Borough of Rosslyn Farms, PA
Allegheny County
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Table of Contents
Table of Contents
A. 
Streets shall be graded to street profile grades and cross sections as established on and presented with the preliminary plats and as approved by Borough Council.
B. 
Street cross sections shall be in accordance with standards and specifications established by the Borough.
C. 
Streets shall be graded to the full width of the street right-of-way and slopes of a minimum of two feet to one-foot shall be constructed commencing at the street right-of-way and extending on to the lots of properties adjoining the street right-of-way, this applies to both cut and fill sections.
D. 
Subgrade of streets shall be brought to the proper grade and contour, and shall be rolled, and cross rolled using compaction equipment meeting the requirements of Publication 408, or an acceptable alternative. Compaction of the subgrade shall also meet the density requirements of Publication 408, or an acceptable alternative. Where subgrades displaying pronounced elasticity or deformation under rolling equipment is found and stability cannot be obtained, the unsuitable material shall be removed and replaced until the subgrade is suitably stabilized.
E. 
No base course shall be placed until the street subgrade has been inspected and approved by the Borough Engineer. Said inspections shall be paid for as specified in § 187-56 of this chapter.
A. 
In areas where springs, poor soil drainage conditions, wet weather springs or where conditions exist that underground drainage is necessary to properly protect the proposed street pavement there shall be constructed pipe underdrain, stone underdrain or subgrade drains according to current Pennsylvania Department of Transportation Specifications, subject to approval of drawings by the Borough Engineer.
B. 
If during construction unknown poor drainage conditions are encountered by the landowner, he shall notify the Borough Engineer and correct such conditions encountered at the direction of the Borough Engineer to his complete satisfaction.
C. 
Permanent pipe underdrain of a size, depth, width and slope as determined by the Borough Engineer shall be installed on the upper or high side, and all cut areas where they are required or necessary to prevent the infiltration of water under the paved roadway.
A. 
Type of curb used and location shall conform to the construction standards.
B. 
Concrete curbs shall be of the following types in accordance with standards and specifications established by the Borough:
Straight curb
(eight inches by 24 inches)
Battered curb
(six inches by eight inches by 24 inches)
Rolled curb and gutter
Combined curb and sidewalk
C. 
Bituminous curbing shall be wedged construction and installed on both sides of street in accordance with standards and specifications established by the Borough.
A. 
The base course shall be constructed to lines, grades and cross-sections as approved with all materials used and all construction requirements performed in conformity with the latest edition of the Pennsylvania Department of Transportation Publication 408 and consist of a subbase course and a bituminous concrete base course as follows:
(1) 
A crushed aggregate subbase course with a compacted thickness of not less than 10 inches in depth, all in accordance with Section 350 "Subbase" of Publication 408.
(2) 
A bituminous concrete base course with a compacted thickness of not less than five inches in depth, all in accordance with Section 305 "Bituminous Concrete Base Course" of Publication 408, shall be constructed on the subbase course.
(3) 
A bituminous surface course using ID-2 bituminous material with a compacted depth of 1 1/2 inches, all in accordance with Pennsylvania Department of Transportation Publication 408, current edition, Section 420 "Bituminous Wearing Course ID-2," shall be installed on the bituminous concrete base course for use during construction phase of development.
B. 
The base course shall be installed and constructed in accordance with standards and specifications established by the Borough.
A. 
The pavement wearing course shall not be installed until 90% of the dwellings are completed and construction equipment is not using the roadway or street. All damaged base course shall be replaced using same depth and materials specified herein in § 187-31. Any uneven base course shall be leveled with a bituminous leveling course. All repairs shall be completed and approved by the Borough Engineer prior to the placement of the final wearing course.
B. 
The pavement wearing course shall be constructed to lines, grades and cross-sections as approved with all materials used and all construction requirements performed in conformity with the latest editions of the Pennsylvania Department of Transportation Publication 408 as follows:
(1) 
A bituminous wearing course (ID-2) with a compacted thickness of not less than 1 1/2 inches in depth, all in accordance with the latest edition of the Pennsylvania Department of Transportation, Section 420 of Form 408, shall be constructed on the bituminous concrete base course.
(2) 
The pavement wearing course shall be installed and constructed in accordance with standards and specifications established by the Borough.
A. 
Sidewalks shall be provided where streets of a proposed subdivision are extensions of existing streets having sidewalks on one or both sides.
B. 
Sidewalks shall be of Portland concrete five inches in thickness except at driveways where they shall be a minimum of six inches in thickness. Sidewalks shall be a minimum of four feet in width exclusive of the width of the curb in the manner approved in the preliminary plat.
C. 
Sidewalks, where provided, shall be within the right-of-way and in residential areas, where conditions permit, 2 1/2 feet from the curb and a landscaped strip shall be provided between the sidewalk and the curb, if feasible. Sidewalks should line up with sidewalks in adjoining subdivisions.
A. 
Street name signs shall be installed at each street intersection in accordance to type of materials, design and standards established by Borough Council prior to the occupancy of any dwellings.
B. 
A traffic control signage plan and supporting documentation shall be submitted for approval and shall be installed prior to occupancy of any dwellings.
C. 
All traffic control, no parking and speed limit signs shall meet PennDOT standards and locations for such signs and the Manual of Uniform Traffic Control Devices.
A. 
Installation of sanitary sewers, including house lines, laterals, trunk lines, manholes, and other appurtenances, shall comply with the rules and regulations of the Pennsylvania Department of Environmental Protection (PA DEP) and ALCOSAN.
B. 
In areas where a public sanitary sewer is available, all properties within the subdivision shall be connected thereto.
C. 
All individual properties now using sanitary sewage facilities and all future properties requiring sanitary sewage facilities shall be connected to the municipal sewage system if it is available.
A. 
Installation of sanitary sewage treatment plants and other appurtenances shall be subject to approval by the Pennsylvania Department of Environmental Protection and Borough Council.
B. 
No building permit will be issued for any construction or development until documentation is submitted guaranteeing capacity for treatment of effluent.
A. 
Adequate stormwater drainage facilities shall be installed in conformance with a stormwater management plan to ensure that stormwater does not flow onto abutting property, sidewalks or streets in such quantities as to cause a detrimental effect. The stormwater management plan shall ensure to the satisfaction of the Borough Engineer that rates of runoff after development shall not be greater than the runoff which would occur on the site in its natural state.
B. 
The stormwater management plan shall comply with the Pennsylvania Stormwater Management Act, P.L. 864, No. 167,[1] and be prepared in accordance with standards and specifications established by the Borough.
[1]
Editor's Note: See 32 P.S. § 680.1 et seq.
C. 
All materials and methods of construction and installation shall meet and comply with the requirements of Commonwealth of Pennsylvania Department of Transportation's Publication 408, current edition and their Standards for Roadway Construction Series RC-0 to 100, current edition.
D. 
Approved precast concrete inlets and cast iron castings shall be placed at all low points, street intersections and at points along both sides of the street to ensure adequate drainage, but in no case shall the distance between inlets along the street exceed 400 feet unless approved by the Borough Engineer. Inlets at street intersections shall be placed on the tangent and not on the curved portion.
E. 
Manholes and cast iron castings of the type shown on the standards and specifications established by the Borough shall be installed at all changes in alignment and grades of stormwater sewers as may be directed by the Borough Engineer to provide for proper maintenance. Inlets may be substituted for manholes where practical.
F. 
Stormwater sewers shall be located in the street right-of-way or in a drainage easement.
G. 
Stormwater sewers shall be reinforced concrete or a high density polyethylene corrugated pipe with an integrally formed smooth interior and have a minimum diameter of 15 inches and a minimum grade of 1%.
H. 
In the design of stormwater sewer installations, special consideration shall be given to avoidance of problems which may arise from concentration of stormwater runoff over adjacent properties, including release or discharge of stormwater onto and across adjacent land when required.
I. 
Bridges and culverts shall be designed to support the expected loads, to carry expected flows, and be constructed the full width of the right-of-way, where deemed necessary by the Borough Engineer.
J. 
Stormwater management plans shall be in compliance with the Borough Engineer's guidelines adopted by resolution and be submitted for approval with preliminary plat application. Such plan shall include pipe sizes and materials, details of proposed catch basins and inlets, location of manholes and finish elevations.
A. 
If public water supply is available or definitely planned for the area by the Borough, then provisions shall be made for its immediate and eventual use.
B. 
Community wells or project wells for water supply shall be approved by the Pennsylvania Department of Environmental Protection and the Borough Council.
C. 
All water supply systems shall be constructed as per the specifications of the PA American Water Company or its successor and approved by the same, and copies of such agreements for supply of water service shall be submitted to Borough Council for approval.
D. 
Fire hydrants shall be installed as per the Borough's specifications for locations and must meet minimum static pressure levels as specified for fire protection.
Permanent monuments of reinforced concrete or metal shall be installed after all grading and improvements have been installed to identify all street rights-of-way and set in locations as determined by the Borough Engineer. The developer shall furnish a certification that monuments have been set in the locations as shown on recorded subdivision plan.
Street trees shall be provided along all new streets and extensions of existing streets. Their proposed locations, spacing and species shall conform to the Borough Construction Standards and the recommended list of trees in Appendix A. A planting plan shall be submitted for approval by the Planning Commission and Borough Council. On narrow rights-of-way or where the planting strip between sidewalk and the curb is less than five feet wide, trees will not be permitted, but are to be placed inside the property lines.
In wooded areas or where other natural conditions exist, in such a manner that their presence adds to the desirability of a subdivision, Borough Council shall require that the developer preserve as much of the original trees and natural conditions as is economically feasible and require that a minimum of grading be done other than the grading and excavating which is required for the construction of the improvements in accordance with the improvement standards included herein and approved by Borough Council.
A. 
At the time of submission of a subdivision plan or development plan for preliminary approval a grading plan prepared in compliance with the Borough Grading Ordinance[1] shall be presented for review. The grading plan shall identify the existing and proposed grade contours at two-foot intervals with sufficient elevations to show proposed grading of streets, lots, drainage ways, stormwater detention ponds and any other proposed grading activity.
[1]
Editor's Note: See Ch. 120, Grading and Excavating.
B. 
Topsoil preservation. No topsoil shall be removed from the site or used as spoil. Topsoil must be removed from the areas of construction and stored in accordance with the approved erosion and sedimentation control plan as required under § 187-12B(3)(n) of this chapter. Upon completion of the construction, the topsoil must be redistributed on the site uniformly. All areas of the site shall be stabilized by seeding, both temporary and permanent, or planted in accordance with the approved erosion and sedimentation control plan as required under § 187-12B(3)(n) of this chapter.
After completion of all required improvements the developer shall have his engineer or surveyor prepare and submit to the Borough, plans and profiles showing the exact location, elevation, grade, size stormwater detention pond volumes and material used to install all facilities. Said plans shall be dated, signed and sealed by the person preparing plan and be submitted on reproducible Mylar or in CAD format.