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Lightning Protection
- The lightning protection / earthing system must consist of a Faraday cage system to AS requirements with:
- Air terminals (lightning rods or tinned copper tape mounted on the parapet) installed at the highest parts of the building connected together and taken down through the building to an earth point in the ground.
- Down conductors (generally being perimeter columns) which:
- Include either steel reinforcing bars that are a continuous length with two (2) welded bars per column or Dedicated cables.
- Have been tested for continuity by the electrical contractor as the structure progresses and prior to completion.
- Have earthing points that are in an accessible location.
- Connection to all metal equipment or materials (mechanical plant, aerials, etc on the roof) can be by tinned copper strap linking to the remainder of the lightening arresting system and linking to the down conductors.
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