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(A) Portland cement concrete sidewalks shall be provided in the park strip in accordance with the typical street section of the Circulation Element of the General Plan, as amended, and in accordance with the standard specifications of the city.
(B) Sidewalks shall be at least four feet wide, exclusive of curbs, and not less than three and five-eights inches thick.
(C) Planting strips between the curb and sidewalk, if provided, shall not be less than four feet six inches wide.
(D) Walkways shall be constructed with portland cement concrete, or other materials approved by the City Engineer, for the full width of the easement. The concrete thickness shall be not less than three and five-eights inches thick.
(E) Bicycle pathways shall be provided where required and designed in accordance with construction details approved by the City Engineer.
('66 Code, § 9-4.618) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
(A) Curbs shall be required on all streets.
(B) All curbs shall be city standard vertical curbs constructed of portland cement concrete and poured monolithicly with the gutter.
(C) A paved turnaround shall be provided at the ends of cul-de-sac streets. The radius for the edge of the pavement or curb line shall be 37 feet minimum.
(D) Curbs and property lines at street intersections and turnarounds shall be constructed on a curve having a radius equal to that set forth as follows, unless otherwise specified by the City Engineer:
Standard Radius for Curb Returns | Standard Radius for Property Lines | |
All residential intersections and alleys
|
30 ft.
|
20 ft.
|
Cul-de-sac turn-arounds
|
37 ft.
|
47 ft.
|
Industrial streets
|
30 ft
|
20 ft.
|
Commercial streets
|
30 ft.
|
20 ft.
|
('66 Code, § 9-4.619) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
The subdivider shall furnish and place such guard rails, guide posts, barricades, traffic warning signs, pavement markers, and reflector signs at the ends of blind or dead-end streets, along roadside ditches, at obstructions, at street intersections, and at other locations for the protection of pedestrians and vehicles as may be specified by the City Engineer.
('66 Code, § 9-4.620) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
(A) The subdivider shall construct permanent survey monuments at the locations specified on the filed subdivision map. The monuments and appur-tenances shall conform to approved standards and details as prescribed by the City Engineer and as required in Article 9 of the Subdivision Map Act.
(B) The allowable field survey error shall not exceed one part in 5,000 in distance or 30 seconds in angular measurement.
('66 Code, § 9-4.621) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
(A) (1) The subdivision shall be protected from inundation, flood sheet overflow, ponding of local storm waters, springs, and other surface waters. The design of improvements shall be such that water occurring within the subdivision will be carried off such subdivision without injury to any improvements, residential sites, or residences to be installed on sites within the subdivision or to adjoining areas.
(2) Waters occurring within the subdivision shall be carried to a storm drainage facility or to a natural watercourse by such improvements as may be required to meet the design standards set forth in this article. The drainage design within the subdivision shall accommodate anticipated future development within the drainage area. Any off-tract outlet drainage facility required to carry storm water from the proposed subdivision to a defined channel or conduit shall be made adequate for the ultimate stage of development in the drainage area.
(B) (1) Runoff quantities shall be determined by the modified rational method, using basic data supplied by the Flood Control District for the frequency of occurrence stipulated in this division.
(2) Drainage facilities directly affecting the proposed subdivision shall have the following minimum capacities:
(a) Major drainage channels and conduits shall have sufficient capacity to contain a 50 year frequency of occurrence runoff.
(b) Secondary drainage channels and conduits shall have sufficient capacity to contain a 25 year frequency of occurrence runoff.
(c) Minor drainage facilities shall have sufficient capacity to contain a 10 year frequency of occurrence runoff.
(C) Waters within street areas shall be placed in closed conduits where the maximum depth of computed flow exceeds the capacity of the gutter, creates a traffic hazard, or endangers property. Storm water in natural or artificial drainage channels shall be placed in closed conduits or concrete-lined channels where the quantity does not exceed 80 cubic feet per second, except that the Council may recommend that an existing natural watercourse endowed with significant natural beauty in the form of trees, shrubs, or scenic attractions in such instances may be utilized for an open drainage facility with such drainage improvements as may be designated by the Flood Control District when such areas are dedicated as an easement.
(D) The design of drainage channels, conduits, and appurtenances shall conform with the design standards of the Flood Control District.
(E) The proposed subdivision shall not cause or contribute to inundation or flood hazard conditions of existing inhabited areas, nor shall the improvement of the subdivision add sufficient runoff to cause damage to uninhabited areas.
(F) The Council may establish drainage fees as permitted in Article 5 of the Subdivision Map Act (Cal. Gov't Code §§ 66483 et seq.).
('66 Code, § 9-4.622) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
(A) Culverts under driveway entrances for roadside ditches shall be adequate to carry the design flow but shall not be less than 12 inches inside diameter.
(B) Culverts crossing streets shall be of a size adequate to carry the design flow but shall not be smaller than 18 inches inside diameter.
(C) All galvanized corrugated metal pipe intended for use within the roadway shall be bituminous coated and shall be of the gauge recommended by the Engineering Division for the cover and service conditions required. Additional protective coatings or paving may be required for severe service conditions. The gauge of pipe proposed at each location shall be noted on the improvement plan.
(D) Culverts for use outside the roadway may be of any approved type and strength to meet field conditions.
(E) Roadside ditch sections shall be subject to the approval of the City Engineer as to shape, size, gradient, lining, and location within the road right-of-way and shall have the required hydraulic capacity.
(F) Roadside ditches and gutter shall be provided to carry the drainage from the road and tributary lands without damage to the roadbed or abutting property.
(G) The maximum gradient for earth ditches shall not exceed 4% nor be less than 1%. The minimum gradient for lined or paved ditches shall not be less that 0.5%.
(H) The edge of the earth ditch nearest the pavement shall not be closer than three feet to the outer edge of the paved shoulder of the road.
(I) Drainage within the street right-of-way, but outside the surfaced area, shall be controlled to prevent erosion.
(J) Catch basins shall be of the design approved by the City Engineer. Inlets shall be so designed that water shall be diverted into the catch basins without a reversal of direction of the flow of the water.
(K) Drainage structures shall account for tidal action and flood stage where applicable. Drainage shall be accomplished by gravity without surcharge in catch basins. The tops of curbs shall be located at an elevation 10 feet or higher above mean sea level as per United States Geological Survey, 1929 sea level datum.
('66 Code, § 9-4.623) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
(A) The maximum design velocities for earth channels shall be eight feet per second for major channels, seven feet per second for secondary channels, and six feet per second for minor channels.
(B) The minimum velocities at design capacity for earth channels shall be three feet per second.
(C) Where the outlet velocity from a closed conduit or lined channel exceeds the maximum allowable velocity for earth channels, suitable protective works, such as riprap or an energy dissipator, shall be provided.
('66 Code, § 9-4.624) (Ord. 275-C-S, passed 3-11-75) Penalty, see § 9-4.903
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