spanref.app

spanref.app is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-08-25 and last crawled it on 2026-08-25. It resolves to 104.21.34.195. Its favicon is fingerprinted by SHA-256, so you can find every other site that serves the same icon.

How the site describes itself:

SpanRef - Lumber Span Reference

Published lumber span tables for floor joists, ceiling joists, rafters, and decks - with an instant span lookup, a deck joist and beam calculator, and a reverse sizing tool. Every value cites its source table. Free and private, in your browser.