Monuments and markers shall be placed so that the center of the bar or marked point shall coincide exactly with the intersection of lines to be marked and shall be set so that the top of the monument or market is level with the finished grade.
(A) Monuments shall be set:
(1) At the intersection of all lines forming angles in the boundary of the subdivision;
(2) At the beginning and ending of all curves along street right-of-way lines;
(3) At the intersection of street right-of-way lines; and
(4) Those points falling in a paved roadway may be represented by road nails or railroad spikes provided a witness monument is set.
(B) Markers shall be set:
(1) At the intersection of street right-of way lines;
(2) At all section corners;
(3) At all points where lot lines intersect curved property lines, either front or rear;
(4) At all angles in property lines of lots;
(5) At all lot corners not otherwise described herein;
(6) At the beginning and ending of all curves along right-of-way lines; and
(7) Those points falling in paved roadway may be represented by road nails or railroad spikes provided a witness market is set.
(C) Monuments shall be of stone or concrete (which may be poured in place), with minimum dimensions of four inches by four inches by 30 inches, set vertically in place. They shall be marked on top with a brass plug, or iron or copper dowel, at least three-eights inch thick, set flush with the top of the monument, deeply scored on top, with a cross. Markets shall consist of iron pipes or steel bars at least 24 inches long, and not less than five-eights inch in diameter, and shall be identified by a cap or permanent label carrying the surveyor’s registration number.
(D) One benchmark shall be set in each major subdivision containing 100 lots or fewer. One additional benchmark shall be set for each additional 100 lots or fraction thereof. The locations of benchmarks shall be approved by the County Surveyor.
(1) The applicant’s land surveyor shall establish subdivision benchmark elevations by a closed level circuit from the nearest U.S.G.S. benchmark.
(2) Each subdivision benchmark shall be installed behind the curb line at an intersection so that the top of the benchmark is level with the top of the curb, unless otherwise permitted by the County Surveyor.
(3) Each benchmark shall be precast or poured-in-place concrete with a 28-day compressive strength of 4000 psi and 6% air entrainment. Benchmarks shall be at least 12 inches square by 36 inches deep and shall be marked on top with a three-inch diameter curved-head brass marker set flush with the top of the concrete.
(Ord. passed 6-5-1991)