Exterior · definition
Brackets/bolts tying rail posts into the deck frame to meet the code load (200 lb at the top rail). Surface-screwed posts fail this.
Source: Simpson Strong-Tie — Deck Connection and Fastening Guide
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.