§ 50-97. State plane coordinate system.  


Latest version.
  • Where the plat is located within a U.S. Public Land Survey one-quarter section, the corners of which have been located, monumented and placed on the state plane coordinate system through high order horizontal control surveys conducted to standards established by the southeastern Wisconsin regional planning commission (SEWRPC), the plat shall be tied directly to two adjacent section or quarter-section corners (that is not the center of a section) defining a quarter section line so relocated, monumented and placed on the state plane coordinate system. The grid bearing and distance of such tie shall be determined by field measurements. The state plane coordinates, together with a description of the monuments marking the section or quarter-section corners to which the plat is tied, shall be indicated on the plat. All distances and bearings shall be referenced to the Wisconsin plane coordinate system, south zone, based upon the North American Datum of 1927 and shall be adjusted to the control survey network established to the standards promulgated by SEWRPC for the area concerned.

    Where the field measurements differ from the control survey data by more than one part in 10,000, as an alternative to adjusting the field measured distances and bearings of the ties to the control survey network, the surveyor shall show both the measured field distances and bearings and the recorded and published control survey distances and bearings concerned. Under this alternative, the discrepancies shall be brought to the attention of the custodian of the control survey data for the area concerned by the surveyor.

    All distances shall be recorded to the nearest 0.01 foot and all bearings to the nearest one second of arc. The grid bearing and distance of the tie shall be determined by a closed survey meeting the error of closure herein specified for the survey of the exterior boundaries of the subdivision.

(Ord. No. 802-13, § 1(Att.), 4-22-2013)