PAGE 1 Subd. 1. Specifications. "Specifications" are a detailed description setting forth the dimensions, materials, workmanship and general conditions under which any give type of construction is to be undertaken and carried forward by a contractor. Subd. 2. City Engineer. "City Engineer" is a Registered Civil Engineer appointed by the Council to furnish engineering services in connection with any City work. The term also shall include his authorized representatives. Subd. 3. Right -of -Way. "Right -of -Way" is the land covered by a public road or other land dedicated for public use or for • • PAGE 2 ORDTNANCE NO. 03 -- 90 certain private use such as land over which a power line passes. Subd. 4. Street. "Street" is the pavement structure including subbase, gravel base, bituminous pavement, and curb and gutter. Subd. 5. Minor Arterial. "Minor Arterial" is a street designed as Minor Arterial by the appropriate State, County, or City authority having jurisdiction over the roadway. Subd. G. Collector Street. "Collector Street" is street designated as Collector Street by the appropriate State, County, or City authority have jurisdiction over the roadway. Subd. 7. Commercial/Industrial Street. "Commercial" or "Industrial Street" is any street designated as such by the City. Subd. 8. Local Street. "Local Street" is any street not designated as an arterial, minor arterial, collector street, commercial or industrial street. Subd. 9. Silt Fence. "Silt Fence" is a manufactured geotextile fabric appropriate for the use. Subd. 10. Subbase. "Subbase" is the imported material used to improve the stability and/or the strength of the subgrade. Subd. 11. Subgrade. roadbed at the gravel "Subgrade" is the part of the the elevation of the bottom of base. Subd. 12. Tack -Coat. "Tack -Coat" is a light coat of bituminous material applied to a surface prior to placing an overlaying mixture of bituminous material. Subd. 13. Street Access. "Street Access" is the right and ability to pass from a lot to a public street without the necessity of crossing private property. Subd. 14. Boulevard. "Boulevard" is the area of a right -of --way which is located between the street and property line on each side. • • • ORDINANCE NO. 03 - 90 Subd. 15. Testing Laboratory. "Testing Laboratory" is a company or department of a company which has recognized special expertise and skill in performing specialized tests intended to determine compliance with specifications. 302.03 Design Standards. The following standards will apply to each and every street hereafter constructed in the City. Definite and detailed specifications and plans shall be prepared for each individual project based upon its own location and special features. The detailed specifications and plans shall be in accordance with this general outline and Minnesota Department of Transportation (Mn/DOT) standards as applicable. Subd. 1 General Design Standards (1) Widths. Street right-of-way widths shall not be less than as follows: PAGE 3 Minor Arterial Collector Street Local Street Commercial and/or Industrial Service Drive (except for service drive adjacent to principal arterial). Cul-de-sac radius. 120 feet 80 feet 60 feet 80 feet. 60 feet 60 feet In cases where any temporary or permanent street has a right-of-way width less than 60 feet, the design and specifications for construction shall be considered as special. The design of such street shall be in such a way as the City Engineer deems best for the contemplated use. The petitioner shall be required to enter into special agreements pertaining to the construction of these streets. (2) Intersections. Insofar as practical, streets shall intersect at right angles. In no case shall the angle formed by the intersection of two streets be less than sixty (60) degrees. Intersections having more than four corners shall be prohibited. Adequate land for future intersection and interchange construction needs shall be provided for. (3) Deflections. When connecting street lines deflect from each other at one point by more • • • PAGE 4 ORDINANCE NO. 03 - 90 than ten (10) degrees, they shall be connected by a curve with a radius adequate to ensure a sight distance of not less than 500 feet for arterials, 300 feet for collectors, and 100 feet for all other streets. The Council may allow greater or lesser sight distances at the recommendation of the City Engineer. (4) Street Jogs. Street jogs with centerline offsets of less than 125 feet shall be avoided. (5) Access to Arterials. In the case where a proposed plat is adjacent to an arterial street, there shall be no direct vehicular or pedestrian access from individual lots to arterials unless unavoidable in the opinion of the City Council. Where direct access is deemed necessary, access shall include special requirements for turn around space on the lots, combination of driveways to the extent possible, and any other requirements of the authority having jurisdiction over the roadway. As a general requirement, access to arterials shall be at intervals of not less than one-fourth mile and through existing and established cross roads, where possible. (6) Local Streets. Local Streets shall be laid out so that their use by through traffic will be discouraged. (7) Hardship to Owners of Adjoining Property. The street arrangements shall not be such as to cause hardship to owners of adjoining property in platting their own land and providing convenient access to it. (8) Cul-de-sacs. Cul-de-sac use shall be held to a minimum. Cul-de-sacs when used shall be held to as short a distance as possible. The maximum length of a cul-de-sac shall be 500 feet, measured from the centerline of the street of origin to the end of the right-of- way. Islands in cul-de-sacs shall not be allowed. (9) Half Streets. Half streets shall be prohibited except where it will be practical to require the dedication of the other half when the adjoining property is subdivided, in which case the dedication of a half street may he permitted. • • • ORDINANCE NO. 03 - 90 (10) Private Streets. Private streets shall not be permitted, nor shall public improvements be approved for any private streets. Subd. 2 Detailed Design Standards (1) Pavements. The minimum standard for pavement design shall be as follows: PAGE 5 (a) Soil borings for each new street or improved street shall be required to facilitate design and provide bidding information to the construction contractor. The location and minimum number of such borings shall be as required by the City Engineer on each project. (b) A Stabilometer R -Value shall be determined from the soils samples by a qualified soils engineer and his calculations presented to the City Engineer. Because of the generally high and variable water table in Lino Lakes, the R -Value shall consider the worst possible soil moisture conditions. (c) The R -Value shall be used to determine the necessary thicknesses of the gravel base, bituminous binder course, and bituminous wearing course. (d) Streets shall be kept three (3) feet above the water table and design flood level of adjacent ponds, as measured from finished grade, where soil borings or other data indicates that the street subgrade may become saturated within three (3) feet of the finish street grade. Special construction methods such as use of select granular borrow subbase and/or properly designed drain tile may be employed as an alternative with the approval of the City Engineer. (e) All residential streets being constructed or improved shall be designed for a minimum of seven (7) ton design loading and shall be capable of carrying a minimum of 400 motor vehicles per day. If more than 400 vehicles per day are anticipated, base and pavement design shall consider the projected traffic. Collector, commercial and/or industrial (f) (g) ORDINANCE NO. 03 - 90 streets shall be designed for a nine (9) ton loading. Subbase, as necessary to meet the above criteria, shall be select granular borrow. A gravel base composed of 4" Mn/DOT Class 2 100% crushed compacted or 5" Mn/DOT Class 5 compacted shall be required as a minimum. (h) The minimum bituminous pavement shall consist of 2" compacted thickness of binder course conforming to the requirements of Mn/DOT Specification 2331, Type 31, and 1-1/2" compacted thickness of wearing course conforming to the requirement of Mn/DOT Specifications 2331, Type 41. (2) Curb and Gutter. Concrete curbs and gutters shall be required for all streets. Concrete curb and gutter for residential streets shall be D-412 with B-618 at all catch basins, intersections, and cul-de-sac entrance radii unless otherwise approved by the City. Collector, commercial and industrial streets shall have B-618 concrete curb and gutter. Expansion joints shall be installed every 50 feet. (3) Pavement Widths. Minimum pavement widths, as measured from back of curb to back of curb, shall be 32 feet for residential streets. Collector, commercial and industrial streets shall be designed to a width determined by the City Engineer. (4) Curb Radii. The minimum curb radii to back of curb shall be as follows: (5) PAGE 6 (a) Intersection and cul-de-sac entrance radii shall he 20 feet. (b) Cul-de-sac radii shall be 46 feet. (c) Collector, Commercial, and Industrial streets shall have radii as determined by the City Engineer. Grades. All centerline grades shall be at least five -tenths (0.5) percent and shall not exceed four (4) percent for arterial and • • • ORDINANCE NO. 03 - 90 collector streets and six (6) percent for local streets. Vertical curves appropriate for the street shall be provided. The minimum curb grade shall be five -tenths (0.5) percent, except curbs in cul-de-sacs shall have a minimum grade of six -tenths (0.6) percent. (6) Boulevards. Boulevard design and use shall be as follows: (a) Boulevards shall have a grade slope of 1/4" per foot for the eight (8) feet adjacent to the back of curb. All slopes beyond this shall be 3:1 ratio, maximum. (b) All boulevards shall be sodded or seeded with mulch in accordance with Mn/DOT Specification 2575, and shall include three (3) inches of acceptable topsoil of a turf growing medium to meet Mn/DOT Specification 3877. All disturbed areas beyond the boulevard shall also be sodded or seeded as above. (c) Street trees having a trunk diameter (measured 12 inches above the ground) of not less than two and one-half inches shall be planted along all streets, where sufficient trees do not exist. These trees shall be placed at the property line. One tree per lot shall be required. This requirement will be satisfied and it is preferable if an equivalent number of trees of the same size are planted in a naturalistic way in the front yards of the adjoining lots. (d) Private utility placement shall occur under the established guidelines of the City of Lino Lakes. 302.04 Construction Start -Up Procedure Subd. 1 Engineer Required. Each new street project or street improvement shall have plans and specifications which have been prepared and signed by a Minnesota Registered Engineer. A copy of the plans and specifications shall be submitted to the City Engineer or Public Works Director and approved by the City Engineer and City Council. PAGE 7 Subd. 2 Development Contract. Prior to • • • ORDINANCE NO. 03 - 90 construction of a project by or on behalf of a developer, the developer must submit a letter of credit in the amount of 150% of the estimated construction cost or enter into a development contract. Subd. 3 Engineering Overview. The City shall be its engineering staff or the City Engineer furnish a full time project representative who shall be present during all work on street construction or improvement of streets. The developer of all new streets shall reimburse the City for all costs incurred for the overview of such project. Subd. 4 Preconstruction Conference. A preconstruction conference shall be held at which all parties having interest in the project may discuss potential project impacts and procedures. Information which must be provided includes a construction schedule; proof of required insurance; required permits; traffic control schedule; name, address and phone number of the contractor; name of the testing laboratory to be used on the project; the project engineer's name, address and phone number; the name of the materials suppliers; and evidence that the proposed base material and bituminous material has been tested and conforms with the requirements and specifications. Subd. 5 Notification. At least three working days prior to construction, the Public Works Director or City Engineer shall be notified in writing that construction operations will begin. Subd. 6 Grade Stakes. Grade stakes shall be required before any street construction begins. Blue tops must be provided for the subbase and gravel base operations. The project engineer is to provide a copy of the staking notes to the City of Lino Lakes so spot checks can be made of the grades to determine if they conform with plan elevation. 302.05 Construction Methods PAGE 8 The following construction methods are general and will apply to each and every • • • PAGE 9 ORDINANCE NO. 03 — 90 street hereafter constructed in the City. Subd. 1. Silt Fence. Silt fence shall be placed as directed or approved by the City Engineer prior to construction to provide for erosion control. Additional silt fence shall be installed during construction as deemed necessary by the City Engineer or Public Works Director to address site conditions. Subd. 2 Clearing & Grubbing. Areas which will be disturbed by street construction shall be stripped of all vegetation, trees and topsoil. Acceptable topsoil may be appropriately stockpiled for reuse. Subd. 3 Utilities. Sanitary sewer, water and storm sewer construction shall be completed prior to or in conjunction with street construction. Subd. 4 Compaction. The subbase and gravel base shall be compacted to a minimum of 1000 of standard proctor density. Pavement shall be compacted by the ordinary compaction method. Subd. 5 Connecting to Existing Streets. Connections to existing paved streets shall require a straight edge cut and tack coat applied prior to paving of the new street. Subd. 6 Bituminous Paving. Successive pavement construction shall be tacked to prior work in accordance with Mn/DOT Specification 2356. Subd. 7 Turf Establishment. Work required for turf establishment shall be completed during the same construction season in which the streets were rough graded. Subd. 8 Testing. All tests herein required shall be taken by an accredited soils testing laboratory. Tests shall be paid for by the developer on a developer installed project. Tests will include but not be limited to: • • • PAGE 10 ORDINANCE NO. 03 — 90 (1) Density Tests. Density tests will be taken on the subbase and base courses by a qualified testing laboratory. (2) Test Rolling. This work shall consist of testing the bearing capacity of the subgrade prior to gravel base construction by rolling with heavy equipment. Test rolling equipment shall be in accordance with Mn/DOT Specification 2111.2 or the contractor may use a loaded dump truck which will deliver a minimum load of nine (9) tons per axle. Test rolling shall be performed when the grading is completed within 0.1 foot of the grade staked by the Engineer and shall cover the entire top width of the pavement structure. Test rolling shall be performed only when the Engineer and Contractor mutually agree that the subgrade is acceptable for test rolling. (3) Concrete Air Test. Air tests will be taken by a qualified testing laboratory. (4) Concrete Cylinder. Concrete cylinders will be cast and the compressive strength determined by a qualified testing laboratory. (5) Bituminous Samples. Bituminous samples shall be taken during placement and tested by a qualified testing laboratory to check the bituminous content, gradation and Marshall density of the bituminous material. (6) Test Frequencies. Test frequencies shall be determined by the City Engineer or Public Works Director. With the exception of test rolling (paragraph (2)), a minimum of ORDINANCE NO. 03 - 90 • two tests will be required. 302.06 Construction Completion & Warranty Subd. 1. Building Construction Permit. No permit shall be issued for the construction of a new building in a subdivision until the rough grading of the public street providing access thereto has been completed, and where applicable, sewer and water construction in connection therewith has been completed or is under construction. Occupancy permits for residents in a new subdivision shall not be issued until one course of bituminous surfacing is in place. Subd. 2. Partial Maintenance. After a street has been completed to a point where curb and gutter, the base course, and the bituminous binder course are installed and after building permits have been issued for construction of buildings on property fronting on said streets, the street shall be placed on the routine maintenance list of the City. Snow plowing operations will be carried on in the winter time. This shall not in any way constitute final acceptance by the City and such maintenance or partial acceptance by the Council shall not have any effect upon agreements existing between the City and the developer for further improvements on such streets. The wearing course shall not be placed until 80% of the housing units in the development are substantially completed. Subd. 3. Sealcoating. Approximately two years after the placement of the wearing course mixture, a sealcoat consisting of a CRS emulsified asphalt conforming to Mn/DOT Specification 3151 applied at the rate of 0.35 gallons per square yard and FA -3 aggregate conforming to Mn/DOT Specification 3137 applied at the rate of 35 lbs. per square yard shall be placed. PAGE 11 • • • PAGE 12 ORDINANCE NO. 03 — 90 Subd. 4. Warranty. All new streets shall be warranted by the developer or contractor as to good workmanlike construction and to meet all City requirements for a period of one (1) year from the time the final inspection of such street has been completed and the Council has accepted the same for full City maintenance. This section shall not relieve the developer or contractor from the usual contract obligations of good workmanlike construction. 302.07 When a contractor's letter of credit has been established, it may be reduced to an amount equal to 1500 of the estimated cost of construction of the wearing surface and sealcoat upon completion of all other construction items, including the gravel base or bituminous binder course; and will be further reduced to an amount equal to 150% of the estimated cost of the bituminous sealcoat upon the completion of the bituminous wearing course. Prior to acceptance by the City, the developer on developer installed projects shall deposit with the City the sum of 20%, in the form of a surety bond, cash, or other form of security approved by the City Council, of the total original cost of construction to assure performance in compliance with this section. Variations and Exceptions. The Council may permit variations from these requirements in specific cases which, in its opinion, do not affect the general sense of this chapter. Additional requirements shall be complied with as imposed by the City Engineer, Public Works Director and City Council. Minor variations to the requirements of this section may be allowed with the concensus of the Public Works Director, City Engineer and City • • • ORDINANCE NO. 03 - 90 Administrator. Save as above amended, Section 302 of the Lino Lakes City Code shall stand as initially passed and as previously amended. This ordinance shall be in full force and effect from and after its passage and publication according to City Charter. Passed by the City Council this 29th day of May , 1990. Harold L. Bisel, May r Marilyn✓G. Anderson, Clerk -Treasurer PAGE 13