Any application for development shall conform to the standards set forth in this article. The standards specified in this article are minimum design requirements.
In reviewing any application for development, the Planning Commission and the Borough Council shall refer the application for development to the Borough Engineer for a recommendation concerning technical compliance with these design standards and the Borough construction standards.[1]
[1]
Editor's Note: See Ch. 83, Building Construction.
A. 
Grading, filling, removal of topsoil, erosion and sedimentation control. All grading, filling, removal of topsoil and erosion and sedimentation control shall be performed in accordance with the requirements of Chapter 117, Grading, Excavation and Filling.
B. 
Planting and cutting of trees; removal of debris.
(1) 
Large shade trees shall be adequately protected from injury and preserved to the extent practical.
(2) 
All lot areas which slope toward streets or adjacent lots shall be required to be seeded with grass or planted with ground cover so as to prevent washing and erosion.
(3) 
During construction, the developer shall remove and dispose of all uprooted trees, stumps, brush, rubbish, unused building materials and debris promptly in the interest of public safety.
C. 
Flood-prone areas. Land identified as flood-prone by the developer in consultation with the Borough Engineer shall be developed in accordance with the current standards of the National Flood Insurance Program.
A. 
Layout. Streets shall be planned to conform with the layout of existing and planned streets and so located as to allow proper development of surrounding properties. Local streets shall be laid out so as to discourage through traffic. Collector streets should be designed to provide adequate flow of traffic from local streets to major community facilities and to arterial streets.
B. 
Topography. Proposed streets shall be planned to conform to the contour of the land to the fullest extent possible to provide buildable lots, to have a suitable alignment and grade and to allow proper drainage.
C. 
Street grades. Minimum and maximum grades shall be provided on all streets in accordance with the design standards specified in Appendix A.[1] Grades shall be measured along the center line of the street. Vertical curves shall be used in changes of grade exceeding 1% and should be designed in accordance with the design standards specified in Appendix A. Intersections shall be approached on all sides by leveling grades for a distance of 25 feet within which no grades shall exceed the design standards specified in Appendix A. The grade of actual intersections shall not exceed 6% in any direction.
[1]
Editor's Note: Appendix A is included as an attachment to this chapter.
D. 
Right-of-way and paving widths. Minimum widths of rights-of-way and minimum widths of paving shall be provided in accordance with the design standards specified in Appendix A. All streets shall be paved in accordance with Borough construction standards.[2]
[2]
Editor's Note: See Ch. 83, Building Construction.
E. 
Culs-de-sac. A cul-de-sac shall not be approved when a through street is practical and shall not be more than 900 feet in length, unless an intermediate turnaround is provided at a distance of every 900 feet and a modification or exception to the length of the cul-de-sac is granted in accordance with the requirements of Article VII of this chapter. A cul-de-sac shall have a minimum right-of-way radius and an outer minimum paving radius as specified in the design standards in Appendix A.
F. 
Temporary turnarounds. A temporary turnaround may be required where a road is constructed to an adjoining property line or where the terminus of a road adjoins property in a future phase of the plan. The temporary turnaround shall be paved. The right-of-way width required for a temporary turnaround shall be a minimum of 60 feet, and the outer paving radius of the temporary turnaround shall be 30 feet.
G. 
Visibility.
(1) 
No fence, hedges, shrubbery, walls, planting (other than trees and grass) or similar obstructions shall be located within the right-of-way, and no such obstruction shall obscure visibility at any intersection. The location of fences and walls shall be further subject to the requirements of Chapter 210, Zoning.
(2) 
A clear sight triangle, as defined by this chapter, shall be maintained free of any obstructions at intersections so that there shall be a minimum clear sight triangle measured along the center line from the points of intersection in accordance with the requirements specified in Appendix A. The clear sight triangle shall be shown on the final plat for recording.
H. 
Street names. All new street names shall be approved by the Borough. Names of new streets shall be sufficiently different in sound and spelling from existing names of streets in the Borough so as not to cause confusion. A street which is planned as a continuation of an existing street shall bear the same name. Street signs shall be provided in accordance with § 183-36 of this chapter.
I. 
Sidewalks. The width of sidewalks shall conform to the standards specified in Appendix A. Sidewalks shall be located in line with existing sidewalks on adjacent lots or, where none exist, shall be located a minimum of two feet from the edge of any curb or paving where practical. The grade and paving of the sidewalk shall be continuous across driveways. Concrete sidewalks shall be five inches reinforced, except at driveway crossings where the thickness shall be increased to six inches, and shall be reinforced with six-by-six-inch mesh, No. 9 gauge. All sidewalks shall be constructed in accordance with Borough construction standards.
J. 
Crosswalks. Crosswalks may be required wherever necessary to facilitate pedestrian circulation and to give access to community facilities such as parks, playgrounds, schools or public buildings.
Service streets, as defined by this chapter, may be permitted in residential, commercial and industrial developments where needed for loading, unloading or secondary access. Service streets shall be constructed in accordance with Borough construction standards[1] and shall meet the minimum design standards shown in Appendix A[2] for local streets, except that the minimum right-of-way width may be reduced to 30 feet and the minimum cartway width may be reduced to 16 feet.
[1]
Editor's Note: See Ch. 83, Building Construction.
[2]
Editor's Note: Appendix A is included as an attachment to this chapter.
Easements for sanitary sewers, waterlines and stormwater management facilities shall be required to have a minimum width of 20 feet. Where a subdivision or land development is or will be traversed by a watercourse, there shall be provided a stormwater easement or drainage right-of-way of a width sufficient for the purpose, but not less than 20 feet.
The following standards shall apply to all lots proposed to be subdivided or developed in accordance with this chapter:
A. 
Area. Minimum lot areas shall conform to the requirements of Chapter 210, Zoning.
B. 
Frontage. All lots created by a subdivision shall have frontage along the right-of-way of a public street, and the width of the frontage shall conform to the requirements of Chapter 210, Zoning.
C. 
Double frontage. Double frontage lots shall be avoided; however, where a double frontage lot is the only practical alternative, vehicular access shall be limited to only one street, and that street shall be the street with the lower volume of traffic, if physically feasible. The final plan shall contain a notation restricting vehicular access to one frontage.
D. 
Sidelines. Whenever practical, the sidelines of a lot shall be at right angles or radial to the right-of-way lines of streets.
E. 
Building lines. Building lines of lots shall conform to the minimum requirements of Chapter 210, Zoning, and shall be shown on the final plat.
F. 
Grading. Lots shall be graded to provide drainage away from buildings, and water shall be drained to the street rather than to adjoining property. The developer shall be required to provide drains or other drainage facilities, as approved by the Borough Engineer, to drain off surface water within the development.
G. 
Driveways. No driveway shall have a slope of more than 15%. Driveways may extend from the right-of-way line of the street to the cartway of the street, but shall not change the grade or contour of the street right-of-way, nor shall any person cut into, fill or in any way alter any gutter, curbing, drainage ditch or storm sewer within the right-of-way of a street or easement for the purpose of extending a driveway or for any other purpose without first obtaining a permit therefor from the Borough. All curb cuts shall conform to Borough specifications. Paved driveways shall have a joint at the public street right-of-way. Driveways shall not be constructed in such a way that creates a drainage problem on adjoining property.
H. 
Accessibility. Every lot, building and structure shall be accessible to emergency and public safety vehicles.
I. 
House numbers. House numbers shall be assigned by the United States Postal Service in coordination with the Borough and shall be posted at each house in accordance with the requirements of the Uniform Construction Code.[1]
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I).
Stormwater management facilities shall be provided for subdivisions and land developments as required by existing ordinances of the Borough of Dormont as now or hereinafter adopted or amended.[1]
[1]
Editor's Note: See Ch. 179, Stormwater Management.
A. 
Size and grade. Storm drains shall be adequate for the anticipated runoff when the area is fully developed. The minimum diameter of storm sewers shall be 15 inches, and the minimum grade shall be 1%, unless approved by the Borough Engineer.
B. 
Manholes. For pipe sizes of 24 inches or less, manholes shall be spaced at a maximum of 400 feet, and for larger pipe sizes, the maximum distances between manholes shall be 600 feet. In addition, manholes shall be installed at all points of abrupt change in horizontal alignment and vertical grade. Inlets may be substituted for manholes where practical.
C. 
Inlets. Inlets of the type shown in the Borough construction standards[1] shall be installed. Inlets at street intersections shall be placed on the tangent and not on the curved portions.
[1]
Editor's Note: See Ch. 83, Building Construction.
D. 
Castings. Manholes and inlet castings shall be as indicated in the Borough construction standards.
E. 
Stormwater roof drains. Stormwater roof drains shall be connected directly to underground pipes which shall flow into an approved storm drainage system. This storm drainage system may include dry wells or sumps. All pipe from roof drains shall be a minimum four-inch Schedule 40 ABS, PVC or SDR 35 pipe. Four-inch Schedule 40 PVC or ABS pipe is required for a distance of five feet from the foundation of the dwelling.
F. 
Unnatural drainage. Whenever construction stops or concentrates the natural flow of storm drainage in such a way as to affect adjoining properties, approval of the owners shall be obtained, in writing. Approval of plans by the Borough does not authorize or sanction drainage affecting adjoining properties.
G. 
Watercourses. Open watercourses shall not be permitted within the rights-of-way of streets. The stopping, filling up, confining or other interference with or changing the course of drains, ditches, streams and watercourses in the Borough shall not be permitted unless approval, in writing, is obtained from the Borough Council. A permit must be obtained from the Department of Environmental Protection (DEP) of the Commonwealth of Pennsylvania for construction or changes in a watercourse subject to the regulations of the Pennsylvania Department of Environmental Protection.
H. 
Bridges and culverts. All bridges and culverts shall be designed to support expected loads and to carry expected flows and shall be designed to meet current standards of the Pennsylvania Department of Transportation. All bridges and culverts shall be subject to all permits required by the Pennsylvania Department of Environmental Protection, Bureau of Waterways Engineering and Wetlands.[2]
[2]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I).
A. 
Installation. Installation of sanitary sewers and appurtenances shall be in accordance with the Borough sanitary sewer standards,[1] subject to the approval of the Borough Engineer. All utility stubs shall be extended to the street right-of-way line. All sanitary sewers shall have the approval of the Pennsylvania Department of Environmental Protection (DEP) prior to initiating construction.
[1]
Editor's Note: See Ch. 170, Sewers.
B. 
Minimum size and grade. The minimum diameter of sanitary sewers shall be eight inches, and the minimum grade shall be 1.0%.
C. 
Laterals. Lateral connections, where required, shall be installed to the right-of-way line of the street prior to road paving. Each building shall have a separate connection to the Borough sewer, except that garages accessory to dwellings may be connected to the dwelling line.
All subdivision and land development plans shall be designed to meet the current standards of the commonwealth and federal law with respect to handicapped accessibility.
A. 
All sanitary sewer lines shall be lamped and air-tested by the developer in the presence of the Borough Engineer or inspector. Air tests shall be conducted in accordance with the specifications established by currently accepted engineering standards.
B. 
All construction materials used in sewers, streets, sidewalks and other required improvements shall be tested by a qualified testing laboratory if required by the Borough Engineer. The cost for such tests shall be borne by the developer.