Louisiana Administrative Code
Title 43 - NATURAL RESOURCES
Part XXVII - State Lands
Subpart 1 - Land Information Mapping and Map Records System
Chapter 17 - Parcel Mapping
Section XXVII-1709 - Map Sheet Requirements

A. Map Size. The outside edge dimensions of all hard-copy parcel overlay maps shall be 28 inches high by 36 inches long. The neat image area shall be 25 inches high by 25 inches long. All parcel maps will be the same size and layout as the Geographic Base Map Sheets, and shall always bear the same sheet numbers as defined in Chapter 15.

B. Map Scale. Final hard copy parcel maps shall be at a scale of 1" = 50', 1" = 100', 1" = 200', or 1" = 400' based upon respective area classifications as set forth within Chapter 3.

C. Legend and Margin Information. A legend of principal map symbols, north arrow, disclaimer note, map index, bar scale, map number, and chart for record of revisions will appear in the right hand margin of the map sheet. All marginal information will be placed on the parcel map in such a fashion so that when this map is overprinted or layered with its respective base map, all marginal information from both maps will be clearly legible. The map number on the parcel map will be, in all cases, the same as the map number for its respective, or matching, base map.

D. Block Lines and Numbers. On all scales of parcel maps, the neat image area will be subdivided into "map blocks" for the purpose of building the Parcel Identification Number (PIN). The map block will be a 1,000 foot square whose boundaries will conform to the even 1000-foot divisions of the Louisiana State Plane Coordinate System and will be delineated by fine block/grid lines running north-south and east-west across the entire neat image area. A two-digit block number, derived from the PIN system, will be printed in the center of each block using "hollow" numbers. See accompanying §1731, Appendix A, for parcel map layout and block number designations for each respective map scale.

E. Grid Ticks. On parcel maps at a scale of 1" = 50' and 1" = 100', the 25" by 25" neat image area will be further sub-divided with block lines or "grid ticks" (1/2" crosses) placed where theoretical north-south and east-west lines drawn every 5 inches on the image area would run or intersect. Grid ticks will be shown on those points where intersecting block lines do not appear. Grid ticks will appear as block lines on the finished (positive) maps.

F. Adjoining Parishes. Any parish contemplating the development of parcel maps under these standards shall determine if any of its adjoining parishes have already been mapped in conformance with these state standards. If so, the responsible contracting authority for the parish shall obtain digital records of all such existing parcel map sheets adjoining its boundaries for use as source materials. The adjoining parish's map data and the map data at the contracting parish's borders shall be matched to the maximum extent possible, but in no case less than the edge matching accuracy requirements set forth within Chapter 13.