In acting upon subdivision applications, the Planning Board shall require compliance with the design standards contained in this Article, and the subdivider shall observe such standards and principles of land subdivision in the design of each subdivision or portion thereof.
A. 
The subdivision plat must be consistent with and encourage development patterns compatible with the best interests of the citizens of the city. To the extent to which a Master Plan or Official Map shall have been adopted, the subdivision shall conform to the proposals and conditions shown thereon.
B. 
The tracts shall be adequately drained and the streets shall be of sufficient width, suitable grade and suitably located to accommodate the prospective traffic, to provide access for fire fighting equipment to buildings and to be coordinated so as to compose a convenient system relating properly to the existing street system.
C. 
All lots shown on the plat shall be adaptable for the intended purposes without danger to health or peril from flood, fire, erosion or other menace.
D. 
If portions of the Master Plan contain proposals for drainage rights-of-way, schools, parks or playgrounds within the proposed subdivision or in its vicinity, or if standards for the allocation of portions of subdivisions for drainage rights-of-way, school sites, park and playground purposes have been adopted, before approving subdivisions the Planning Board may further require that such drainage rights-of-way, school sites, parks or playgrounds be shown in locations and sizes suitable for their intended uses. The Planning Board is hereby permitted to reserve the location and extent of school sites, public parks and playgrounds shown on the Master Plan or any part thereof for a period of one year after the approval of the final plat or within such further time as agreed to by the subdivider. Unless during such one-year period or extension thereof the city shall have entered into a contract to purchase or instituted condemnation proceedings according to law for said school site, park or playground, the subdivider shall not be bound by the proposals and such areas shown on the Master Plan. This provision shall not apply to the streets and roads or drainage rights-of-way required for final approval of any plat and deemed essential to the public welfare.
A. 
The arrangement of streets not shown on the Master Plan or Official Map shall be such as to provide for the logical extension of existing streets and to provide for street access for remaining land areas.
B. 
Minor streets in residential areas shall be so designed as to discourage through traffic.
C. 
Subdivisions abutting arterial streets or regional highways shall provide a marginal service road or shall front buildings upon a minor street parallel to the arterial street and removed from it by the depth of a lot with a buffer strip for planting or some other means of separation of through and local traffic as the Planning Board may deem appropriate.
D. 
The right-of-way width shall be measured from lot line to lot line and shall not be less than 50 feet in any case; when shown at a greater width on the Master Plan or Official Map, such greater width shall be required.
E. 
No subdivision showing reserve strips controlling access to streets shall be approved unless the control and disposal of land comprising such strips has been placed in the governing body under conditions approved by the Planning Board.
F. 
Subdivisions that adjoin or include existing streets that do not conform to widths shown on the Master Plan or Official Map or the street width requirements of this chapter shall provide for the dedication of additional width along either one or both sides of said street of substandard width. If the subdivision is along one side only of said street, 1/2 of the required extra width shall be dedicated.
G. 
Grades of arterial and collector streets shall not exceed 6%. Grades of other streets shall not exceed 10%. No street shall have a minimum grade of less than 1/2 of 1%.
H. 
Street intersections shall be as nearly at right angles as circumstances will allow and in no case shall be less than 60°. The block corners at intersections shall be rounded at the curbline or property line with a curve having a radius of not less than 15 feet.
I. 
Street jogs with center-line offsets of less than 125 feet shall be avoided.
J. 
A tangent at least 100 feet long shall be introduced between reverse curves on arterial and collector streets.
K. 
When connecting street lines deflect from each other at any one point by more than 10° and not more than 45°, they shall be connected by a curve with a center-line radius of not less than 100 feet for minor streets and 300 feet for arterial and collector streets.
L. 
All changes in grade shall be connected by vertical curves of sufficient length and curvature to provide a smooth transition and proper sight distance.
M. 
Permanent dead-end streets (culs-de-sac) shall not be longer than 600 feet and shall provide a circular turnaround at the end with a right-of-way radius of not less than 50 feet and tangent whenever possible to the right side of the street. Temporary dead-end streets shall provide a similar turnaround and provisions for future extension of the street and reversion of the excess right-of-way to the adjoining properties.
N. 
No street shall have a name which duplicates the name of an existing street or is so similar to the name of an existing street as to be easily confused with it. The continuation of an existing street shall have the same name.
A. 
Block length and width or acreage within bounding roads shall be such as to accommodate the size of lot required in the area by the Zoning Ordinance[1] and to provide for convenient access, circulation control and safety of street traffic.
[1]
Editor's Note: See Ch. 175, Zoning.
B. 
For commercial, group housing or industrial use, the block size shall be sufficient in the judgment of the Planning Board to meet all land and yard requirements for such use.
A. 
All lots created by subdivision shall conform strictly to the requirements of the Zoning Ordinance[1] as to area and dimensions and as to adequacy of space and grade to provide off-street parking requirements specified in that ordinance.
[1]
Editor's Note: See Ch. 175, Zoning.
B. 
Insofar as practical, side lot lines shall be at right angles to straight streets and radial to curved streets.
C. 
Each lot must front upon an improved street at least 50 feet in width, except lots fronting on streets described in § 150-36F of this Article.
D. 
Where extra width has been dedicated for the widening of existing streets, lots shall begin at such extra-width line and all setbacks shall be measured from such line.
E. 
Where there is a question as to the suitability of a lot or lots for their intended use due to factors such as rock formations, flood conditions, drainage or similar circumstances, the Planning Board may, after adequate investigation, withhold approval of such lots.
A. 
In large-scale developments, easements along rear property lines or elsewhere for utility installation may be required by the Planning Board. Such easements shall be of the width and location determined by the Planning Board after consultation with the public utility companies or city departments concerned.
B. 
Where a subdivision is traversed by a watercourse, drainageway, channel or stream, there shall be provided a stormwater easement or drainage right-of-way conforming substantially with the lines of such watercourse or channel, and such further width or construction, or both, as the Planning Board may deem adequate for the purpose.