Delaware Administrative Code
Title 24 - Regulated Professions and Occupations
Department of State
Division of Professional Regulation
2700 - Board of Registration for Professional Land Surveyors
Attachment A
Universal Citation: 24 DE Admin Code A
Current through Register Vol. 28, No. 3, September 1, 2024
| CONDITION | MARSH | RURAL | SUBURBAN | URBAN | REMARKS AND FORMULA |
| Unadjusted closure (minimum) | 1: 5,000 | 1:7,500 | 1:10,000 | 1:15,000 | Loop or between monuments |
| Angular closure (minimum) | 30" N | 20" N | 15" N | 10" N | N = number of angles in traverse |
| Accuracy of distances | 0.10 ft + 200 ppm | 0.07 ft + 150 ppm | 0.05 ft + 100 ppm | 0.03 ft + 50 ppm | 100 ppm = 1:10,000 |
| Elevations for boundaries controlled by tides, contours, etc. accurate to: | + or -.50 ft | + or -.50 ft | + or -.50 ft | + or -.50 ft | Based on NGVD (1929) or NAVD 88 |
| Location of subject property or pertinent improvements, structures, paving, etc. | + or - 2 ft | + or - 1 ft | + or - 0.1 ft | + or - .10 ft | Any shown improvement within 75 feet of property must use these tolerances |
| Positional error in map plotting not to exceed: (applies to original map only) | 1/10 | 1/20 | 1/20 | 1/40 | National Map accuracy calls for 1/.50th inch |
| Area | 0.1 acre | 0.1 acre | 0.001 acre | + or - nearest square foot = less than 1 acre; 0.0001 = greater than 1 acre | Areas involving water boundary, Left to discretion of practitioner |
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