Accuracy Specifications for Topographic Surveys

Accuracy Specifications for Topographic Surveys

• More than one standards: national map accuracy standards (NMAS), ASPRS, American Society of Civil Engineers (ASCE)
• Maximum permitted errors are related to map scale. The smaller the scale the bigger the allowed error.
• Example: not more than 10% of tested points shall be in error in horizontal position by more than 1/30 inch, what about a map 1 in: 100 ft

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