GB/T 33180-2016 in English
VALIDNational fundamental scale maps―1∶25 000 1∶50 000 1∶100 000 topographic maps
- Issued on:2016-10-13
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 33180-2016国家基本比例尺地图 1:25 000 1:50 000 1:100 000地形图》由TC230（全国地理信息标准化技术委员会）归口，主管部门为自然资源部(测绘地理)。
Introduction
1. Background and significance of standard formulation
GB/T33180-2016 "National Basic Scale Maps 1:25000, 1:50000, 1:100000 Topographic Maps" is an important specification in the field of surveying and mapping geographic information in my country, aiming to unify and standardize the production, quality control and application of topographic maps of different scales. This standard is based on modern surveying and mapping technology and geographic information technology, combined with actual conditions, and provides an important basis for the construction of national basic geographic information.
2. Comparison of standard frameworks
| Standard dimensions | 1:25000 | 1:50000 | 1:100000 |
|---|---|---|---|
| Basic contour interval (m) | 5 (2.5) | 10 (5) | 20 (10) |
| Plane accuracy mean error (m) | 1.2 | 2.5 | 5.0 |
| Meanwhile error of elevation accuracy (m) | 1.2 | 2.5 | 5.0 |
3. Suggestions for standard implementation
3.1 Data production and quality management
- Strictly collect and process data in accordance with the scale and mathematical basis requirements in the standard.
- Establish a complete quality inspection system to ensure that the plane accuracy and elevation accuracy of topographic maps meet the requirements.
3.2 Suggestions for digital transformation
- Promote the transformation from paper topographic maps to digital topographic maps to improve surveying and mapping efficiency.
- Use modern geographic information system (GIS) technology to achieve dynamic update and management of data.
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