[Adopted 8-24-1943 by Ord. No. 88]
This Article shall be known and may be cited as "Standard Road Sections and Private Drive Entrances" within the Township of Patterson, Beaver County, Pennsylvania.
The following regulations and conditions under which piped underdrains may be placed across private driveway entrances leading from public streets within the Township, and as shown on the map dated June 30, 1943, prepared by Michael Baker, Jr., Township Engineer, are hereby adopted, as follows:
A. 
On all streets designated as being 40 feet or less in width, the following regulations will exist:
(1) 
The minimum distance from the center line of the road to the center line of the pipe shall be 12 feet.
(2) 
The minimum distance from the center line of the road to the top of the ditch shall be 10 feet.
(3) 
The elevation at the top of the ditch, 10 feet from the center line of the road, shall be not less than five inches below the grade of the center line opposite.
B. 
On all streets designated as being 50 feet or more in width, the following regulations will exist:
(1) 
The minimum distance from the center line of the road to the center line of the pipe shall be 15 feet.
(2) 
The minimum distance from the center line of the road to the top of the ditch shall be 13 feet.
(3) 
The elevation at the top of the ditch, 13 feet from the center line of the road, shall be not less than seven and three-eighths (7 3/8) inches below the grade of the center line opposite.
C. 
On all streets, irrespective of designated widths, the following regulations will exist:
(1) 
The minimum size of pipe allowable for use as underdrains shall be 12 inches in diameter.
(2) 
Should pipe larger than 12 inches in diameter be used, the minimum distance from the center line of the road to the center line of the pipe will be determined by the depth at which the flow line of the pipe is placed below the elevation of the top of the ditch. A minimum slope of one and one-half to one (1 1/2:1) must be maintained from the top of the ditch to the flow line.
(3) 
The crown of the paved area of all streets is to conform to a parabola with a grade of three-eighths (3/8) inch per foot drop from the center line to the edge of the paving.
(4) 
The slope of the berm or shoulder of the roadway is to drop one inch per foot from the edge of the paving to the outside edge of the berm.
(5) 
The elevation of the flow line of a twelve-inch-diameter pipe shall be not less than one foot six inches below the elevation of the top of the ditch adjacent to the inlet of the pipe.
If, in the opinion of the Board of Township Commissioners of the Township of Patterson, Beaver County, Pennsylvania, pipe underdrains now in existence are not in conformity with the requirements of this article, the Township Commissioners may remove such pipe underdrains, at the expense of the Township, and the pipe so removed shall be returned to the owner, who shall thereupon construct the same in accordance with the provisions of this article.
The aforesaid map and accompanying data shown thereon, dated June 30, 1943, is hereby adopted by the Township Commissioners, and a copy thereof shall be kept on file in the office of the Township Secretary.