Township of North Fayette, PA CONSTRUCTION STANDARDS FOR PUBLIC AND PRIVATE IMPROVEMENTS

Street Classifications.

The following street classification system is hereby adopted for all proposed streets in the Township:

Arterial street, refer to Detail RD-1 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Commercial collector street, refer to Detail RD-2 of the Township Minimum Construction Standards and Details.

Residential collector street, refer to Detail RD-3 of the Township Minimum Construction Standards and Details.

Commercial local street, refer to Detail RD-4 of the Township Minimum Construction Standards and Details.

Residential local street, refer to Detail RD-5 of the Township Minimum Construction Standards and Details.

The functional classification of all existing streets is as specified and adopted by the Township as part of Chapter 27, Zoning. Where a proposed development abuts an existing street, the street shall be improved and widened in accordance with its classification for the full length of the development.

The functional classification of any existing street that is not specified in the current Zoning Ordinance (Chapter 27) of the Township shall be considered to be a local street unless otherwise determined by the Township consistent with the definitions for the street classification system.

The functional classification of any proposed street shall be determined by the Township Traffic Engineer upon submission of an application for subdivision and/or land development approval and a traffic impact study. The applicant shall comply with the street design standards for the roadway classification as determined by the Township Traffic Engineer.

Street Paving Standards.

Typical section of grading, paving, curbing, underdrains, and berm grading for all streets shall be approved in accordance with construction standards on Detail RD-1 though RD-5 of the Township Minimum Construction Standards and Details.[2] Geometric design shall be in accordance with the requirements as specified in Detail RD-11 of the Township Minimum Construction Standards and Details, applicable PennDOT and AASHTO design publications, and as determined by the Township upon recommendation by the engineer.

[2]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Materials. Roadway subbase, base course and wearing surface of all streets shall be constructed in accordance with the standards of this code, and all materials used shall meet the latest Pennsylvania Department of Transportation (PennDOT) specifications including Publication 408 and Publication 72M, current editions. All materials used for street construction shall be obtained from suppliers listed in PennDOT Bulletins 14, 15, 41 and/or 42. Additional base course depths may be required as the Engineer may determine to be necessary for the type of street that has been proposed. Limestone aggregate shall be required for subbase. Slag will not be permitted.

Underdrain. Permanent underdrains as specified by the Township Minimum Construction Standards and Details shall be installed along the full length of each side of any proposed roadway, and where otherwise specified by the Township as necessary to prevent the infiltration of water under the paved roadway.

Shoulders. Street shoulders shall be graded for the full width of the right-of-way in accordance with the typical street section in this code and thoroughly compacted by rolling all shoulders. Slopes and berms shall be seeded to prevent erosion.

Utilities in Streets. All utilities crossing streets shall be installed in trenches backfilled and compacted with aggregate meeting Pennsylvania Department of Transportation specifications and approved by the engineer, and all other utilities within the right-of-way of streets shall be installed before the base, binder and bituminous wearing course is installed. Aggregate backfill shall be provided by a supplier listed in PennDOT Bulletin 14. Limestone aggregate shall be required for backfill. Slag will not be permitted.

Two-Phase Paving. When the bituminous paving is in a subdivision or other land development being developed at that time and it is anticipated that construction activity and heavy material hauling will be taking place for an extended period of time, a one-and-one-half-inch initial wearing course coat 9.5mm WMA wearing course material shall be applied. The final bituminous wearing course material shall be installed at such time as specified in the developer's agreement.

Pavement Markings. All stop bars, symbols, transverse markings, longitudinal lines and crosswalks shall be white hot thermoplastic in accordance with Pennsylvania Department of Transportation specifications.

Bituminous Tack Coat and Sweeping. All surfaces to be paved shall be swept clean with a power broom via vacuum truck and bituminous tack coated prior to paving as per PennDOT Form 408, latest edition. Tack coat is to be applied between all asphalt layers, including the milled surface.

Bituminous Joint Sealing Material. PG 64-22 hot, for sealing joints, eight-inch minimum width and provide material certifications as per Pennsylvania Department of Transportation specifications. Apply sand to all sealed joints to produce a nonskid and nontracing surface. Joint sealing to be completed at the following locations:

Cold joints between new and old pavement or successive days' installation;

Around all structures, manhole lids, catch basins, and valve boxes;

Centerline joint (four inches with E-3 or E-8);

Bituminous wedge curb gutter line (with E-3 or E-8); and

Joints separating bituminous cartway and concrete curb and gutter.

Drainage of Streets. Roadways must provide positive drainage to all inlets and to maintain flow of stormwater in the gutter line. Roadways will not be accepted for dedication as public infrastructure is low area, puddle or "birdbath" areas exist.

Street Design Criteria.

Geometric design shall be in accordance with § 22-504, Street Requirements, of the Township Code, Detail RD-11 of the Township Minimum Construction Standards and Details[3] and applicable PennDOT and AASHTO Design Publications.

[3]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Clear Sight Triangle. No obstructions shall be located within the right-of-way or lot that obscures visibility at the intersection of two streets or of a street and a residential driveway. A clear sight triangle, as defined by this code, shall be maintained free of any obstructions. The sides of the clear sight triangle shall be measured along the center line of the intersecting streets and shall meet the minimum standards shown in Detail RD-11 of the Township Minimum Construction Standards and Details. The clear sight triangle shall be shown on the final plat for recording if it is beyond the boundary of the right-of-way. Additional area may be required for the clear sight triangle based on analysis of required sight distance, as described herein.

Minimum Sight Distance. When a new street intersects an existing street, the minimum sight distance at the intersection shall be provided in accordance with the requirements of AASHTO Policy on Geometric Design of Highways and Streets, current edition, and applicable PennDOT Publications.

Roadway Design Grade Specification. The minimum and maximum allowable street grades shall be in accordance with Detail RD-11 of the Township Minimum Construction Standards and Details.[4] The maximum grade of a cul-de-sac shall be 5%.

[4]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Sight Distance. For vertical curves, shall be of adequate length in order to provide minimum sight distances in accordance with the requirements of AASHTO Policy on Geometric Design of Highways and Streets, current edition, and applicable PennDOT Publications.

Minimum centerline radii for horizontal curves shall be of adequate length to provide a minimum sight distance in accordance with the requirements of AASHTO Policy on Geometric Design of Highways and Streets, current edition, and applicable PennDOT Publications.

The speed limit on all proposed Township roadways shall be 25 miles per hour unless otherwise approved by the Township Traffic Engineer.

[Ord. No. 501, 8/9/2022]

Materials.

Forms. Formwork shall be in an approved shape and section, in depth equal to required edge thickness of paving, fabricated in sections not less than 10 feet long, designed to be positioned with not less than three pins or stakes and of adequate strength to withstand machine loads without springing or settlement. Metal or wooden forms shall be permitted.

Cement Concrete Walk, Ramps and Aprons.

The Portland cement concrete will conform to the requirements of the PennDOT 408 Section 676.

Conform air-entraining mixture to the requirements of PennDOT Form 408, Section 704.

Provide granular subbase material (PennDOT 2A) Crushed Stone or AASHTO No. 57 Crushed Stone Aggregate, Type C, as specified in the Commonwealth of Pennsylvania, Department of Transportation, Specifications (Publication Form 408, latest edition) Section 703.2, except granulated slag will not be permitted.

Place one-half-inch premolded, expansion joint material for the full depth of the sidewalk, opposite expansion joints in adjacent curb, between the sidewalk and curb, and between the sidewalk and rigid structures.

Conform welded wire fabric to AASHTO-M55 (ASTM-A185).

Concrete Curb and Gutter.

Conform to PennDOT 408, Section 630.

Conform cement concrete to PennDOT Form 408, Section 704, (PennDOT AA).

Conform reinforcing steel to ASTM A-615.

Aggregate will be AASHTO No. 57 Crushed Stone Aggregate, Type C which will conform to the Pennsylvania Department of Transportation, Publication 408, Section 703.2, current edition, except no slag will be permitted.

Expansion Joints: Place premolded, expansion joint material for the full depth of the sidewalk, opposite expansion joints in adjacent curb, between the sidewalk and curb, and between the sidewalk and rigid structures.

Fine Aggregate: ASTM C 33 fine aggregate, natural sand.

Portland Cement: ASTM C 150, Type 1.

Water: Potable, and free of chemicals affecting set of cement.

Abrasive Aggregate: Aluminum oxide or emery aggregate graded from particles passing a one-eighth-inch mesh screen and retained on a No. 50 screen.

Construction.

Concrete Walk and Ramps (Detail RD-12A):

Preparation of Subgrade. Compact subgrade as per PennDOT Form 408, Section 210.

Preparation. Compact subbase as per PennDOT Form 408, Section 350.

Construction Joints. Whenever placing concrete is suspended for 30 minutes or more, provide a construction joint located at the nearest control joint or expansion joint. All joints will be constructed in accordance with the PennDOT 408 Standard Specifications for Construction. Construct expansion, contraction (score lines and sawcuts) and construction joints true to line with face perpendicular to surface of concrete. Joints in sidewalk to align with joints in adjacent curb and sidewalk. Cut weakened-plane contraction joints every five feet or as shown on the Contract Drawings. Construct weakened-plane joint to depth equal to at least 1/4 concrete thickness. Provide expansion joints every 20 feet. Provide premolded joint filler for expansion joints in paving and abutting concrete curbs, catch basins, manholes, inlets, structures, walks, and other fixed objects, unless otherwise indicated.

Expansion Joints. Provide one-eighth-inch premolded joint filler for expansion joints abutting concrete curbs, catch basins, manholes, inlets, structures, walks and other fixed objects, unless otherwise directed or indicated.

Concrete Strength. At 28 days, 4,000 psi (PennDOT AA) compressive.

Placing. Thoroughly consolidate concrete during and after pouring so as to eliminate honeycombing and voids. Place in accordance with ACI 304 and ACI 318 requirements for mixing and placing concrete.

Concrete shall not be placed on frozen, loose, or otherwise unstable ground, or when debris, oil, or water are present. All concrete shall be thoroughly vibrated into place. All concrete surfaces shall be finished by experienced finishers to a smooth finish as soon after placing as conditions permit. No cement, plaster, or cement brush coats will be acceptable.

Start initial curing as soon as free water has disappeared from concrete surface after placing and finishing. Weather permitting, keep continuously moist for not less than 72 hours. Apply curing and protective covers as necessary to cover entire surface. Begin final curing procedure immediately following initial curing and before concrete has dried. Continue final curing for at least three days and in accordance with ACI 301 procedures. Avoid rapid drying at the end of final curing period.

Finished concrete surfaces will be sealed with a penetrating concrete sealer. Do not allow sealer to overflow or spill onto adjoining surfaces. Clean as necessary to remove and eliminate evidence of spillage.

All curb boxes, manholes, inlets, and other items must be flush with the sidewalk grade.

(11)

Curb ramps shall be design and constructed in accordance with the Accessibility Guidelines of the Americans with Disabilities Act and the current edition of PennDOT RC-67M. The location a of all curb ramps for accessible pedestrian paths shall be approved by the Township.

(12)

All sidewalks shall be separated from downgrade slopes that are steeper than 3:1 by guiderail, fencing or a five-foot-wide strip with a grade no steeper than 10%.

Concrete Curbs/Gutter (Detail RD-13 and RD-14):

Forming. Form straight sides against wood or metal.

Slip Form. Use design mixture for automatic machine placement. Produce curbs and gutters to required cross section, lines, grades, finish, and jointing.

Mixing and Placing Concrete. Conform to the requirements for mixing and placing 4,000 psi twenty-eight-day concrete. PennDOT Class A concrete.

Install integral concrete curbs and sidewalk when applicable.

Concrete Strength. At 28 days, 4,000 psi (PennDOT AA) compressive.

Placing. Thoroughly consolidate concrete during and after pouring so as to eliminate honeycombing and voids. Place in accordance with ACI 304 and ACI 318 requirements for mixing and placing concrete.

Concrete shall not be placed on frozen, loose, or otherwise unstable ground, or when debris, oil, or water are present. All concrete shall be thoroughly vibrated into place. All concrete surfaces shall be finished by experienced finishers to a smooth finish as soon after placing as conditions permit. No cement, plaster, or cement brush coats will be acceptable.

Start initial curing as soon as free water has disappeared from concrete surface after placing and finishing. Weather permitting, keep continuously moist for not less than 72 hours. Apply curing and protective covers as necessary to cover entire surface. Begin final curing procedure immediately following initial curing and before concrete has dried. Continue final curing for at least three days and in accordance with ACI 301 procedures. Avoid rapid drying at the end of final curing period.

Finished concrete surfaces will be sealed with a penetrating concrete sealer. Do not allow sealer to overflow or spill onto adjoining surfaces. Clean as necessary to remove and eliminate evidence of spillage.

Reinforcement. Dowel bars shall be ASTM A615 Grade 60. Reinforcing bars shall be deformed bars rolled from ASTM A615 Grade 60 steel.

Decorative Crosswalks (Private).

Developments located within the Streetscape Overlay District shall install decorative crosswalks in accordance with § 27-503.13E(2) of the Township Code. Stamped concrete shall contain brick red concrete dye or other color as approved by the Township.

[Ord. No. 501, 8/9/2022]

Storm Sewer Materials.

Reinforced Concrete Sewer Pipe.

Reinforced concrete sewer pipe shall conform with ASTM Designation C-76 and shall have a minimum wall thickness equal to or greater than "Wall B" as defined therein. Strength class shall be specified herein. Pipe shall be furnished in eight-foot minimum pipe lengths.

Concrete used in the manufacture of Class II, Class III, and Class IV pipe shall have a minimum compressive strength of 4,000 psi. Concrete used in the manufacture of Class V pipe shall have a minimum compressive strength of 6,000 psi. Class of pipe shall be in accordance with depth of pipe and manufacturer's recommendations.

All concrete pipe shall have two circular cages of reinforcement of the area and placement called for in ASTM Specification C-76 for "Wall B" or "Wall C" pipe. Pipe with elliptical reinforcement will not be accepted. All Class V concrete pipe shall be "Wall C" pipe thickness.

All pipe joints shall be the "O-Ring" type conforming to ASTM Specifications C-443, of latest revision.

All reinforced concrete sewer pipe shall have modified tongue and groove ends specially designed and prepared for joining by rubber gaskets. The pipe ends shall be formed by machined castings of heavy design to ensure accuracy and roundness.

Corrugated Polyethylene Pipe.

Corrugated polyethylene pipe (CPP), solid or perforated, shall be Blue Seal WT IB 10.8 pipe capable of smooth flow as manufactured by Hancor, or approved equal. Pipe diameters of four inches through 10 inches shall meet the requirements of AASHTO M252, Type S; pipe diameters of 12 inches through 60 inches shall meet the requirements of AASHTO M294, Type S or ASTM F2306. CPP storm sewer pipe shall be supplied in minimum of twenty-foot lengths except where connections to structures warrant a shorter length to be installed.

For perforated pipe, provide a minimum water inlet area of 1.4 in 2/lf, unless otherwise specified as follows:

Provide either circular or slotted perforations, except do not use slotted perforations in smooth wall pipe.

For circular perforations, provide holes with a nominal diameter not less than 3/16 inch or greater than 3/8 inch. Also provide similar rows of perforations on both sides of the pipe's vertical centerline with the lowermost rows separated by an arc of 60° minimum.

For slotted perforations, provide slots not exceeding 1/8 inch wide and a length not more than 10% of the average inside circumference for four-inch to eight-inch diameter pipe, and not exceeding 2 1/2 inches for pipes larger than eight inches. Additionally, center the slots in the corrugation valleys at a maximum 120° interval above the pipe circumference.

(d)

Flexible pipe six inches or less in diameter may be supplied in specified coil lengths or standard increments agreeable to the Township.

Virgin material for pipe and fitting production shall be high-density polyethylene conforming with the minimum requirements of cell classification 424420C for four-inch through ten-inch diameters, and 435400C for twelve-inch through sixty-inch diameters, as defined and described in the latest version of ASTM D3350, except that carbon black content should not exceed 4%. The twelve-inch through sixty-inch virgin pipe material shall comply with the notched constant ligament-stress (NCLS) test as specified in Sections 9.5 and 5.1 of AASHTO M294 and ASTM F2306 respectively.

Joints shall be joined with the Blue Seal WT IB (belt and spigot) joint. The joint shall be watertight according to the requirements of ASTM D3212. Gaskets shall be made of polyisoprene meeting the requirements of ASTM F477. Gaskets shall be installed by the pipe manufacturer and covered with a removable wrap to ensure the gasket is free from debris. Joints shall remain watertight when subjected to a 1.5-degree axial misalignment. A joint lubricant supplied by the manufacturer shall be used on the gasket and bell during assembly. Twelve-inch through sixty-inch diameters shall have a reinforced bell with a polymer composite band. Fittings shall conform to AASHTO M252, AASHTO M294 or ASTM F2306. Bell and spigot connections shall utilize a spun-on or welded bell and valley or saddle gasket meeting the watertight joint performance requirements of AASHTO M252, AASHTO M294 or ASTM F2306. Fabricated fittings shall be welded on the interior and exterior at all junctions. The CPP and joints shall have Cell Classification 435400C as specified by ASTM Designation D3350. To assure watertightness, field test in accordance with ASTM F2487. Perforated or combination pipe joints are required to be soil tight.

An approved structure coupling, waterstop or grouted interior and exterior shall be installed around the pipe when it enters and leaves each structure, concrete encasement, or anchor.

All pipe materials must conform to PennDOT Form 408, Sections 601 and 610.

High Performance Corrugated Polypropylene Pipe.

High performance corrugated polypropylene pipe (HPCPP), solid or perforated, pipe capable of smooth flow as manufactured by Advanced Drainage Systems or approved equal. Pipe diameters of 12 inches through 60 inches shall meet the requirements of AASHTO M330, or ASTM F2881. HPCPP storm sewer pipe shall be supplied in minimum of twenty-foot lengths except where connections to structures warrant a shorter length to be installed.

Joints shall be joined with the bell and spigot joint. The joint shall be watertight according to the requirements of ASTM D3212. Gaskets shall be made of polyisoprene meeting the requirements of ASTM F477 with the addition that the gaskets shall not have any visible cracking when tested according to ASTM D1149 after seventy-two-hour exposure in 50 PPHM ozone at 104° F. Gaskets shall be installed by the pipe manufacturer and covered with a removable wrap to ensure the gasket is free from debris. Joints shall remain watertight when subjected to a 1.5-degree axial misalignment. A joint lubricant supplied by the manufacturer shall be used on the gasket and bell during assembly. Fittings shall conform to AASHTO M330 or ASTM F2881. Bell and spigot connections shall utilize a spun-on or welded bell and valley or saddle gasket meeting the watertight joint performance requirements of AASHTO M330, or ASTM F2881. Fabricated fittings shall be welded on the interior and exterior at all junctions. The HPCPP and joints shall have Cell Classification 435400C as specified by ASTM Designation D3350.

An approved structure coupling, waterstop or grouted interior and exterior shall be installed around the pipe when it enters and leaves each structure, concrete encasement, or anchor.

All pipe materials must conform to PennDOT Form 408, Sections 601 and 610.

Cast-In-Place Concrete.

Materials. The component materials of the concrete shall meet the following requirements:

Portland cement shall conform to the Standard Specifications for Portland Cement of the American Society for Testing Materials, Serial Designation C-150, Type I or Type III.

An air-entraining admixture shall be used. The use of all other admixtures shall require prior approval of the owner.

Water used in mixing and curing concrete shall be fresh, clean, and free from injurious amounts of sewage, oil, acid, alkali, organic matter, or other deleterious substances. Water shall be approved for human consumption.

(d)

Concrete aggregate shall conform to the "Specifications for Concrete Aggregate," ASTM Designation C-33.

All concrete shall be ready mix and shall conform to the requirements of PennDOT Form 408, Section 704. The concrete shall have a minimum allowable compressive strength of 4,500 psi in 28 days. The maximum allowable slump as delivered to the site shall be four inches. The concrete shall have an air content of 5% ± 1%.

All concrete shall be placed in accordance with applicable sections of:

ACI Standard 614 "Recommended Practice for Measuring, Mixing, and Placing."

ACI Standard 360R "Recommended Practice for Cold Weather Concreting."

ACI Standard 305R "Recommended Practice for Hot Weather Concreting."

Concrete shall not be placed on frozen, loose, or otherwise unstable ground, or when debris, oil, or water are present. All concrete shall be thoroughly vibrated into place. All concrete surfaces shall be finished by experienced finishers to a smooth finish as soon after placing as conditions permit. No cement, plaster, or cement brush coats will be acceptable.

Pre-Cast Structures.

All pre-cast structures and associated materials (inlet or manhole frames, lids, grates, and pipe, etc.) shall conform to PennDOT Form 408, Sections 605, 606 and 607, and PennDOT Publication 72 Roadway Construction Standards, and be supplied by a manufacturer listed in Bulletin 15, Approved Construction Materials.

For all inlet structures, provide cast iron frame and structural steel grate as per the contract drawing details or appended details. No pre-cast concrete frames or cast-in-place concrete frames are permitted.

Storm Sewer Installation.

Pipe Installation.

All pipe shall be stored, handled and installed in strict accordance with the manufacturers' recommendations. All pipe shall be inspected for damage before installation in the trench. No damaged pipe will be installed in the trench. All dirt and other foreign materials shall be removed from the interior of the pipe prior to placement.

No pipe shall be placed in trenches with pooled or flowing water. All open ends shall be plugged to prevent the entrance of water, dirt, and other foreign objects.

Pipe shall be laid with bell ends facing the direction of laying, unless otherwise specified by the Township. Laying of pipe shall start at the lowest elevation and shall proceed towards the highest elevation with the bell ends of the pipe upgrade.

All pipe and fittings shall be carefully examined for cracks and other defects while suspended above the trench immediately before installation in final position. Defective pipe and fittings shall be rejected.

The interior of all pipe shall be free of dirt and foreign material at all times.

Trench Excavation.

The trench shall be excavated so that the pipe can be laid to the alignment and grade required. All excavation left open overnight shall be covered with suitable steel plates. The trench shall be provided with sheeting or shall be properly braced where necessary to protect the lines, the labor employed on the work and property adjoining the trench. The developer shall be responsible for sheeting and bracing in accordance with all prevailing, applicable federal, state and local regulations.

The clear space between wall of trench and barrel of the pipe shall not be less than six inches or more than 12 inches on each side to a height of not less than 12 inches above the top of the pipe. If sheeting is required, the foregoing dimensions shall be applicable to the inside faces of the sheeting.

Ledge rock, boulders and large stones shall be removed to provide a clearance of not less than six inches below the subgrade and on each side of the pipe. Trenches excavated for rock clearance shall be backfilled as specified herein, with six inches of AASHTO No. 57 stone. These materials shall be furnished and installed at no extra compensation to the contractor. For ductile iron and reinforced concrete pipe, select backfill shall be used to fill from the centerline of the pipe, to at least 12 inches above the top of the pipe.

If the bottom of the trench is found to be of unsuitable material, including but not limited to muck, quicksand, soft clay, ashes, cinders, refuse, vegetable, or other organic material that is not suitable for pipe foundation subgrade or backfill, the contractor shall excavate and remove such unsuitable material to the width and depth as approved by the Township.

Backfill.

Submit certifications verifying that materials comply with specification requirements of PennDOT 408 and that the source is PennDOT approved per Publication 34, Aggregate Producers: Bulletin 14.

In no case will the wheel or track of a backhoe or loader be utilized to compact trench backfill.

Detailed backfilling procedures are separated into three zones:

The pipe zone, which begins at a minimum depth of six inches below the bottom of the pipe and ends at a point 12 inches above the crown of the pipe;

The intermediate zone, which begins at a point 12 inches above the crown of the pipe and ends at a point 18 inches below finish grade; and

A final zone that includes the top 18 inches of trench area.

Pipe Zone Preparation and Backfill: The trench shall be excavated to a depth as to provide a uniform and continuous bearing and support for the pipe, as required by the approved plans. Pipelines shall be supported on and bedded by AASHTO No. 57 stone (no slag). The bedding material shall be placed to a minimum depth of 0.5 feet below the bottom of the pipe and for the full width of the trench. The bedding material shall be installed to a point 12 inches above the top of the pipe.

Intermediate Zone Backfill. The select material excavated during trenching and other construction operations, shall be used as backfill in the intermediate zone as defined herein under all unimproved (e.g., lawn areas) surfaces. The backfill shall contain no stones more than six inches in the largest dimension, or frozen, excessively wet, or otherwise unsuitable material. Where the open-cut trench is located under improved areas (e.g., roadways, streets, state highways, berms, or other improved areas), the entire (full depth) intermediate zone shall be backfilled with 2A (no slag). The entire depth of the intermediate zone, regardless of material, shall be placed in layers and compacted to maximum density using suitable vibratory compaction equipment. Maximum lift shall be eight inches.

Final Zone Backfill. Backfill of the final zone of the trenches occurring in roadways, streets and the shoulder of a road shall be accomplished with No. 2A modified stone or gravel (no slag) per Form 408 Section 703 (Quality Table B Type B, or better; Gradation per Table C), aggregate compacted in four-inch layers.

Structure Installation.

Structure Inverts. Manhole/inlet inverts, including sewer intersections, shall in all cases be formed with Class C concrete. The finished product shall be clean and smooth offering no obstruction to flow. The prevailing sewer grade shall be carried through the manhole. Wherever sewers enter manholes/inlets such that the invert of the sewer is less than two feet above the structure bottom, a channeled concrete fillet shall be constructed to prevent the flow from splashing into the structure. The channeled concrete fillet shall be steel trowel finished.

Finished Grade at Structures. Manhole tops in lawn or paved areas will be level or flush with the finished surface, unless specifically otherwise noted on the approved plans. Inlets will either be flush or sumped, as noted on the approved plans.

Backfill Material for Structure Excavation. Where structures are installed in paved streets, alleys, roads, berms, parking areas, or other improved surface areas, the entire excavated area around the structure shall be backfilled with AASHTO No. 57 or 2A (no slag), or material approved by the owner's representative. The stone shall be installed completely around the structure from its base to the bottom of the improved surface area. The stone shall continue out of the structure excavated area through and around the inlet and outlet pipe trench area so that its surface forms an approximate forty-five-degree angle with the top of the manhole. Where structures are installed in unimproved areas, the entire excavated area around the structure shall be backfilled with a stone or material from the base to a point 12 inches above the top of the highest pipe entering the structure and with select material to the surface as defined herein.

Alignment, Grade and Layout of The Work.

Verify all existing utilities in the field prior to start of excavation work. Comply with One Call (Act 38) requirements. Contact all utility companies that may have facilities within the work area.

Field check and verify benchmark elevations for all work before start of construction. Set/adjust final grades for proposed storm sewer lines after all existing utilities and other obstructions have been located by test holes. Dig all necessary test holes to locate any existing utilities that may be in conflict with the alignment and grade of the proposed storm sewer. Meet all existing conditions and grades along the route of the proposed sewer lines.

The sewer line shall be laid and maintained to the required lines, grades, and minimum depths as shown on the approved plans. Any realignment must first be approved by the Township.

All storm sewers proposed for dedication as public infrastructure must have a minimum diameter of 15 inches and a minimum grade of 1%.

The use of a laser is required for all storm sewer installation. Pipeline acceptance testing shall include mandrel and full moon spotlight. All storm sewers must be installed to line and grade. Curved pipe will not be accepted. Changes in vertical or horizontal alignment must occur at a suitable junction box (i.e., inlet or manhole).

Maintain and protect traffic during construction. Coordinate all work with local emergency response and transportation agencies. Provide all required signage for temporary traffic control. Maintain all roads, sidewalks, steps and traveled ways clean, free of mud or dust, and in a condition usable by residents in the area during construction. Maintain access to all driveways during construction.

Maintain all existing storm sewers and sanitary sewers in service during construction. Contain sanitary sewage to sanitary sewers. Do not discharge to the ground surface or to groundwaters.

Maintain daily as-built record information including wye stationing. Give Township's representative copies of all delivery slips for all materials delivered to the project.

Coordinate and schedule all work as required with utility companies, other contractors, and local, municipal, or state government agencies. Notify Township and Township Engineer 48 hours in advance of starting the project.

Pipeline acceptance testing shall include mandrel and full moon spotlight. All storm sewers must be installed to line and grade. Curved pipe will not be accepted. Changes in vertical or horizontal alignment must occur at a suitable junction box (i.e., inlet or manhole).

[Ord. No. 501, 8/9/2022]

Install storm sewers and roadways per the approved plans and per North Fayette Township Regulations.

Complete and submit record drawings (as-builts) of storm sewers and roadways for review and approval by North Fayette Township. Record drawings must be accepted prior to performance bond being released.

Provide eight-and-one-half-inch-by-eleven-inch exhibit drawing and metes and bounds legal description of roadway rights of way to be dedicated. All rights-of-way must be recorded and conveyed to North Fayette Township prior to release of performance bond.

After the storm sewer line has been installed for 30 days, testing will need to be completed per North Fayette Township regulations. Pipeline acceptance testing shall include mandrel and full moon spotlight.

Submit maintenance bond for 18 months from the date of the Township's acceptance of storm sewers and roads for an amount of 15% the cost of construction.

6.

At month 16 of the maintenance bond period, CCTV all storm sewer lines and submit videos and data to the Township for review.

7.

Escrow deposit shall remain in place until the expiration date as set forth in any agreements entered into between the Township of North Fayette and the developer or unless otherwise agreed to by the Township of North Fayette, but at a minimum until the eighteen-month maintenance bond expires.

[Ord. No. 501, 8/9/2022]

Sanitary Sewer Materials.

PVC Sewer Pipe.

Polyvinyl chloride (PVC) sewer pipe and fittings shall conform to ASTM Specifications D-3034, of latest revision. Pipe shall be SDR 35 with a minimum pipe stiffness of 46 psi. For installation of sewer pipe in excess of 18 feet in depth, SDR 26 shall be required. Additional wall thickness will be required for additional depth, as required by the Township. PVC sewer pipe shall be supplied in minimum 12.5-foot lengths except where connections to manholes or main line wye branches require a shorter length to be installed. Joints shall be either solvent cement or elastomeric gasket type shall be watertight and shall comply with ASTM 3212. The PVC plastic used in the pipe shall have a cell classification of 12454-B, 12454-C, or 13364-B with a minimum tensile modulus of 500,000 psi as defined in ASTM D-1784. The PVC plastic used in the fittings shall have a cell classification of 12454-B, 12454-C or 13343-C as defined in ASTM D-1784. Rubber gaskets shall comply in all respects with the physical requirements of ASTM-F-477, D-1869, C-361 or C-433.

PVC pipe shall be tested for pipe dimensions, fitting dimensions, pipe flattening, impact resistance, pipe stiffness, joint tightness, and extrusion quality in accordance with ASTM D-3034.

An approved manhole coupling or waterstop shall be installed around the pipe when it enters and leaves each manhole, concrete encasement, or anchor.

Ductile Iron Pipe and Fittings.

Ductile iron pipe shall be designed in accordance with ANSI Standard A-21.50 and manufactured in accordance with ANSI Standard A-21.51. Fittings shall conform to the requirements of ANSI Standard A-21.10. All buried pipe shall be furnished with push-on or mechanical joints conforming with ANSI Standard A-21.11.

Pipe and fittings shall be furnished in ASTM thickness Class 50 unless otherwise specifically noted on the plans or described herein.

Ductile iron pipe fittings (D.I. or C.I.) used for the sanitary sewers shall have a standard thickness cement lining and shall be lined and coated with a standard thickness bituminous material inside and outside. Lining and coatings shall be in accordance with ANSI A21.4.

All ductile iron pipe and fittings, including valves, shall be installed with a single layer of two-ply cross-laminated high-density polyethylene encasement per AWWA C105, meeting the following nominal specifications; AWWA C105-93, Section 4.1.2, High-Density Cross-Laminated Polyethylene Film, Type III, Class C (black), Grade 33, tensile strength, 5,000 psi minimum elongation 100%, thickness nominal 0.004 inch (4 mil).

Steel Casing Pipe.

Steel casing pipe shall be welded steel pipe, manufactured, and tested in accordance with ASTM A-120, Grade B, with a minimum yield strength of 35,000 psi. The pipe shall be new, visibly sound, and round. Minimum casing wall thickness shall be as specific on SS-11 of the Township Minimum Construction Standards and Standard Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Wye Branches for Gravity Main Sewers.

Main line wye branches shall be six-inch diameter PVC-SDR 26-ASTM-3034 pipe. One wye branch shall be installed at each dwelling's service lateral and at those locations identified on the approved plan.

Service Sewers for Gravity Main Lines.

The service sewers shall be six inches and of the same material as the main line sewer. Class of pipe shall be: PVC-SDR 26 ASTM D-3034.

The service sewers shall be at a class or strength to suit the construction installation condition as recommended by the manufacturer.

Precast Concrete Manholes, Frames, Cover and Ladder Bars.

Precast manholes shall be four feet zero inches in diameter at the barrel, unless specified otherwise on the approved plans, and reinforced throughout with reinforcing mesh. Cone sections shall be straight side type and shall be cast of heavier section than barrel sections. Barrel sections shall conform to ASTM Specification C-478-72a. Precast sections shall have bell and spigot ends. Manhole steps shall be as specified herein, poured in place when fabricated. Concrete strength shall be not less than 4,500 psi. Top cone sections shall accommodate a standard cast iron frame and cover as specified and shall be provided with 2 3/4-inch anchor bolts.

Openings in the manhole base section shall be equipped with a pipe to manhole rubber gasket seal. The rubber gasket shall be cast integrally into the pipe openings in the manhole base at the time of manufacture. The rubber gasket shall be watertight and manufactured in accordance with ASTM C-923. The rubber gasket shall be approved by the Engineer.

Manholes shall conform to the Detail SS-2 as shown in the Township Minimum Construction Standards and Standard Details.[2]

[2]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

All manholes shall be constructed watertight and leak proof. To ensure watertightness and longevity, an approved bitumastic coating shall be applied to the entire exterior.

Manhole cone sections and barrel sections shall not have more than two lifting holes per section for handling and installation purposes. After installation, the holes shall be sealed to the owner's satisfaction.

Manhole inverts, including sewer intersections unless otherwise shall in all cases be formed with Class C concrete. The finished product shall be clean and smooth offering no obstruction to flow. The prevailing sewer grade shall be carried through the manhole unless otherwise directed by the owner's representative. Wherever sewers enter manholes such that the invert of the sewer is less than two feet above the manhole bottom, a channeled concrete fillet shall be constructed to prevent the flow from splashing into the manhole. The channeled concrete fillet shall be steel trowel finished.

Manhole frames and covers shall be of good quality cast iron and of such character as will make the metal of the casting strong, tough, durable, and of even grain. The metal shall conform in all respects to the Standard Specifications for gray iron castings as set forth by ASTM 48 Class 30, or better. The castings shall be smooth, free from scale, lumps, blisters, sand holes, or other defects of every nature. All castings shall be manufactured true to pattern. Frames and covers shall have machined bearing surfaces to prevent rocking and rattling.

All manholes shall be nominal twenty-seven-inch diameter opening.

All covers shall be stamped "NFT Sanitary Sewer" with two-inch-high capital letters. Frames shall be provided with two holes in the base flange for anchoring.

The final setting of manhole castings shall be such that they conform with the existing ground slopes and shall be set to exclude surface water.

(11)

Ladder bars shall be fabricated of gray iron construction (minimum tensile strength of 40,000 psi) similar to Pattern No. 1487 as manufactured by Allegheny Foundry Company, Pittsburgh, Pennsylvania, or a (minimum) three-eighths-inch round steel step encapsulated with copolymer polypropylene plastics. The ladder bars shall be capable of withstanding the design loading required in ASTM C-478 specifications at a temperature of 0° F. with no structural failure.

(12)

Manhole steps shall be evenly spaced vertically on twelve-inch centers. Manhole steps shall be poured in place when the manhole is fabricated. Loose and/or poorly aligned manhole steps shall be a cause for rejecting manholes.

(13)

All sanitary sewer materials including precast concrete products, frames, lids, castings, steps, and pipe must come from a supplier listed in Bulletin 15.

[Ord. No. 501, 8/9/2022]

Pipe Installation.

All pipe shall be stored, handled and installed in strict accordance with the manufacturers' recommendations. All pipe shall be inspected for damage before installation in the trench. No damaged pipe will be installed in the trench. All dirt and other foreign materials shall be removed from the interior of the pipe prior to placement.

No pipe shall be placed in trenches with pooled or flowing water. All open ends shall be plugged to prevent the entrance of water, dirt, and other foreign objects.

Pipe shall be laid with bell ends facing the direction of laying, unless otherwise specified by the Township. Laying of pipe shall start at the lowest elevation and shall proceed towards the highest elevation with the bell ends of the pipe upgrade.

All sanitary sewer mains shall have a minimum diameter of eight inches with a minimum grade of 0.5%.

The use of blocks for supporting pipe and fittings will not be permitted.

All pipe and fittings shall be carefully examined for cracks and other defects while suspended above the trench immediately before installation in final position. Defective pipe and fittings shall be rejected.

The interior of all pipe shall be free of dirt and foreign material at all times.

Trench excavation.

The trench shall be excavated so that the pipe can be laid to the alignment, and grade required. All excavation left open overnight shall be covered with suitable steel plates. The trench shall be provided with sheeting or shall be properly braced where necessary to protect the lines, the labor employed on the work and property adjoining the trench. The developer shall be responsible for sheeting and bracing in accordance with all prevailing, applicable federal, state and local regulations.

The clear space between wall of trench and barrel of the pipe shall not be less than six inches or more than 12 inches on each side to a height of not less than 12 inches above the top of the pipe. If sheeting is required, the foregoing dimensions shall be applicable to the inside faces of the sheeting.

Ledge rock, boulders and large stones shall be removed to provide a clearance of not less than six inches below the subgrade and on each side of the pipe. Trenches excavated for rock clearance shall be backfilled as specified herein, with six inches of AASHTO No. 57 stone. These materials shall be furnished and installed at no extra compensation to the contractor. For ductile iron and reinforced concrete pipe, select backfill shall be used to fill from the centerline of the pipe, to at least 12 inches above the top of the pipe.

If the bottom of the trench is found to be of unsuitable material, including but not limited to muck, quicksand, soft clay, ashes, cinders, refuse, vegetable, or other organic material that is not suitable for pipe foundation subgrade or backfill, the contractor shall excavate and remove such unsuitable material to the width and depth as approved by the Township.

Backfill.

Submit certifications verifying that materials comply with specification requirements of PennDOT 408 and that the source is PennDOT approved per Publication 34, Aggregate Producers: Bulletin 14.

In no case will the wheel or track of a backhoe or loader be utilized to compact trench backfill.

Detailed backfilling procedures are separated into three zones:

The pipe zone, which begins at a minimum depth of six inches below the bottom of the pipe and ends at a point 12 inches above the crown of the pipe;

The intermediate zone, which begins at a point 12 inches above the crown of the pipe and ends at a point 18 inches below finish grade; and

A final zone that includes the top 18 inches of trench area.

Pipe Zone Preparation and Backfill. The trench shall be excavated to a depth as to provide a uniform and continuous bearing and support for the pipe, as required by the approved plans. Pipelines shall be supported on and bedded by AASHTO No. 57 stone (no slag). The bedding material shall be placed to a minimum depth of 0.5 feet below the bottom of the pipe and for the full width of the trench. The bedding material shall be installed to a point 12 inches above the top of the pipe.

Intermediate Zone Backfill. The select material excavated during trenching and other construction operations, shall be used as backfill in the intermediate zone as defined herein under all unimproved (e.g., lawn areas) surfaces. The backfill shall contain no stones more than six inches in the largest dimension, or frozen, excessively wet, or otherwise unsuitable material. Where the open-cut trench is located under improved areas (e.g., roadways, streets, state highways, berms, or other improved areas), the entire (full depth) intermediate zone shall be backfilled with 2A (no slag). The entire depth of the intermediate zone, regardless of material, shall be placed in layers and compacted to maximum density using suitable vibratory compaction equipment. Maximum lift shall be eight inches.

Final Zone Backfill. Backfill of the final zone of the trenches occurring in roadways, streets and the shoulder of a road shall be accomplished with No. 2A modified stone or gravel (no slag) per Form 408 Section 703 (Quality Table B Type B, or better; Gradation per Table C), aggregate compacted in four-inch layers.

Structure Installation.

Structure Inverts. Manhole/inlet inverts, including sewer intersections, shall in all cases be formed with Class C concrete. The finished product shall be clean and smooth offering no obstruction to flow. The prevailing sewer grade shall be carried through the manhole. Wherever sewers enter manholes/inlets such that the invert of the sewer is less than two feet above the structure bottom, a channeled concrete fillet shall be constructed to prevent the flow from splashing into the structure. The channeled concrete fillet shall be steel trowel finished.

Finished Grade at Structures. Manhole tops in lawn or paved areas will be level or flush with the finished surface, unless specifically otherwise noted on the approved plans. Inlets will either be flush or sumped, as noted on the approved plans.

Backfill Material for Structure Excavation. Where structures are installed in paved streets, alleys, roads, berms, parking areas, or other improved surface areas, the entire excavated area around the structure shall be backfilled with AASHTO No. 57 or 2A (no slag), or material approved by the owner's representative. The stone shall be installed completely around the structure from its base to the bottom of the improved surface area. The stone shall continue out of the structure excavated area through and around the inlet and outlet pipe trench area so that its surface forms an approximate forty-five-degree angle with the top of the manhole. Where structures are installed in unimproved areas, the entire excavated area around the structure shall be backfilled with a stone or material from the base to a point 12 inches above the top of the highest pipe entering the structure and with select material to the surface as defined herein.

Alignment, Grade and Layout of the Work.

All sanitary sewer installations must comply with the Township of North Fayette Sewer System Rules and Regulations, all other Township codes and requirements, the Allegheny County Health Department Plumbing Code, and all other local, county, state, and federal codes and regulations.

Verify all existing utilities in the field prior to start of excavation work. Comply with One Call (Act 38) requirements. Contact all utility companies that may have facilities within the work area.

Field check and verify benchmark elevations for all work before start of construction. Set/adjust final grades for proposed storm sewer lines after all existing utilities and other obstructions have been located by test holes. Dig all necessary test holes to locate any existing utilities that may be in conflict with the alignment and grade of the proposed storm sewer. Meet all existing conditions and grades along the route of the proposed sewer lines.

The sewer line shall be laid and maintained to the required lines, grades, and minimum depths as shown on the approved plans. Any realignment must first be approved by the Township.

The use of a laser is required for all sanitary sewer installation. Pipeline acceptance testing shall include mandrel and full moon spotlight. All sewers must be installed to line and grade. Curved pipe will not be accepted. Changes in vertical or horizontal alignment must occur at a suitable junction box (manhole).

Maintain and protect traffic during construction. Coordinate all work with local emergency response and transportation agencies. Provide all required signage for temporary traffic control. Maintain all roads, sidewalks, steps and traveled ways clean, free of mud or dust, and in a condition usable by residents in the area during construction. Maintain access to all driveways during construction.

Maintain all existing storm sewers and sanitary sewers in service during construction. Contain sanitary sewage to sanitary sewers. Do not discharge to the ground surface or to groundwaters.

Maintain daily as-built record information including wye stationing. Give Township's representative copies of all delivery slips for all materials delivered to the project.

Coordinate and schedule all work as required with utility companies, other contractors, and local, municipal, or state government agencies. Notify Township and Township Engineer 48 hours in advance of starting the project.

Cut and plug all existing sanitary sewer lines to be taken out of service. Plug with suitable waterproof non-shrink grout at least one foot into pipe. Remove manholes to minimum three feet below grade plug inlet and outlet pipes as directed. Backfill to grade with suitable material. Return castings to North Fayette Township. Grout all abandoned sewers solidly in place.

[Ord. No. 501, 8/9/2022]

Pressure Air Test. All sewers (mains and service lines) shall be air tested for leakage and any section of sewer showing leakage in excess of the amount hereinafter set forth shall be rejected.

The air test shall be conducted by the contractor under the observation of the North Fayette Township's representative and shall be performed with AIR-LOC equipment manufactured by Cherne Industrial, Inc., Hopkins, Minnesota or approved equal.

The contractor may desire to perform an air test for his own purposes prior to backfilling; however, the "acceptance air test" shall be performed after backfilling has been completed.

Each section of sewer being tested shall be temporarily sealed off by means of suitable plugs. All ends of lateral stubs shall be sealed with suitable removable caps securely fastened to withstand internal test pressures.

The procedure and criteria to be used for air testing shall conform to that described by the National Clay Pipe Institute.

All gauge test pressures in the test shall be increased by the amount of groundwater pressure at the crown of the pipe.

Plugs shall be properly secured, and care shall be exercised in their removal. All plugs shall be blocked and carefully braced to prevent sudden release of compressed air, slippage, or blowout due to internal pressure.

No personnel shall be permitted in the manholes or at the end of the pipe test section during testing.

The pressurizing equipment shall have a safety gauge which shall limit the loading on the sewer line to 10 psi. The calibrations on all pressure gauges shall be no greater than 0.10 psi.

If the pipe installation fails to meet test requirements, the developer shall determine, at his own expense the source or sources of leakage, and he shall repair or replace all defective materials and workmanship.

Immediately following the testing, the entire interior of the pipe shall be inspected by a North Fayette Township representative, and in the event any joints are found to be leaking, they shall be properly repaired, regardless of whether or not the pipe meets the air/pressure test requirements. Under no circumstances shall infiltration in any section of pipe between two adjacent manholes exceed 200 gallon/mile/inch diameter/day.

K.

All sewer pipes shall be tested by inducing low-pressure air, internally, into the pipe. The air shall be slowly introduced into the pipe and the pressures shall gradually be increased within the test section to 5.0 psi. The test section shall be required to sustain that 5.0 psi minimum without loss or drop in pressure for a time period of five minutes. In the event pressure loss does occur, appropriate repairs or reconstruction shall be made, the test procedure shall be made, and the test procedure shall be repeated until the test criteria (5.0 psi for five minutes) are successfully accomplished.

L.

Where groundwater elevations prevail higher than the top of the sewer pipe being tested, 0.5 psi per foot of hydrostatic head above the top of the sewer pipe shall be added to the test pressure.

Mandrel/Deflection Test. All PVC pipes shall also be tested for pipe deflection. Said tests shall not be performed until the backfill has been in place for at least 30 days; maximum acceptable deflection shall be 5% of the internal diameter. Said testing may be performed with a deflectometer, calibrated internal TV equipment or a mandrel similar or equal to that manufactured by Cherne Industries, Inc. Deflection testing equipment and procedures shall be submitted for approval by the engineer.

Vacuum Testing of Manholes. After erection of the manholes, connection of the sewers, and placement of the backfill to approximately the finished ground elevation, each manhole shall be vacuum tested for water tightness. Connecting pipes shall be securely plugged and a vacuum testing device similar to that manufactured by P.A. Glazier, Inc., or equal, shall be placed and sealed within the top of the precast manhole section. A vacuum of 10 inches of Hg shall be drawn after which the vacuum pump shall be shut off. If the indicated vacuum pressure drops to nine inches in less than one minute, the test apparatus shall be removed, and appropriate repairs shall be performed. The test shall be repeated, as necessary, until a time period of a minimum of one minute occurs before the vacuum pressure drops one inch.

[Ord. No. 501, 8/9/2022]

Install sanitary sewers per the approved plans and per North Fayette Township regulations.

Complete and submit record drawings (as-builts) of sanitary sewers for review and approval by North Fayette Township. Record drawings must be accepted before any sewage permits will be issued for a development and all sewer rights-of-way must be recorded and conveyed to North Fayette Township.

After the sewer line has been installed for 30 days, complete testing per North Fayette Township regulations. Tests shall include:

Manhole vacuum test for each manhole; and

Pressure air test of the entire sewer line; and

Mandrel (deflection) test of the entire sewer line.

Submit maintenance bond for 18 months from the date of the certificate of completion of sanitary sewers for an amount of 15% the cost of construction.

At month 16 of the maintenance bond period, CCTV all sewer lines and submit videos and data to the Township.

6.

Escrow deposit shall remain in place until the expiration date as set forth in any agreements entered into between the Township of North Fayette and the developer or unless otherwise agreed to by the Township of North Fayette.

7.

All sanitary sewers must be accepted by the Township as public infrastructure prior to issuance of any building permits.

[Ord. No. 501, 8/9/2022]

Refer to Township Code Chapter 23 for information regarding stormwater management design requirements.

Refer to Details SW15-SW18 of the Township Minimum Construction Standards and Standard Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

[Ord. No. 501, 8/9/2022]

General Requirements. All driveways shall be located, designed, constructed, and maintained in such a manner as not to interfere or be inconsistent with the design, maintenance, and drainage of the street.

General Location Restrictions. All driveways shall be permitted at locations in which:

Sight distance is adequate to safely allow each permitted movement to be made into or out of the access driveway;

The driveway will not create a hazard; and

Adequate sight distance at all driveways shall conform to PENNDOT latest Publication 282 (Highway Occupancy Permit Handbook) and Pennsylvania Code Title 76 Transportation, Chapter 441 (Access to Occupancy of Highways by Driveways and Local Roads).

Residential Driveway. Within the right-of-way of Township streets, residential driveways shall be constructed in accordance with Details RD-18 and RD-19 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Grade. Driveways shall be constructed to conform to the grade of the finished shoulders. All descending or ascending grades of driveways shall begin at the street right-of-way. No stormwater shall be permitted to drain onto Township streets.

[Ord. No. 501, 8/9/2022]

Where fire hydrants are required, they shall be installed pursuant to specifications of the Western Allegheny County Municipal Authority, or other entity having jurisdiction. Location within a proposed public right-of-way shall be in accordance with Detail RD-8 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

[Ord. No. 501, 8/9/2022]

Guiderail shall be installed in accordance with PennDOT Roadway Construction Standards RC-51, current edition, PennDOT Publication 13M, current edition and the AASHTO Roadside Design Guide, current edition.

[Ord. No. 501, 8/9/2022]

Where communication service (data/telephone/cable) is to be installed, it shall be installed pursuant to the specifications of the service provider having jurisdiction. Utility location within a proposed public right-of-way shall be in accordance with Detail RD-7 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

[Ord. No. 501, 8/9/2022]

Where electric service is to be installed, it shall be installed pursuant to the specifications of the service provider having jurisdiction. Utility location within a proposed public right-of-way shall be in accordance with Detail RD-7 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

[Ord. No. 501, 8/9/2022]

Where gas service is to be installed, it shall be installed pursuant to the specifications of the service provider having jurisdiction. Utility location within a proposed public right-of-way shall be in accordance with Detail RD-7 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

[Ord. No. 501, 8/9/2022]

Where potable water service is required, is shall be installed pursuant to specifications of the Western Allegheny County Municipal Authority, or other entity having jurisdiction. Utility location within a proposed public right-of-way shall be in accordance with Detail RD-7 of the Township Minimum Construction Standards and Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

[Ord. No. 501, 8/9/2022]

Type, Material and Size.

Monuments.

Monuments shall be constructed in accordance with requirements of Detail RD-22 of the Township Minimum Construction Standards and Standard Details.[1] Location of monumentation shall be in accordance with the requirements of the Township Subdivision and Land Development Ordinance (Chapter 22).

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Iron Pins.

Capped iron pins identifying the professional responsible for their placement of least 1/2 inch in diameter and not less than 30 inches in length or other material acceptable to the engineer shall be installed at locations as identified in the Township Subdivision and Land Development Ordinance (Chapter 22).

Detection.

Monuments and markers shall be detectable with conventional ferrous metal or magnetic locators.

[Ord. No. 501, 8/9/2022]

Storm and Sanitary Sewer Infrastructure.

Submittals.

A record drawing set shall be kept by the developer separate from other construction drawings and shall not be used for other purposes. Upon completion of construction the developer shall provide:

One neatly and legibly marked set of full-size record drawings, sealed by the professional responsible for their preparation.

As-Built CAD drawings. Electronic format shall be AutoCAD, latest version.

Record drawings must be received an accepted prior to the Township's consideration of acceptance of dedication of infrastructure.

Drawing Requirements.

Provide additional drawings or mark on the drawings to show the following:

Underground utilities and other items including the location of lines and appurtenances. Show the actual size and types of material used. Show locations by facility coordinates or dimensioned to permanent surface structures. Minimum requirements for accuracy as specified in the following table:

Description	Location	Elevation	Notes
Temporary facilities and construction materials left at end of project	CL ± 1 feet	CL ± 1 feet	Includes shoring, all underground items, and concrete
Pressurized piping	CL ± 1 feet	CL ± 0.50 feet	Includes water and process lines
Storm drains, sewer lines inverts and cleanouts	CL ± 1 feet	CL ± 0.01 feet	Recalculate slope if shown on the drawings
Sewer interceptors and trunks.	Coordinates, stations, and offsets. CL ± 1 feet	IE ± 0.01 feet	Recalculate actual slopes
Laterals and side sewers	CL ± 1 feet	CL ± 0.50 feet	Include measurements based on fixed objects (i.e., house corners)
Stormwater cross connection	CL ± 1 feet	CL ± 0.50 feet	Include measurements based on fixed objects (i.e., house corners)
CL = Centerline - IE = Invert Elevation - FT = Feet

The actual arrangement and routing of embedded conduit and piping is relative to its location and proportion to other work. The location does not need to be dimensioned or drawn to scale.

Other drawings as may be required by the Township or the Township Engineer.

(d)

Provide dimensions from more than one permanent structure where required for accurate location.

Mass Grading Record Drawings and Certification. Prior to request for bond release for earthwork items or application for building permits, the developer shall submit an as-built grading plan, prepared, and sealed by a qualified professional registered in the Commonwealth of Pennsylvania confirming that the as-built grading conforms to that proposed on the approved plan. The as-built grading plan shall be prepared in accordance with applicable requirements of this Code, the Township Subdivision and Land Development Ordinance[1] and specifically include the following:

Contours, at intervals of two feet, as depicted on the approved grading plan.

As-built contours, at intervals of two feet, as determined by field survey following completion of mass grading. This includes swales, berms or other stormwater conveyance facilities when constructed. As-built contour line types should be depicted such that they are clearly distinguishable from the originally proposed contours.

Certification, signed and sealed by a qualified design professional registered in the Commonwealth of Pennsylvania that the as-built grading conforms to the approved plan and has not modified the stormwater management plan for the development.

Editor's Note: See Ch. 22, Subdivision and Land Development.

[Ord. No. 501, 8/9/2022]

Prior to application for building permit for any residential home site within the Township, the property owner or developer must submit a plot plan to demonstrate conformance with zoning, grading and stormwater management parameters proposed in the approved subdivision plan, land development plan and/or planned residential development plan, as applicable. No building permit shall be approved without submission of a plot plan, prepared, and sealed by a qualified professional, depicting the following:

A title block containing:

The name, plan book volume and page number of the plan in which the lot is located.

The lot number from the reference recorded plan.

The location of lot as Township of North Fayette, Allegheny County, Pennsylvania.

The date of plan preparation.

The scale of the plan.

The name and address of the applicant and/or property owner.

The name and address of the qualified professional responsible for preparation of the plan.

A North arrow.

The property boundary described by bearing and distance.

The total lot area measures in both square feet and acres.

The name and width of abutting roadway right(s)-of-way.

The location, width and purpose of easements traversing or abutting the lot.

The required front, rear, and side setback lines.

The location and dimensioned perimeter of all proposed structures.

Labeled dimensions of the distance between proposed structures and adjacent property lines.

The location of proposed driveway, parking areas, patios, or other proposed impervious surfaces.

K.

A calculation, in tabular form, of the proposed lot coverage.

L.

Site grading and elevation data as follows:

The proposed first floor elevation.

Spot elevations identifying surrounding grade elevation for each side of the proposed structure.

Spot elevation information at property corners and at intermediate locations along property lines to depict proposed topography. Spot elevations along property lines shall not be separated by greater than 50 feet.

Directional arrow notation designating stormwater runoff paths. Notation of runoff paths should be provided in sufficient quantity and location to demonstrate compliance with runoff patterns propose by the stormwater management plan.

M.

The location of existing and proposed stormwater conveyance facilities, including swales, berms, yard drains, inlets, storm sewers and other similar features.

Final as-built plan.

Upon completion of construction, and prior to application for an occupancy permit for any residential home site within the Township, the property owner or developer shall submit an as-built plot plan, prepared, and sealed by a qualified professional, to the Township to demonstrate compliance with the approved plot plan.

Prior to application for an occupancy permit, the applicant must schedule a field review with the Building Code Official to review the as-built site conditions with respect to the provided as-built plot plan. An occupancy permit shall not be issued until the Township determines that construction and on-lot grading has been performed in compliance with the approved plot plan and all applicable ordinances, regulations, permits, resolutions, and codes of the Township, and of any other governmental agencies having jurisdiction thereover.

Should deviations in grading, runoff patterns or other site conditions be observed, the Township shall require certification from a qualified professional licensed in the Commonwealth of Pennsylvania to the Township and to the developer's engineer that the final lot grading and elevations comply with the requirements of the approved mass grading and the stormwater management plans.

[Ord. No. 501, 8/9/2022]

All installations, locations and materials shall comply with Township, MUTCD and PennDOT standards.

Traffic regulatory signage plan be prepared by qualified professional and contain signage including but not limited to the following:

Traffic signal supports shall be mast arms constructed in accordance with MUTCD PA DOT Pub 148 detail TC-8801 and shall be black powder coated.

Stop signs.

Speed limit signs (25 mph, unless noted).

No outlet signs.

Yield signs.

Weight, size and load restrictions.

Turning restrictions.

Stopping, standing and parking restrictions.

Hazardous grade speed limits.

No-passing zones.

K.

No turns on red restrictions.

L.

Removal of traffic hazards.

M.

School zones and school zone speed limits.

N.

Special speeds on bridges or elevated structures.

O.

Creation of one-way streets.

P.

In development where roadway segments are proposed such that no mid-block signage exists for a distance of 750 feet for greater, the developer shall install a signpost as specified below for the Township's use in installation of temporary signage.

All traffic control signs (other than street names signs) must use the following specifications:

One sign per post, unless otherwise approved by the Township.

Two-inch square powder coated galvanized steel post.

Three-foot counter sink posts.

Break-away hardware.

Theft-proof nuts and bolts.

All traffic control signs must be at least seven feet to the bottom of the sign, and two feet to five feet behind the curb or in accordance with the current MUTCD standards.

Signs, when not at an intersection should be placed between lots, on lot lines.

Arrows indicate flow of traffic.

Street Name Signs.

Developers shall order signage from an approved Township vendor.

The standard North Fayette Township street sign will have the following specifications:

The street name shall appear on street name signs in capital letters six inches high or as required by MUTCD, whichever greater.

Prefixes such as "North" shall be abbreviated to N.

Suffixes such as "Drive" shall be abbreviated to DR.

Prefixes and suffixes shall be four inches high or as required by MUTCD, whichever greater.

Signs shall be mounted on nine-inch-wide extruded aluminum blanks predrilled to accept vandal-proof hardware.

Required length of sign shall be determined by the road name.

Post brackets and cross brackets for mounting the signs must have a twelve-inch-long slot for securing the signs and also be drilled to accept vandal-proof hardware.

The vandal-proof hardware shall consist of bolts with a twelve-part socket head.

Signposts shall be two-inch square powder coated galvanized steel post.

All street signs shall be in accordance with the PA DOT Pub 236.

Location.

All street name signs should be located to share a post with stop signs, where applicable, as shown on Detail RD-30 of the Township Minimum Construction Standards and Standard Details.[1]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

Post must be embedded in 24 inches to 30 inches of concrete and two feet to five feet behind the curbs.

Final Approval.

All identification and traffic warning and regulatory signage must be installed prior to the Township issuing any building permits.

Bonds shall not be released for the streets until all signage installations receive final approval from the Township Engineer.

When all signs have been installed, the developer must request the Township to review the installations.

All developers must purchase and install all signs on their own. The Township will not order, pay for, receive, store, or install any signs, posts, etc., for the developer.

[Ord. No. 501, 8/9/2022]

The Township shall require developers to install lighting along those streets in the development to be dedicated to public use. All street and pedestrian lighting shall be installed in compliance with Township standards for work in Township rights-of-way. (See Details SD-18 through SD-20 of the Township Minimum Construction Standards and Details.[1])

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

The following fixture shall be used for street lighting within the Township:

Cooper Lighting Solutions Streetworks Galleonaire, GAA-AF-08-LED-U-T2R-BK (See Detail SD-18), or approved equal.

The following fixtures shall be used for pedestrian lighting within the Township:

Cooper Lighting Solutions Luxescape LXS Decorative Luminaire, LXS-VA3-LED-740-U-ASC-BK-S (See Detail SD-19), or approved equal.

Payment for the energizing and maintenance of the streetlights shall be the responsibility of the developer and/or the homeowners' or business association. Operation and maintenance plan and agreements should be provided to the Township by the party responsible for lighting.

[Ord. No. 501, 8/9/2022]

Street Tree Planting Specifications. Trees shall be placed spaced every 35 feet on center per side of the roadway with a minimum diameter at breast height (dbh) of two inches at the time of planting. See Detail RD-6 of the Township Minimum Construction Standards and Details.[1] Trees shall be of substantially uniform size and shape and have straight trunks. Trees shall be properly planted and staked, and provisions made by the developer for regular watering and maintenance until the development is complete and Township acceptance of streets. Dead and dying trees shall be replaced by the developer during the next planting season after the initial planting.

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

The following trees shall be used as street trees within the Township or as otherwise permitted by the Township.

For trees in locations where there are no utility lines, i.e., tall trees.

Ginkgo Biloba - Princeton Sentry.

Ostrya virginiana - American Hophornbeam.

Tilia tomentosa - Silver linden.

Ulmus (disease resistant hybrids) Homestead, Pioneer, Urban.

Liquidambar styraciflua - Sweet gum.

Platanus acerfolia - Sycamore.

Nyssa sylvatica - Black gum.

Zelkova Serrata - Zelkova.

For trees in locations with utility lines, i.e., short trees.

Cercis Canadensis - Eastern redbud.

Crataegus crus-galli var 'Inermis" (thornless) hawthorn.

Syringa reticulata "Ivory Silk ' - Tree lilac.

Sorbus americana - American mountain ash.

The following standards shall be used during planting as approved by the Engineer.

(SD-12) Shrub planting detail: See Detail SD-12 of the Township Minimum Construction Standards and Details.[2]

[2]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.

(SD-13) Evergreen/deciduous tree planting detail: See Detail SD-13 of the Township Minimum Construction Standards and Details.[3]

[3]

Editor's Note: The Minimum Construction Standards and Details are included as an attachment to this chapter.