GB 50057-2010 第3.0.3条
| | In areas where lightning strikes to ground may occur, a building shall be classified as a Class II lightning protection building when any of the following conditions applies:<br>• National-level key cultural relic protection buildings;<br>• Particularly important buildings such as national-level assembly halls, office buildings, large exhibition and exposition buildings, large railway stations, state guesthouses, national-level archives, and important water supply pump houses for large cities;<br>• Buildings of significant importance to the national economy, such as national-level computing centres and international communication hubs;<br>• National special-class and first-class large gymnasiums;<br>• Ministerial- and provincial-level office buildings and other important or densely occupied public buildings with an expected lightning strike frequency greater than 0.05 times/a (Note: hotels are generally densely occupied public buildings; if the expected lightning strike frequency is >0.05 times/a, they are classified as Class II);<br>• General civil buildings such as residences and office buildings with an expected lightning strike frequency greater than 0.25 times/a (Note: if a hotel is considered a general civil building, this criterion must be met). |