Monuments and markers shall be placed so that their centers shall coincide exactly with the intersection of lines to be marked.
A. Monuments. Monuments shall be set at the following conditions:
1. At the intersection 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.
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 may 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.
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 may 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 location of benchmarks may be approved by the appropriate authority.
1. The applicant's land surveyor shall establish subdivision benchmark elevations by a closed level circuit from the nearest United States Geodetic Survey (USGS) 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 appropriate authority.
D. Subdivision benchmark specifications. Each benchmark shall be pre-cast or poured-in-place concrete with a 28-day compressive strength of 4,000 psi and a 6% air entrapment. Benchmarks shall be at least 12 inches square by 36 inches deep and shall be marked on top with a 3-inch diameter curvedhead brass marker set flush with the top of the concrete.
E. Witness monument and marker specifications. Monuments shall be pre-cast concrete or concrete poured-in-place with minimum dimensions of four inches by 30 inches containing an iron or steel dowel at least 20 inches long and 5/8-inch in diameter set flush with the top of the monument, or a 5/8-inch x 30-inch rebar.
F. Surveyor's registration number. All monuments and markers shall be identified by cap or permanent label carrying the surveyor's registration number.
(1980 Code, Ch. 154, § 2.04) (Ord. 2001-4, passed 3-27-2001)