Monuments and markers shall be placed so that their centers shall coincide exactly with the intersection of the lines to be marked.
(A) Monuments. Monuments shall be set at the following locations:
(1) At the intersections of all lines forming angles in the boundary of a major subdivision;
(2) At the beginning and ending of all curves along street right-of-way lines and at the intersection of street right-of-way lines in major subdivisions; and
(3) Those points falling in paved roadway may be represented by road nails or railroad spikes provided a witness monument is set.
(B) Markers. Markers or monuments shall be set at the following locations.
(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 street right-of-way lines;
(7) At all points described in this section in minor subdivisions; and
(8) Those points falling in paved roadway may be represented by road nails or railroad spikes provided a witness marker is set.
(C) Subdivision benchmarks. One Benchmark shall be set in each major subdivision containing 100 lots or fewer. An 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.
(D) Subdivision benchmark specifications. Each benchmark shall be precast or poured-in-place concrete with a 28-day compressive strength of 4,000 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.
(E) Monument and witness monument specifications. Monuments consist of iron pipes or steel bars at least 36 inches long and five-eighths inch in diameter.
(F) Marker and witness marker specifications. Markers and witness markers shall consist of iron or steel dowels at least 30 inches long and five-eighths inch in diameter (e.g., 5/8” x 30” rebar).
(G) Cap or label. All monuments and markers shall be identified by a cap or permanent label carrying the Surveyor’s registration number.
(Prior Code, § 8-105) (Ord. 1986-7, passed 10-21-1986; Ord. 1988-08, passed 4-25-1988; Ord. 13, 1997, passed 12-1-1997)