Firewall Fireyness Calculator

A small construction-industry utility for calculating the fire-resistance rating ("the fireyness") of a building firewall. Born out of doing the same back-of-envelope calc with a coffee-stained spreadsheet one too many times — now a clean web tool that anyone on site can pull up on their phone.

TypeScript + React on Next.js, deployed on Vercel. Single page, no login, paste in the numbers and get an answer.