How to determine the lightning type of high-rise building metal wall

According to the "Lightning in design" (GB50057) Section 2.0.3 and 2.0.4 for determining the high-rise buildings is the second class or third class of lightning buildings or do not consider lightning.

(1) Building protection of the state; and national halls, office buildings, large exhibition and Expo buildings, large railway station, Guesthouse, national archives; large urban water supply pump house and other important particularly important
Buildings; National Computing Center, a national communications hub in the national economy is significant and is equipped with a large number of building electronic equipment belonging to the second category of the lightning buildings.

(2) Department of the provincial office building and other important or crowded public buildings, belonging to the second class of mine buildings when it is expected to be greater than 0.06 times the number of lightning / a; when it is expected to be less than 0.06 times the number of lightning / But when you belong to a greater or equal to 0.012 times / a third class of lightning buildings; class lightning buildings are expected to be less than 0.012 times the number of lightning / a time to consider when lightning.

(3) housing, office buildings and other general civil buildings, when it is expected the number of lightning less than or equal to 0.3 times / a building belonging to the second class of lightning; when it is expected the number of lightning less than or equal to 0.3 times / a but more than 0.06 times / a lightning buildings belong to the third category; expected number of lightning class residential buildings less than 0.06 times the / a time to consider lightning.


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May. 5,2015