Dunsmuir Municipal Code Ch. 16.20 Design Standards

A. The street and highway design of a subdivision shall conform both in width and alignment to any master plan of streets and highways prepared by the planning commission, and rights-of-way for any streets or highways indicated on the master plan shall be dedicated.

B. The street and highway design may be required to conform to any proceedings affecting the subdivision which may have been initiated or approved by the city council or by other legally constituted bodies of the city, county or state. If a parcel of land to be subdivided includes a portion of the right-of-way to be acquired for a highway, freeway, street or road, the subdivider may be required to either dedicate or withhold from the subdivision all the area included in such right-of-way.

C. The following general conditions shall apply to street and highway design:

1. All streets shall be offered for dedication, and private streets shall not be permitted; provided, that exceptions may be approved as provided in this chapter. So far as practicable, streets shall be in alignment with existing adjacent streets by continuations of the centerlines thereof, or by adjustment by curves. Wherever streets are not in alignment, their centerlines shall be offset by not less than one hundred (100) feet.

2. Street centerlines shall be required to intersect one another at an angle as near to a right angle as is practicable with consideration to topographical conditions.

3. Where necessary to give access to, or permit a satisfactory future subdivision of adjoining land, streets shall extend to the boundary of the property and the resulting dead-end or cul-de-sac streets may be approved without a turnaround. In all other cases, a turnaround shall have a minimum right-of-way radius of fifty (50) feet and a curb radius of forty (40) feet. No cul-de-sac street shall exceed six hundred (600) feet in length from the center of the turnaround to the centerline of the intersecting street.

4. Street intersections shall be rounded with curves having a minimum radius of twenty (20) feet at property lines. A greater curve radius may be required of streets intersecting at other than right angles.

5. The centerline curve radii on all streets and highways shall conform to accepted engineering standards of design.

6. No major or secondary street shall have a grade of more than ten (10) percent unless, because of topographical conditions or other exceptional conditions, the planning commission determines that a steeper grade is necessary. No street or highway shall have a grade of less than five-tenths of one percent.

7. Reserved strips controlling the access to public ways shall be under the control of the city council.

(Prior code § 18-17; Ord. No. 549, § 1, 7-30-2015)

Cross reference— As to streets and sidewalks generally, see Title 12 of this code.

Streets and highways shall not be of lesser right-of-way and curb to curb widths than those set forth as follows:

* Face to face of vertical curbs: between flow lines of roll curbs of valley gutters.

** The lesser rights-of-way shown may be approved when utility easements not less than eight feet wide are dedicated adjacent to rights-of-way on each side thereof. Such easements may be approved on one side of service roads which are parallel and adjacent to major or secondary streets or highways, or freeways.

*** May be permitted on standard or minor subdivision streets or cul-de-sacs where lot frontages average one hundred (100) feet or more and lot areas average twelve thousand (12,000) square feet or more, or where approved average street grade exceeds fifteen (15) percent, and where zoning and deed restrictions prohibit future reduction of lot widths or areas. Rolled valley gutters and four- to-six-foot paved shoulders may be permitted in lieu of concrete curbs, gutters and sidewalks.

(Prior code § 18-18; Ord. No. 549, § 1, 7-30-2015)

When lots proposed for commercial or industrial uses fronting on any major or secondary street or highway, the subdivider may be required to dedicate and improve a parallel service road to provide ingress and egress to and from such lots; or in lieu thereof, if approved by the planning commission, the subdivider may dedicate for public use and improve an area adjacent to such lots for off-street parking purposes. When any lots proposed for residential use front on a state highway or a major street, the subdivider may be required to dedicate and improve a service road at the front of such lots, or to back lots to the highway or major street. In addition to any requirements for a service road, the planning commission may require adequate off-street parking areas for all lots proposed for commercial or industrial use.

(Prior code § 18-19; Ord. No. 549, § 1, 7-30-2015)

When the rear or side lines of any lots border a state highway or major street, the subdivider may be required to execute and deliver to the board of supervisors an instrument prohibiting the right of ingress and egress to such lots across the sidelines of such highway. When the rear or side lines of any lots border any freeway, state highway or parkway, the subdivider may be required to dedicate and improve a planting strip adjacent thereto.

(Prior code § 18-20; Ord. No. 549, § 1, 7-30-2015)

When lots are proposed for commercial or industrial uses, alleys at least twenty-four (24) feet in width may be required at the rear thereof.

(Prior code § 18-21; Ord. No. 549, § 1, 7-30-2015)

All street names shall be approved by the planning commission, and no duplication of street names shall be permitted.

(Prior code § 18-22; Ord. No. 549, § 1, 7-30-2015)

A. The subdivider may be required to grant easements not less than eight feet in width along either side of rear lot lines for public utility, sanitary sewer and drainage purposes. Easements for overhead pole lines and anchors shall be provided at the rear of all lots, except where alleys are available. Underground utility installations may be required to be installed by the subdivider in particular cases.

B. Watercourse easements may be required as specified by the planning commission.

(Prior code § 18-23; Ord. No. 549, § 1, 7-30-2015)

The subdivider may be required to dedicate and improve twelve (12) foot walkways through blocks to provide access to schools, parks and other public areas.

(Prior code § 18-24; Ord. No. 549, § 1, 7-30-2015)

A. The sizes and shapes of lots shall be in conformance with any regulations effective in the area of the proposed subdivision, and in conformance with good standards of subdivision design as determined by the planning commission.

B. Lots which are to be served by neither an approved domestic water supply nor sanitary sewer system shall have areas as specified by the health officer in each case.

C. The size of lots which are to be served by either an approved domestic water supply or sanitary sewer system, but not both, shall be in conformance with the zoning standards applicable to the subdivision, or as otherwise required by the health officer.

D. The average lot depth shall not exceed three times the average width.

E. The sidelines of all lots, so far as possible, shall be at right angles to streets or radial or approximately radial to curved streets and to the center points of cul-de-sac circles.

F. No lot shall be divided by a city or county boundary line.

G. Interior lots having double frontage may be permitted only where topographical or unusual conditions justify such lots.

(Prior code § 18-25; Ord. No. 549, § 1, 7-30-2015; Ord. No. 571, § I, 9-16-2021)

Blocks shall be not more than one thousand two hundred (1,200) nor less than four hundred (400) feet in length and shall be a width to contain two tiers of lots of legal and approved dimensions; except, that the planning commission may approve variations of the foregoing when it finds that pre-existing improvements or physical or natural features or conditions justify such variations.

(Prior code § 18-26; Ord. No. 549, § 1, 7-30-2015)

In all respects, the subdivision will be considered in relation to the master plan of the city or any part thereof, or preliminary plans made in anticipation thereof.

(Prior code § 18-27; Ord. No. 549, § 1, 7-30-2015)

Two copies of proposed covenants of restrictions shall be filed with the tentative map, and two copies of any revisions thereof shall be filed with the final map.

(Prior code § 18-28; Ord. No. 549, § 1, 7-30-2015)

Any land proposed to be divided or subdivided which is subject to inundation or flooding by storm, overflow or other causes, or having a water table within three feet of land surface, shall be indicated on all subdivision maps, and proposed filling, drainage or other preventive or corrective measures shall be indicated.

(Prior code § 18-29; Ord. No. 549, § 1, 7-30-2015)

A. The subdivider may be required to reserve sites for schools, parks and other public areas as shown on the master plan or as required by the planning commission, which sites shall be offered for acquisition by the appropriate public agency within a reasonable period of time at approximately the subdividers land purchase cost plus his financing and other additional reasonable costs.

B. In cases where the master plan proposes a park or recreation site to serve the area in which the proposed subdivision is located, the subdivider may offer for dedication an acceptable site or pay a fee of one hundred dollars ($100.00) per acre of subdivision to a fund to be used for park or recreation development to benefit the particular area.

C. In cases where the master plan proposes a park or recreation site to serve the area in which the proposed subdivision is located, the subdivider may offer for dedication an acceptable site or pay a fee of one hundred dollars ($100.00) per acre of subdivision area to a fund for park or recreation development to benefit the particular area.

D. In cases where drainage facilities are necessary on an area-wide basis to permit safe, healthful and convenient development of the area, the subdivider shall pay a prorata share of such facilities cost, as determined by the planning commission.

(Prior code § 18-30; Ord. No. 549, § 1, 7-30-2015)