237 
high percentage of questionable or anomalous constraints 
produced some section corner positions which exceeded the 
position tolerance when field checked against local 
planimetry, also a predictable outcome when internal incon 
sistencies were encountered in plat data. In contrast, 
those townships computed from constraints of unquestionable 
accuracy and optimum geometrical spacing, in conjunction 
with mathematically consistant plat data, achieved final 
map separate status, as field checks confirmed positional 
accuracy relative to adjacent map features. 
Proposed Procedures 
The determination of courses or legs of the multiple tra 
verses among the points that represent the section and 
quarter-section corners in the township will be based on 
spatial relationships of the annotated survey plat. Points 
representing corners with coordinated values derived from 
triangulation, trilatération, or other accepted positioning 
methods will be designated as constraints. Multiple trav 
erses will then be designed to include all remaining uncon 
trolled corners. As an example (see figure 2), if nodes 
number 3 and 16 are designated constraints, because of 
their known geodetic horizontal positions, then a possible 
traverse could be designed to establish coordinate values 
for nodes 4, 8, and 12, by starting at node 3, proceeding 
through courses 3-4, 4-8, 8-12, and 12-16, and closing on 
node 16. The numbering system used to identify the nodes 
(corner positions) will be based on the project unit, 
rather than the individual township units, to avoid dupli 
cation of numbers in later operations. 
Figure 2. Traverse Design Configuration.