Every rack of IT you deploy drags a shadow of mechanical and electrical plant behind it — CRAHs, CDUs, chillers, UPS, generators, switchgear. Model your facility as mixed rack groups — air-cooled, rear-door, direct liquid, immersion, side by side — and this tool checks each group against its air-cooling power limits, then sizes the combined greyspace: cooling plant, electrical chain, floor area, and power overhead.