Exterior · definition
The limited allowable overhang of joists past the beam (and beam past posts). Code caps it as a fraction of the backspan.
Source: Decks.com — Deck Joist Cantilever Rules and Limits
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.