[Ord. No. 375, 6/4/2024]
The purpose of this Part is to provide reasonable design standards for public improvements related to subdivision and land development.
Right-of-Way, Shoulder and Cartway Widths | |||
|---|---|---|---|
Street Type | Right-of-Way Widths | Cartway Width | Shoulder Width |
Arterial | The arterial streets are existing. Right-of-way widths are available from the Pennsylvania Department of Transportation | ||
Minor Streets including to a Cul-de-Sac | Cartway width plus 12 feet | 30 feet with 25 mph speed limits, 28 feet with 20 mph speed limits (with conditional approval for lesser widths of as little as 22 feet)1 | N/A unless specified as a condition for reduced cartway widths |
Circular turnaround of Cul-de-Sac without center islands and with parking | Cartway diameter plus 12 feet | 80 feet diameter | N/A |
Alley or Service Drive (to be dedicated to Borough) | 20 feet | 16 feet | N/A |
Note: | |
|---|---|
1 | Requests for minor street cartway widths less than 28 feet, to match existing street widths or for environmental purposes, may be considered with some combination of the following provisions: increased off-street parking, reduced street parking, reduced speed limits (15 mph) AND with dwelling density no greater than 5 dwellings per net acre for a 22-foot cartway as a minimum width. They may also accommodate sidewalks, snow storage, sight triangles, slope maintenance areas, and utilities such as water, sewer, storm drainage, and electrical service, cable TV, and gas lines where appropriate. |
Type of Street | Minimum Radius |
|---|---|
Minor Arterial | 300 feet |
Minor | 150 feet |
Minimum and Maximum Grades | ||
|---|---|---|
Type of Street | Minimum Grade | Maximum Grade |
Arterial | As determined by the (Name of the governing body) and Planning Commission after consultation with the Township/Borough Traffic Engineer and Pennsylvania Department of Transportation | |
Minor | 1% | 7% |
Alley | 1% | 10% |
Minimum Simple Curve Radii | |
|---|---|
Intersection | Of Curb or Edge of Paving (feet) |
Arterial with minor | 35 |
Minor with minor | 20 |
Radius corner or diagonal cutoffs must be provided on the property lines substantially concentric with, or parallel to the chord of the curb radius corners | |
Minimum Clear Sight Triangles | |
|---|---|
Street Type | Clear Sight Triangle (feet) |
Arterial | 150 |
Minor with minor | 100 |
Driveway | 10 |
Table 5.1 Length of Vertical Curves for Extreme Changes in Driveway Grade | ||
|---|---|---|
Algebraic Change in Grade (%) | Length of Vertical Curve | |
Sag | Crest | |
10 | 25 | 10 |
15 | 35 | 20 |
20 | 45 | 30 |
25 | 55 | 40 |
American elm | Green ash* | Sugar maple |
American linden | Laurel oak | Swamp white oak |
American planetree | London planetree | Sweetgum |
American red maple | Northern red oak | Thornless |
Black gum* | Post oak | Honey locust* |
Black oak | Red oak* | White ash* |
Burr oak | Rotundiloba | Willow oak |
Chestnut oak | Southern red oak | Others recommended by the Shade Tree Commission |
* | Considered to be salt-resistant. |
Zoning District | Maximum Permitted Illumination (foot candles) | Maximum Permitted Height at Illumination (feet) |
|---|---|---|
Residential | 1.5 to 2 | 25 |
Residential Multi-Family | 2.0 | 35 |
Commercial | 3.0 | 40 |
Manufacturing/Industrial | 5.0 | 60 |
Maximum Permitted Illumination (foot-candles) | Maximum Permitted Height of Luminaire (feet) |
|---|---|
Residential Equals 0.2 | 10 feet |
Residential Equals 0.3 | 20 feet |
Average Slope of Lot | Minimum Percent of Undisturbed Area1 | Maximum Impervious Surface |
|---|---|---|
25 — 30% | 85% | 10% |
Over 30% | 90% | 10% |
Note: | |
1. | Undisturbed area shall be defined as land in its natural state before development. |