GB 50057-2010 第4.3.7条
| **** | **When round steel is used for down conductors, the diameter shall not be less than 8 mm; when flat steel is used, the cross-section shall not be less than 48 mm² and the thickness shall not be less than 4 mm.** |
GB 50057-2010 第4.3.7条 Code for Design Protection of Structures Against Lightning
Other clauses of this standard
- GB 50057-2010 第1.0.1条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第1.0.2条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第1.0.3条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第1.0.4条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第1.0.5条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第1.0.6条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第第4.2.1条条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第第4.2.1条条Code for Design of Lightning Protection of Buildings
- GB 50057-2010 第第5.2.1条条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第2.0.1条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第2.0.2条Code for Design Protection of Structures Against Lightning
- GB 50057-2010 第2.0.3条Code for Design Protection of Structures Against Lightning
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