Missouri Code of State Regulations
Title 20 - DEPARTMENT OF COMMERCE AND INSURANCE
Division 2030 - Missouri Board for Architects, Professional Engineers, Professional Land Surveyors, and Professional Landscape Architects
Chapter 20 - Mapping Survey Standards
Section 20 CSR 2030-20.020 - Map Accuracy Standards
Universal Citation: 20 MO Code of State Regs 2030-20.020
Current through Register Vol. 49, No. 18, September 16, 2024
PURPOSE: This rule prescribes minimum acceptable mapping standards.
(1) Horizontal Accuracy.
(A) Class I. The root
mean square (rms) error of a map product shall be less than 0.01 of one inch
(1") on the map or in the case of a metric map, 0.025 of one centimeter (1 cm)
on the map.
EXAMPLE (Customary Units)
| Scale | Limiting rms Value in Feet |
| 1" = 20' | 0.2' |
| 1" = 50' | 0.5' |
| 1" = 100' | 1.0' |
| 1" = 200' | 2.0' |
| 1" = 400' | 4.0' |
| 1" = 1000' | 10.0' |
| 1" = 2000' | 20.0' |
EXAMPLE (SI Units)
| Scale | Limiting rms Value in Meters |
| 1 cm = 5m | 0.125 |
| 1 cm = 10m | 0.250 |
| 1 cm = 100m | 2.50 |
| 1 cm = 200m | 5.00 |
(B)
Class II. The rms shall be twice that required for Class I.
(C) Class III. The rms shall be three (3)
times that required for Class I.
(2) Vertical Accuracy.
(A) Class I. For Class I maps rms error in
elevation shall be less than one-third (1/3) of the indicated contour interval
for well-defined points only, and one-sixth (1/6) of the contour interval for
spot heights.
(B) Class II. The rms
error may be twice that required for Class I.
(C) Class III. The rms error may be three (3)
times that required for Class I.
(3) Mixed Accuracy. A map may be compiled that complies with one (1) class of accuracy in elevation and another in planimetry.
*Original authority: 327.041, RSMo 1969, amended 1981, 1986, 1989, 1993, 1995, 1999.
Disclaimer: These regulations may not be the most recent version. Missouri may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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