Prior to the approval of the final plat, the following survey reference markers shall be installed.
(A) Permanent concrete monuments. Permanent concrete monuments four inches in diameter or square, three feet long, shall be placed at not less than two corners of the subdivision and at all corners of all intersections, provided that additional monuments shall be placed where necessary so that no point within the subdivision lies more than 500 feet from a monument. Two or more of the required monuments shall be designated as control corners. The top of each monument shall have an indented cross, metal pin or metal plate to identify properly the location of the point. All monuments shall be shown on the final plat.
(B) Markers. All lot corners, all points where the street lines intersect the exterior boundaries of the subdivision and all angle points and points of curve in each street shall be marked with iron pipe either three-fourths inch or one inch in diameter, and 30 inches long, driven so as to be within one inch of finished grade.
(C) Property corner tie. At least one corner of the property surveyed shall be designated by course and distance (tie) from a readily discernible reference marker. If a corner is within 2,000 feet of a U.S. Coast and Geodetic Station or North Carolina Grid System coordinated monument, then this corner shall be marked with a monument so designated and shall be accurately tied to this station or monument by computed “x” and “y” coordinates which shall appear on the map with a statement identifying this station or monument and to an accuracy of one to 5,000. When a monument or station is not available, the tie shall be made to some pertinent and readily recognized landmark or identifiable point, physical object or structure.
(D) Accuracy. The angular error of closure shall not exceed 25 seconds times the square root of the number of angles turned. The linear error of closure shall not exceed one foot per 10,000 feet of perimeter of the lot or tract of land. The accuracy of the survey shall be designated on the plat.
(2009 Code, § 154.52) (Ord. passed 5-1-1972; Ord. passed 9-12-1995) Penalty, see § 10.99