[Ord. No. 10-2018, 19, passed 3-5-2019]
(a) 
Concrete curb shall be seven inches wide at the top, and tapered out one inch along the face of curb to a width of eight inches at the bottom face of curb, which shall be eight inches below the top of curb. The curb shall extend vertically another 10 inches below the face of curb to an eight-inch-wide base. Curbs shall be poured in sections not more than 20 feet long nor less than four feet long, and a 1/2-inch premolded rubber expansion joint shall be placed between each section.
(b) 
Eight-inch curb reveal is required for new construction. Where existing curb is to be replaced along existing streets, match adjacent curb reveal height if eight inches of reveal cannot be achieved. In no case shall curb reveal be less than six inches. As directed by the Engineer, the curb reveal height may need to transition in order to match the adjacent existing curb.
(c) 
Street curb intersections shall be rounded with a minimum radius as directed by the Engineer. Curb radii are typically 20 feet for local streets and 30 feet for collector or major streets. The radius point shall be concentric with that for the property line. Under no circumstances shall such return be depressed to form a driveway. The permittee shall consult the Engineer concerning the location of required curb ramps.
[Ord. No. 10-2018, 19, passed 3-5-2019]
The distance from top of curb to center of operating nut on the pumper connection shall be not less than 12 inches. Where the grade is such that this clearance cannot be obtained, a circular depression shall be placed for the full width of the curb so as to allow the necessary space. Circular depressions must be approved by the Engineer prior to installation.
[Ord. No. 10-2018, 19, passed 3-5-2019]
The reveal at curb depressions shall be between zero and 1 1/2 inches above the street surface for drive aprons. For driveway aprons to public garages, gas stations, and places of business, the length of this depressed curb shall not exceed 40 feet without a safety island. This safety island shall not be less than 15 feet in length as measured along the pedestrian line of travel. For all other driveways, the length of depressed curb shall not exceed 25 feet. Pipes, grates or other bridging shall not be placed in the gutter to form a driveway. The slope of the ramp between the depressed curb and the regular curb shall be no more than 1:10 for pedestrian safety and ADA compliance. No curb returns are permitted within sidewalks at driveways. Straight depressed curb shall extend across all driveways. Exceptions for industrial areas and landscaping strips shall be made at the discretion of the Engineer.
[Ord. No. 10-2018, 19, passed 3-5-2019]
The permittee shall mark the proposed excavation area and call PA One-Call a minimum of three days prior to digging. The permittee shall cleanly cut the existing pavement straight and parallel to the proposed curb at a maximum distance of 24 inches from the proposed face of curb prior to the removal of the existing curb.
[Ord. No. 10-2018, 19, passed 3-5-2019]
Excavations shall be made to the required curb depth. Concrete curbs shall be placed on a thoroughly compacted base of PennDOT No. 2B stone (AASHTO No. 5) to a depth not less than four inches.
[Ord. No. 10-2018, 19, passed 3-5-2019]
(a) 
Forms shall be made of steel and shall be warp-free. Forms shall be braced so that a smooth surface and straight line will be secured. A front and back form shall be used except where a good concrete sidewalk, which is not to be removed, abuts the new curb. Forms shall be accurately set to line and grade in such a manner as to prevent settlement or displacement. Wood forms shall only be used upon approval by the Engineer.
(b) 
In all instances, a full depth curb form is required on the face of the curb unless otherwise approved by the Engineer. The paving and/or road subbase must not be used as a form. The sidewalk side curb form shall be set in a vertical position. Details of forms inconsistent with the dimensions herein included shall be submitted to the Engineer for his approval prior to use.
(c) 
Concrete shall not be placed until forms and other work have been inspected and approved. The bottoms of excavations shall be properly leveled, tamped and free from frost. Wood forms shall be wetted prior to placing concrete.
[Ord. No. 10-2018, 19, passed 3-5-2019]
(a) 
Forms shall not be removed within 24 hours after the concrete has been placed or until such a time as it will not be detrimental to the concrete as directed by the Engineer. Minor defects shall be filled with mortar composed of one part portland cement and two parts fine aggregate, which shall be applied with a wooden float.
(b) 
The top and face of the curb, from the top to 10 inches below, shall be finished while the concrete is still green by wetting a carborundum stone, soft brick or wood block and rubbing the surface until it is smooth. After the concrete has been rubbed smooth, it shall be rubbed again until a uniform color is produced using a thin grout composed of one part sand and one part portland cement.
(c) 
All joints in the curb shall be promptly opened from top to bottom immediately after the forms are removed, and edges adjacent to the joints shall be sharp and clean cut.
(d) 
Brush finishing or plastering will not be permitted. The use of a magnesium hand float for finishing the top of freshly poured curbs is permitted without the need for additional rubbing.
[Ord. No. 10-2018, 19, passed 3-5-2019]
(a) 
After the concrete has hardened sufficiently, spaces adjacent to the curb on the sidewalk side shall be refilled with coarse aggregate in layers of not more than four inches in depth. Each layer shall be thoroughly compacted to the required elevation.
(b) 
For curbs along bituminous paved streets, the permittee shall place 2A stone on the street side of the curb, compacted in four-inch layers using a wacker or ground pounder. Pavement restoration shall be constructed as shown on the Typical Pavement Restoration Detail in Appendix A. All joints between existing and proposed paving shall be sealed with PG 64-22.
(c) 
For curbs along concrete base streets, the permittee shall place coarse aggregate on the street side of the curb in four-inch thoroughly compacted layers up to the lower limit of the existing adjacent concrete street base. Then the permittee shall place the concrete base within the confines of the excavation equal in depth to the existing street base.
[Ord. No. 10-2018, 19, passed 3-5-2019]
(a) 
Concrete work shall be protected from rainstorms with Sisalkraft® paper or plastic for a period of not less than 24 hours. The permittee shall cure concrete with white polyethylene sheeting, white polyethylene sheeting - burlap-backed, white polyethylene sheeting - polypropylene fiber backed, or burlap in accordance with PennDOT's Publication 408, Specifications (latest revision), Section 501. Curing materials shall remain in place and be maintained as specified for a period of 96 hours. An alternate method of curing using curing compound is permitted only if the compound meets AASHTO-M148, Type 2 or Type 1, as approved by the Engineer. Use of wax compound is not permitted.
(b) 
Within the period of 24 hours after the date of concrete placing, the permittee shall prepare all finished surfaces, regardless of curing method, for protective coating by removing all surface dirt, debris, oil, grease and foreign matter. When all surfaces are clean and dry, the permittee shall apply two coats of protective coatings consisting of Kure-N-Seal™ WB, or approved equal. The protective coating shall be applied at the rate of 0.02 gallon per square yard for each coat by use of approved mechanical pressure spray equipment, portable hand spray equipment, brushing, or a combination of these methods.
(c) 
No protective coating shall be applied when the air or concrete surface temperature is below 35° F. or above 100° F. or during wet weather. The first coat shall be permitted to dry at least 24 hours before the second coat is applied. The second coat shall be allowed to dry at least six hours or until the surface is no longer tacky. The permittee shall be responsible for not allowing pedestrian traffic to use the concrete surfaces during application and drying periods.