A. 
Purpose. The design standards and requirements outlined in this article will be utilized by the Planning Commission and Council in determining the adequacy of all plans for proposed subdivisions and land developments.
B. 
Conformance with other laws and regulations. Development shall be planned, reviewed, and carried out in conformance with all Borough, county, state and other applicable laws, ordinances and regulations, as amended.
C. 
More restrictive standards. Whenever other Borough ordinances or regulations impose more restrictive standards and requirements than those contained herein, those other regulations shall be observed.
A. 
Land subject to hazards of life, health and safety, such as strip mine land, quarry land, open ditches and land subject to flooding and subsidence, shall not be subdivided for residential purposes. All such hazards shall be identified and eliminated by the owner or developer, and guarantees shall be provided to the Borough that adequate safeguards against such hazards have been provided.
B. 
No land shall be subdivided in a manner that landlocks or compromises the use or future development of contiguous or adjacent land areas.
C. 
All construction improvements shall comply with the latest version of Canonsburg Borough Standard Construction Details.
A. 
Land shall be suited for the purpose for which it is to be subdivided and meet minimum lot sizes as directed by Chapter 170, Zoning, of the Code of Canonsburg Borough.
B. 
Every lot shall abut on a public dedicated street.
C. 
The following general provisions shall apply to all subdivisions of land:
(1) 
All lot area and minimum yard and setback designations as required by Chapter 170, Zoning, of the Code of Canonsburg Borough shall be dimensioned from public rights-of-way where applicable. No lot area requirement or setback shall be computed from within a public right-of-way.
(2) 
The frontage width of lots abutting a cul-de-sac shall be determined as the width along the building line. The yard and setback requirements will be calculated from the property line along the average length of front, sides, and rear of the structure.
(3) 
All lot lines shall be set perpendicular or radial to the center line of the street whenever possible.
(4) 
Lots abutting local streets shall front on the streets that parallel the long dimension of the block, if possible.
(5) 
All lots shall abut by their full frontage on a publicly dedicated street. Lots abutting on a private street or easement shall not be approved, except that lots developed on private streets in existence prior to the enactment of this chapter may be approved. Private streets shall not be extended to permit additional lot development. (See § 151-404Q of this chapter.)
(6) 
No land shall be graded, cut, or filled so as to create a slope exceeding a vertical rise of one foot for each two feet of horizontal distance between abutting lots, unless a retaining structure is installed in accordance with specifications approved by the Borough Engineer and Council.
D. 
Lots laid out for residential purposes shall be subdivided in accordance with the provisions of Chapter 170, Zoning, of the Borough Code with respect to lot area, lot width, setbacks, yard requirements and other applicable requirements.
E. 
Lots and tracts of land laid out for nonresidential purposes shall be subdivided in accordance with the provisions of Chapter 170, Zoning, of the Borough Code with respect to lot area, lot width, setbacks, yard requirements, and the following additional guidelines:
(1) 
The location of areas designated for structures, points of ingress and egress, internal site accessways, off-street parking and loading areas and generalized land use proposals shall be included as a part of all final plan applications for nonresidential purposes.
(2) 
The Planning Commission may recommend, and the Council may authorize, block platting in place of lot platting for nonresidential purposes to provide the developer maximum flexibility, provided that no block shall be subdivided in such a way that any subsequent lots would be smaller than the minimum size authorized by Chapter 170, Zoning, of the Borough Code.
(3) 
The developer shall demonstrate every effort to protect adjacent existing or potential residential development sites through the provision of guarantees or other appropriate procedures or amenities designed and established for the purpose of mitigating adverse influences resulting from business activities.
A. 
Proposed streets shall be properly related to Borough, county, and state road and highway plans that have been prepared and officially adopted and/or filed as prescribed by law.
B. 
Streets shall be logically related to the topography to achieve usable lots and reasonable grades.
C. 
Internal subdivision streets shall be laid out to discourage through traffic, but provisions to coordinate adjacent area streets will be generally required.
D. 
Where a subdivision plan abuts or contains an existing or proposed arterial street, the Council may require local access streets, reverse frontage lots, or such other treatment that will provide protection for abutting properties, reduction in the number of intersections with arterial streets, and separation of local and through traffic.
E. 
New half or partial streets will not be permitted, except where essential to reasonable subdivision of a tract in conformance with the other requirements and standards of this chapter and where, in addition, satisfactory assurances for dedication of the remaining part of the street is secured.
F. 
Wherever a tract to be subdivided borders an existing half or partial street, the other part of the street shall be plotted within such tract.
G. 
Dead end streets shall be prohibited except as stubs to permit future street extensions or when designed as culs-de-sac. Permanent cul-de-sac streets may be permitted when it is clear that through traffic at such a street end is not essential to the existing or future street system in that district, or to the development of adjacent properties in the area.
(1) 
Such streets, where permitted, shall not exceed 1,200 linear feet, including the cul-de-sac. Temporary dead-end street stubs shall terminate with culs-de-sac if said street extensions are not made within one year unless said street stubs are 250 feet or less in length and accommodate no more than four building lots.
(2) 
The turnaround shall have an outside pavement radius of not less than 40 feet and a right-of-way radius of not less than 50 feet.
(3) 
The minimum grade of the turnaround portion of the cul-de-sac shall be 1%.
(4) 
The maximum grade of the turnaround portion of the cul-de-sac shall be 5%.
(5) 
The minimum width of all lots abutting a cul-de-sac shall be 50 feet on the arc at the right-of-way line.
H. 
If lots resulting from original subdivision are large enough to permit additional subdivision, or if a portion of the tract is not subdivided, adequate street rights-of-way shall be provided as necessary to allow for future development activity.
I. 
Reserve strips, restricting or controlling access to adjacent streets or properties shall be prohibited. This requirement shall apply equally where the end point of a cul-de-sac touches portions of an adjacent tract or land parcel. In such situations, a minimum fifty-foot right-of-way shall be recorded on the plan to provide for future street extensions.
J. 
Street classification.
(1) 
Local streets:
(a) 
ADT < 1,000.
(b) 
Operating speed < 25 mph.
(2) 
Collector streets:
(a) 
1,000 < ADT < 5,000.
(b) 
Operating speed > 25 mph.
(3) 
Arterial streets.
(a) 
ADT > 5,000.
(b) 
Operating speed >35 mph.
K. 
Street alignment.
(1) 
Whenever street lines are deflected, connection shall be made by horizontal curves.
(2) 
The minimum radius at the center line of horizontal curves shall be:
(a) 
Arterial streets: 600 feet.
(b) 
Collector streets: 300 feet.
(c) 
Local streets: 150 feet.
(3) 
The minimum tangent between reverse curves shall be:
(a) 
Arterial streets: 250 feet.
(b) 
Collector streets: 250 feet.
(c) 
Local streets 100 feet.
L. 
Horizontal curves.
(1) 
Design for horizontal curves, including stopping sight distance and superelevation, shall conform to the Pennsylvania Department of Transportation design standards for local roads and streets.
M. 
Street grades.
(1) 
Center line grade shall be not less than 2%.
(2) 
Center line grades shall, wherever feasible, not exceed the following:
(a) 
Local street: 12%.
(b) 
Collector street: 10%.
(c) 
Arterial street: 8%.
(3) 
Vertical and horizontal alignment should comply with standards of the American Association of State Highway and Transportation officials. See street construction standards.
(4) 
Cross slopes (crown) shall not be less than 2% or greater than 4%. Vertical curves shall be used in changes of grade exceeding 1% and shall provide proper sight distances as specified herein above.
N. 
Street width.
(1) 
Minimum street dimensions shall be as follows:
(a) 
Right-of way/all streets: 50 feet (minimum).
[1] 
Cartway/street widths, not including a parking lane.
[2] 
Arterial street: twenty-four-foot width.
[3] 
Collector street: twenty-four-foot width.
(b) 
Local street: twenty-two-foot width.
(2) 
Additional right-of-way and cartway width may be required by the Council for the following purposes:
(a) 
To promote public safety and convenience where anticipated traffic flows warrant, or where drainage easements should reasonably parallel thoroughfares.
(b) 
To provide parking space in commercial districts and in areas of high density residential development.
(3) 
Short extensions of existing streets with lesser cartway widths than prescribed above may be permitted; provided, however, that no section of new right-of-way less than 50 feet in width shall be permitted.
O. 
Street intersections.
(1) 
Multiple intersections involving junction of more than four streets shall be prohibited. Where this proves impossible, such intersections shall be designed with extreme care for both pedestrian and vehicular safety.
(2) 
Streets shall be laid out to intersect as nearly as possible at right angles. Local streets shall not intersect collector or arterial streets at an angle of less than 75°. The intersection of two local streets shall not be at an angle of less than 60°.
(3) 
Streets entering opposite sides of another street shall be laid out either directly opposite one another or with a minimum offset of 150 feet between their center lines.
(4) 
Minimum curb radii at street intersections shall be 25 feet for intersections involving only local streets, 35 feet for intersections including other type streets, or such greater radius as is suitable to the specific intersection.
(5) 
The sight distance at intersections should be based on the traffic control signing and intersection visibility based on Chapter 5, "Local Roads and Streets," in A Policy on Geometric Design of Highway and Streets. The clear sight triangle must be shown on the plans.
(6) 
Intersections of local streets with collector and arterial streets shall be kept to a minimum, consistent with topography and other local conditions. All subdivision intersections of less than 150 feet shall be avoided. To the fullest extent possible, intersections with collector and arterial streets shall be located not less than 800 feet apart, measured from center line to center line.
P. 
Alleys shall not be permitted in any subdivision.
Q. 
Private streets, either new or existing (vehicular rights-of-way not dedicated for public use) shall not be approved, nor shall layout or improvements for lots abutting private streets be approved. No extension of an existing private street shall be approved until the original portion of the street complies with all requirements of this chapter and is dedicated for public use. [See § 151-403B and § 151-403C(3) of this chapter for exceptions to this provision.]
R. 
Streets proposed for commercial or industrial land development purposes shall, if possible, be laid out to intersect directly with arterial and collector streets. Insofar as possible, traffic circulation systems for commercial and industrial subdivisions shall be designed in a manner to eliminate or discourage traffic flow through residential areas.
S. 
Street names and numbering.
(1) 
Proposed streets which are in alignment with other already existing and named streets shall bear the names of the existing streets. In no case shall the name of a proposed street duplicate or be similar in sound and spelling to an existing street name in the Borough's postal service area, irrespective to the use of the suffix "street," "avenue," "boulevard," "drive," "place," "court," "lane," etc. All street names shall be subject to the approval of the Council.
(2) 
All house numbering systems shall be coordinated with the numbering of existing development in the area and approved by the Planning Commission and Council.
(3) 
Emergency communication system.
(a) 
Posting of address identification number required.
(b) 
The property owner of each residence, apartment building or business shall post and display the legally assigned identification number assigned by the Borough, after coordination with the County Public Safety Department, within 60 days after said numbers are received by the Borough in cooperation with the U.S. Post Office.
(c) 
Regulations regarding size, posting and display of address identification numbers.
[1] 
Size. The minimum size of any identification number which is attached to a building, residence or mobile home is four inches in height. The minimum size of an identification number which is attached to a United States Postal mailbox is one inch in height.
[2] 
Color. The color of the identification numbers must be such that it is clearly visible as it relates to the background color upon which it is attached.
[3] 
Posting.
[a] 
Every building, residence or mobile home must have the identification number posted on its United States Postal mailbox if such a mailbox is utilized and located directly in front of the residence, building or mobile home.
[b] 
Any residence, building or mobile home that does not utilize a United States Postal mailbox that is located directly in front of the residence must place an identification number directly on the residence, building or mobile home in a conspicuous place.
[c] 
All residents and owners are encouraged to use both locations described above to clearly mark their residence, building or mobile home.
[d] 
AU identification numbers must be clearly visible from the street or road which provides public access to the premises and cannot be obstructed by vegetation, trees or any other object.
[e] 
If any residence, building or mobile home would not be visible from the street or road and does not utilize a United States Postal mailbox, identification numbers must be posted on a post or masonry pillar visible from the street or road.
A. 
Commercial and industrial ingress and egress (driveways) shall be designed to provide optimum visibility and to minimize traffic congestion in the vicinity of the development parcel. Traffic access design shall conform to the following requirements:
(1) 
All applications for preliminary and final plan approvals of subdivisions for commercial and industrial land development shall contain a traffic circulation plan showing:
(a) 
Locations and dimensions of vehicular ingress and egress for each development parcel.
(b) 
Location and access provisions for parking and loading for each development parcel.
(c) 
Available sight distances at all driveways.
(2) 
Defined ingress and egress points shall be required for all commercial and industrial development parcels and there shall be no more than two access points, which must be a minimum of 500 feet apart if on the same street.
B. 
All driveways shall be constructed so as not to interfere with roadway drainage. Cross drains shall be constructed beneath the driveway where required to provide adequate drainage. Driveways shall be constructed consistent with requirements delineated by Borough standards.
Reserve strips surrounding property, or areas reserved for any purpose that shall make any area unprofitable for regular or special assessments, or that may revert to an untended nuisance area, shall not be approved by the Council.
Subdividing land shall be done in a manner that will not bar adjacent property owners from access to streets and ways of alignment or otherwise preclude the development of surrounding land areas.
Provisions for improvement and maintenance of any open space and recreation areas set aside as common space shall be guaranteed by appropriate bonds or similar provisions satisfactory to the Council.
Trees, shrubbery and similar vegetation shall not be established within a road right-of-way, except as specifically authorized by the Borough Council. Trees, shrubbery and similar vegetation shall not be established in proximity to a road right-of-way in a manner that interferes with clear site access from the road cartway.