La. Admin. Code tit. 43 § XXVII-519
Current through Register Vol. 50, No. 12, December 20, 2024
Section XXVII-519 - Survey RecordsA. Field Notebooks. Field notebooks shall be carefully and neatly prepared, identified, indexed and preserved. All data regarding the establishment and extension of horizontal and vertical control, including descriptions of all established and recovered monuments, shall be recorded. Where existing control monuments are recovered in extending the basic control, the field notebooks shall contain the following:1. recovery descriptions of all monuments recovered. Descriptions will be prepared on the Report on Condition of Survey Mark Form included under §525, Appendix C;2. exact letter and numbers stamped (not cast in) on the mark and amended description, if applicable;3. additional reference tie data, if any;4. a sketch of the location of the monument as appropriate to facilitate future recovery. The field notebooks shall contain the name and address of the party chief, the identity of the survey instruments or equipment, and the latest calibration dates of all instruments and equipment. Each field notebook shall be numbered and marked with a brief description of the contents on the cover, shall be carefully indexed, and shall have all pages numbered. Each horizontal baseline loop and vertical control line shall be identified by number and brief description in the field book. The first page used on each day of fieldwork shall be dated. Upon completion of the project, all field books shall be delivered to the responsible contracting authority.B. Control Data. The following information shall be furnished on all new permanent control monuments and/or temporary photogrammetric control points established:1. information required on control points established to be furnished on control data description forms as shown in §527, Appendix D;2. designation of control point (parish name and sequential identification number);3. name of party responsible for establishing control point;4. date of establishment:a. horizontal and/or vertical control data;b. complete description of the nature and location of the point to include a "to reach" description referenced to nearby landmarks and identified by field survey ties to three or more definable photo image points or established reference points in the immediate vicinity.C. Computations. All computations and adjustments of control data shall be referenced to the field notebooks by book and page number. Following completion of computations and adjustments, a copy of the following data shall be submitted to the responsible contracting authority for all horizontal and vertical control established: 1. individual horizontal baseline loop sketches showing designation of monuments or control points established, designation of existing published monuments and azimuth marks occupied, recorded and reduced average distances and angles measured, error of closure tolerances, astronomic observation measurements and computations, and related information;2. horizontal baseline loop adjustment computations showing both unadjusted and adjusted bearings, distances and coordinate positions of control points established, sea level and scale factor corrections applied in conformance with Louisiana conformal conic projection requirements, unadjusted coordinate positions of all existing published control monuments and azimuth marks, and designation of both constrained and check verification monuments used in adjustment;3. individual vertical level loop sketches showing designation of control points established, designation of existing published benchmarks occupied, error of closure tolerances, level line loop adjustment computations showing both unadjusted and adjusted elevations, unadjusted elevations of all existing published benchmarks, and designation of both constrained and check verification benchmarks used in adjustment;4. summarized tabulation of all adjusted horizontal control monument and photogrammetric target coordinate locations reduced to the nearest 0.01 feet and 0.001 meters (northing and easting) based on the Louisiana State Plane Coordinate System (north or south zone, as applicable);5. summarized tabulation of all established vertical control elevations reduced to the nearest 0.01 feet and 0.001 meters.D. Control Diagram. The surveyor shall furnish with the survey records a schematic control diagram prepared on USGS Topographic Quadrangle Map Sheets, 7.5 Minute Series, showing all basic horizontal and vertical control established. This diagram shall show all existing and established control points properly identified in their approximate location, including all primary survey baselines and their connections to existing and established control point locations.La. Admin. Code tit. 43, § XXVII-519
Promulgated by the Office of the Governor, Division of Administration, State Land Office, LR 17:968 (October 1991).AUTHORITY NOTE: Promulgated in accordance with R.S. 50:171.