Comprehensive grounding and lightning protection system plan for a 5-level commercial building (basement, ground floor, 1st, 2nd, and roof levels). This drawing details the foundation grounding system using 30×3.5mm hot-dip galvanized strips embedded in reinforced concrete with connection points to structural rebar. Lightning protection consists of SE-06 type air terminals (L=20m) mounted on 4m masts providing 36m radius protection zones. The system features 2x50mm² copper conductors as down conductors with test points and connections to foundation electrodes. Key components include equipotential bonding bars, copper ground rods (Ø20mm, 1m length), and connection details to building electrical systems including main distribution panel (ADP), floor distribution panels, and elevator panel. The design specifies a grounding resistance requirement of R<2 ohm with provisions for additional electrodes if needed. Technical notes indicate soil resistivity assumptions (100 ohm-m) with verification testing required before final implementation.
Multi-Floor Building Grounding and Lightning Protection Plan
