Exterior · definition
The repetitive members spanning ledger to beam that the decking fastens to. Spacing (12–16 in.) depends on decking type and direction.
Source: Decks.com — Deck Joist Sizing & Spacing
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.