Mechanicals · definition
1960s–70s aluminum branch circuits prone to connection overheating. Requires approved remediation (e.g., COPALUM/AlumiConn) for safety.
Source: InterNACHI — Aluminum Wiring
Where this term lands on a Columbus budget
The cost pages carry the current local ranges, and the guides explain what moves them. A published range becomes a project number only after someone looks at the site.