Learn how to space your deck joists using these tables according to the latest building codes.

Use our calculator above to determine the proper joist span for your deck based on the type of wood or materials used, joist size, and spacing. Learn how to install and space deck joists for composite decking with step-by-step instructions. Explore the endless design possibilities of building a round or curved deck.

2024年12月19日 · Deck joists have different maximum span lengths depending upon the size, spacing, and framing material that you're creating your deck with. Here's a helpful chart covering the most popular wood framing species and their maximum allowed spans:

The joist and beam span values in Tables 6-4 and 6-5 assume outdoor, po-tentially wet conditions and include wood species such as redwood, west-ern cedars, ponderosa pine and red pine that are commonly used in deck construction. Minimum bearing lengths match those for interior floor joists and beams: 1½ inches on wood or metal and 3 inches on ...

Use Table 2 to determine allowable joist span, LJ, based on lumber size and joist spacing. Joist span, L, must be less than or equal to allowable joist span, LJ. Overhang length is the lesser of allowable overhang, LO, or one fourth the joist span, L/4. …

Span charts for deck joists and beams in a variety of framing materials, including wood and steel.

Determine the decking board thickness and direction to determine joist spacing. (Table 1:1) Decide whether the joists will cantilever over or not. Then using the lumber size of joists and the joist spacing, determine if you are within the maximum allowable joist span. (Table 1:2 or Table 1:3) Using the beam span table, select your beam lumber size.

2005年1月3日 · Size your deck beams and headers with our easy-to-use span table, which allows you to cross reference the post spacing and joist length to determine the right deck beam size. Try it out at Decks.com.

The intent of this document is to provide guidance on joist spans, built-up beam sizes, and supporting column sizes for exterior wood decks. The following items which are typically included in an exterior wood deck are not addressed and

Framing tables for decks: joist & beam spans & sizes. Recommended or allowable joist & beam spans: this article explains typical spans for deck joists, deck beams, and deck flooring, giving both standard span tables and a quick "rule of thumb" that works pretty well.