16.32.290 Permanent monuments.
A. Permanent monuments shall be set at all angle and curve points on the exterior boundaries of the subdivision, in all street intersections, at all angle points of street lines and at all curve points, both simple and compound, of street lines. Monuments in street intersections and at right and curve points of street lines shall be set on street centerlines, unless otherwise directed by the city engineer; provided, however, that such permanent monuments need not be set at angle and curve points on the exterior boundaries of the subdivision, when such points are distant four hundred feet or less from another such permanent monument; such distance for four hundred feet or less to be measured along the exterior boundary.
B. Permanent monuments set in streets shall be not less substantial than a rich portland cement concrete post six inches in diameter by twenty-four inches tall, with a brass disk embedded in the top and marked by the surveyor in accordance with state law. A magnetic or ferrous object shall be placed in or below the concrete to aid detection. The top of the monument shall be located at least sixteen inches below finished street grade. Access shall be provided by a precast concrete box with cast iron frame and lid; the box shall not rest on the monument or be set in such a manner as to transmit wheel loads to the monument.
1. Permanent monuments outside of streets on Subdivision Boundary shall not be less substantial than a six-inch diameter concrete post with a No. 4 rebar embedded in the center portion, and marked by the surveyor in accordance with state law. The post shall extend to not less than thirty inches below grade or twelve inches below the lower limits of any soft clay topsoil, whichever is deeper.
C. The engineer or surveyor shall also set at all lot comers and at all curve points on lot boundary lines a marker not less substantial and enduring than a steel pin five-eighths of an inch in diameter by eighteen inches long with a noncorroding metal surface approximately one inch in diameter on the head thereof driven flush with the existing ground surface and marked at the exact point.
D. Whenever lot comers are adjacent to existing concrete sidewalks or sidewalks to be constructed as part of the improvements, permanent metal markers set in the sidewalk on lot lines in a manner acceptable to the city engineer may be installed in lieu of steel pins on the front lot comers. (Ord. 90-1 (part), 1990)