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Anonymous users2024-01-24The guardrail that needs to be grounded should be connected with the lightning protection device according to the design requirements, and the grounding connection point should be increased every 30m of extension. The guardrail and the lightning protection device should be connected reliably, and its transition resistance should not be greater than.
When the guardrail needs to be grounded, the grounding embedded parts or the connecting wire of round steel or flat steel with a length of not less than 200mm should be set aside during the construction of the down lead wire or equalizing ring. The connecting conductor between the guardrail and the reserved grounding terminal should be made of round steel or flat steel, and the round steel should be preferred, the diameter of the round steel should not be less than 10, the cross-section of the flat steel should not be less than 80mm2, and the thickness should not be less than 4mm.
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Anonymous users2024-01-231. If you do it, you can directly draw out a round steel from the ring beam of the building and connect it with the metal railing through the clamp, and start to do it at 60M for the third class, and 30M for the second class 45M and the first class (3 days ago).
2. The railings on the outer wall of 45m and above should be placed. Railings on the exterior wall of 60m and above should be placed. 3. When the height of the building exceeds 60m, large metal objects such as doors and windows are directly or connected to the lightning protection device through embedded parts.
The building is considered as a Class II lightning protection building.
3. When the height of the building exceeds 45m, the following anti-side measures should be taken:
4. Large metal objects such as doors and windows are connected to lightning protection devices directly or through embedded parts.
1. In the case of a beam.
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