GB/T 20257.1-2017
ActiveCartographic symbols for national fundamental scale maps—Part 1:Specifications for cartographic symbols 1︰500 1︰1 000 & 1︰2 000 topographic maps
国家基本比例尺地图图式 第1部分：1:500 1:1 000 1:2 000地形图图式
Application Summary AI generated
This standard specifies the cartographic symbols, colors, and patterns used for representing geographic features on 1:500, 1:1,000, and 1:2,000 scale topographic maps. It is applied in surveying, urban planning, land management, and engineering design to ensure consistent and unambiguous map reading across China. The standard is mandatory for producing official large-scale topographic maps used in construction, cadastral mapping, and infrastructure projects.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.