Township of Daugherty, PA Article V Design Standards

§ 148-13 Application of standards.

The following minimum design guidelines and subdivision principles, standards, and requirements will be applied by the Planning Commission and the Board of Supervisors in evaluating the plats or land developments for proposed subdivision.

§ 148-14 Land requirements.

All subdivisions and land developments shall be in compliance with the Daugherty Township Zoning Ordinance, as amended.

Editor's Note: See Ch. 175, Zoning.

§ 148-15 Street requirements.

A. Proposed streets shall be properly related to Township, county and state road and highway plans which have been prepared and officially adopted and/or filed as prescribed by law.

B. Streets shall be logically related to the topography so as to produce usable lots and reasonable grades.

C. Local streets shall be so laid out as to discourage through traffic, but provisions for street connections into and from adjacent areas will be generally required.

D. Where a subdivision plat abuts or contains an existing or proposed arterial street, the Planning Commission may recommend and the Board of Supervisors may require local access streets, reverse frontage lots, or such other treatment which 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 shall be prohibited.

F. Wherever a tract to be subdivided borders an existing half or partial street, the other part of the street shall be plotted and dedicated within such tract.

G. Cul-de-sac end streets may be permitted.

(1) A turnaround with a paved cartway diameter of 80 feet back of curb to back of curb with a right-of-way diameter of 100 feet shall be required at the end of all streets.

(2) The turnaround right-of-way shall be placed adjacent to a property line, and a right-of-way of the same width as the street minus the turnaround arcs shall be carried to the property line in such a way as to permit future extension of the street into an adjoining tract.

H. If lots resulting from original subdivision are large enough to permit resubdivision, or if a portion of the tract is not subdivided, adequate street rights-of-way to permit further subdivision shall be provided as necessary.

I. Reserve strips, restricting or controlling access to adjacent street or properties shall be prohibited.

J. Maximum allowable grades — center line of street.

(1) Arterial streets (to which collector streets channel traffic): 6%.

(2) Collector streets (which collect traffic from local streets): 8%.

(3) Local streets (which provide access to residential lots): 12%.

K. Minimum grades on all streets shall not be less than 1%.

L. Vertical curves of proper and adequate length shall be installed on all street grade changes exceeding 2%.

M. Alignment.

(1) Whenever street lines are deflected in excess of 2°, connection shall be made by horizontal curves.

(2) To ensure adequate sight distance, minimum center-line radii for horizontal curves shall be as follows:

(a) Arterial streets: 500 feet.

(b) Collector streets: 200 feet.

(c) Local streets: 100 feet.

N. Widths. Minimum street right-of-way widths and cartway (roadway) widths shall be as follows:

	Type of Street	Cartway (excluding curbs)(feet)	Right-of-Way (feet)
	Local	22	50
	Collector	24	50
	Collector (+ 50 lots)	30	50
	Arterial	40	60

(1) Additional right-of-way and cartway widths may be required by the Board of Supervisors for the following purposes:

(a) To promote public safety and convenience.

(b) To provide parking space in commercial districts and in areas of high-density residential development.

(c) Where a subdivision abuts or contains an existing street of inadequate right-of-way width, additional right-of-way width in conformity with the above standards may be required.

O. Street intersections.

(1) Curbs shall be installed by the subdivider. The curbs shall be of the type and material as specified and approved by the Board of Supervisors. All curbs at intersections shall be rounded by a minimum radius of 20 feet.

(2) Where the grade of any street at the approach to an intersection exceeds 5%, a leveling area shall be provided with a transitional grade not to exceed 2% for a distance of 25 feet from the nearest right-of-way line of the intersection.

(3) Multiple intersections of more than four roads shall be prohibited.

P. Street offsets. Street offsets of less than 125 feet shall be avoided.

Q. Compound curves. Compound curves shall be prohibited.

R. Alleys.

(1) Prohibited in residential areas.

(2) Permitted in commercial and industrial areas, subject to design approval of the Planning Commission and Board of Supervisors upon recommendation of the Township Engineer.

S. Driveways.

(1) Driveways shall be located to provide the best visibility possible within the limits of the property that each driveway services and shall be designed and constructed in accordance with the requirements of the Township and of Chapter 162, Vehicles and Traffic.

§ 148-16 Lots.

A. Residential lots shall be subdivided to meet minimum area requirements in accordance with the terms of the Daugherty Township Zoning Ordinance, as amended.

Editor's Note: See Ch. 175, Zoning.

B. The frontage width of lots fronting a cul-de-sac shall be determined as the width at the building line, but in no case shall the actual recorded frontage be less than 50 feet. The side yard setback requirements will be calculated from the midpoint of the structure along the average length of both sides of the structure.

C. All lot lines shall be set perpendicular or radial to the center line of the street whenever possible. All nonradial lines shall be denoted as such on the plat.

D. Irregularly shaped lots shall be avoided whenever possible.

§ 148-17 Building lines.

The building lines shall be in accordance with the terms of the Daugherty Township Zoning Ordinance, as amended.

Editor's Note: See Ch. 175, Zoning.

§ 148-18 Blocks.

A. Block lengths should not exceed 1,200 linear feet nor be less than 500 linear feet in length.

B. Blocks shall be at least two lots in depth except for reverse frontage lots.

C. Where crosswalks are provided, they shall have a minimum right-of-way of 12 feet with a five-foot paved walk.

D. The depth-to-width ratio of conforming lot configurations should be at a maximum of 2 1/2 depth to one unit of width.

§ 148-19 Easements.

A. Utility easements shall have a minimum width of 10 feet and be placed at the side or rear of lots whenever possible.

B. Where a subdivision is traversed by a watercourse, there shall be a drainage easement or right-of-way conforming substantially with the line of such watercourse, and of such size as to provide sufficient width for maintenance, but in no case less than 20 feet.

§ 148-20 Sidewalks.

Sidewalks and crosswalks, where required by the Board of Supervisors, shall be installed by the subdivider or developer along public streets or where deemed necessary for public safety, as determined by the Board of Supervisors.

§ 148-21 Street names.

The subdivider may choose his street names, subject to the approval of the Planning Commission and the Board of Supervisors. No street, other than an extension, may be given the name of an existing street in the Township or postal service areas of which Daugherty Township is a part.

§ 148-22 Access.

In subdividing land it shall be done in a manner that will not have the effect of debarring adjacent property owners from access to the streets and ways of the allotment.