1992-012 Council Ordinances - Laserfiche WebLink

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(f) Subbase, as necessary tomeet the above criteria, shall be select granular borrow. (g) A gravel base composed of 4" Mn/DOT Class 2, 100% crushed compacted 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 Specifications 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 r"* 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: (a) Intersection and cul-de-sac entrance radii shall be 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. (5) Grades. All centerline grades shall be at least five-tenths (0.5) percent and shall not exceed four (4) percent for arterial and collector streets six (6) percent for local streets. Verical 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" 53