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GB/T 12898-2009 Active
GB/T 12898-2009 Specifications for the third and fourth order leveling
Abstract
This standard specifies the principles of establishing third- and fourth-order leveling networks, the methods of surveying, accuracy indicators, and technical requirements.
This standard is applicable to the layout and surveying of third- and fourth-order leveling networks.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 12898-2009 |
| CCS | Geodetic and oceanographic mapping |
| ICS | Astronomy, geodesy, and geography |
| Implement Date | 2009-10-01 |
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$ 155