URBAN:
• ASCE As-built requirements of positional accuracy level 3 is required for X, Y (Easting, Northing) and a positional accuracy level 4 applies for Z in all Urban boundary designated areas.
RURAL:
• Minimum requirements for Rural designated areas are ASCE positional accuracy of Level 5 for X, Y and Z.
Positional Accuracy Level Positional Accuracy1
(English Units) Positional Accuracy1,2
(SI Units)
1 0.1 feet 25 mm
2 0.2 feet 50 mm
3 0.3 feet 100 mm
4 1 foot 300 mm
5 3 feet 1000 mm
0 Indeterminate
You can locate Urban areas by going to the Urban maps page for Functional Classification Maps)