The span of a 2x6 deck joist depends on your deck joist spacing and material. For instance, a 2x6 redwood or cedar joist can span eight feet at a spacing of 16 inches. On the other hand, a 2x6, 16- or 18-gauge steel joist can span 16 feet, 4 inches if the spacing is 12 inches.
A Work in Progress. The 2015 IRC simplified sizing deck beams with the introduction of Table R507.6 “Deck Beam Span Length.” That table presented the maximum spans for a series of multi-ply, built-up-dimensional-lumber beams from a double 2x6 through a triple 2x12, with beam spans based on the span of the deck joists from the ledger to the beam.
Deck Beam Span & Footing Size Calculator in 2025 Deck beams and joists go hand-in-hand as the framing materials for your deck. While joists provide a horizontal support system for deck boards, beams provide support for the joists. Your beams will need to bear the load of not only your decking materials, but additional components of the frame ...
The standard deck joist span can vary due to the size of your deck and the type of material used to construct it. Depending on the size of the deck itself, whether your joists are spaced either 12 inches or 16 inches from the center, and the framing materials and size of deck boards used, deck joist spans may vary.
For calculation of effective deck joist span, the actual joist span length shall be multiplied by the joist span factor in accordance with Table R507.5(5). TABLE R507.5(4) MAXIMUM DECK BEAM SPAN—70 PSF GROUND SNOW LOAD c
The illustrations (one for cantilever joists and one for flush rim-beam hung joists) point out where joist span measurements are taken from — the saddle of the ledger mounted joist hanger to the center of a dropped beam or saddle of the hanger on a flush beam. ... Use either the 2018 IRC deck joist span table or the joist span table in DCA6 ...
Use the joist span table to find the acceptable joist sizes for a 12' span, 2x8s at 12" O.C., 2x10s at 16" O.C., or 2x12s at 24" O.C. Use the Beam and footing sizes table and find the 8' post spacing column. With a 12' deck span, the beam may be either two 2x8s or two 2x10s, depending on the wood used. Depending on the type of soil, the footing ...
How Far Apart Should You Space Deck Joists? The short answer: deck joists are typically set at a distance of either 12 inches or 16 inches apart, on center. A slightly more in-depth look: the maximum joist spacing you can use for your frame will depend on a few factors:The size of your deck joists The framing material; The maximum joist span ...
Although the practice is common, there’s no allowance for interpolating beam spans when the joist length you’re dealing with isn’t listed in the table. For example, a double 2×8 beam can span 8-ft.-9 in. when the deck joists are 6 ft. long. When the deck joists are 8 ft. long, the beam can span 7-7. When building a deck with 7-ft. joists ...
Deck beam spans shall be in accordance with Table 3 and can extend past the post face up to LB/4 as shown in Figure 3. Joists may bear on the beam and extend past the beam face up to the lesser of LO or L/4 as shown in Figures 1A and 2, or the joists may attach to the side of the beam with joist hangers as shown in Figure 1B. Joists shall not ...
A deck may be supported with a 24" x 24" column pad and a minimum 10" sono tube. You may also use a “big foot” footing and sono tube combination. Notes: 1. Supported joist length is half the sum of joist spans on both sides of the beam. 2. Lumber used for joists, trusses, rafters and beams shall be identified by a grade stamp to indicate ...
If you have seen the Deck Joist Span Table, you already understand the relationship between joist span and joist spacing. The closer you space joists, the longer you can span joists – up to a point. For determining beam spans (distance a beam can span between supporting posts), consider the following concept.
Deck beam span table Deck joist span table Deck joist rule of thumb Deck & Porch Construction & Structural Fasteners Deck & Porch Post & Beam Connectors: steel post cap connectors, plywood post to beam cleats, other connectors Deck & Porch Railings, Code Requirements, Safety Deck framing tables, codes, specifications Questions & answers about ...
The minimum size joist used in deck construction depends on the distance the joists span between bearing points and the species and grade of the treated lumber used to create the joists. The building code has strict minimum standards for the weight a deck floor must hold. You can determine the size of the joists using a span table. What Is a Beam?
Deck Span Calculator. This calculator helps you determine the span for your deck joists. To use it, enter the span of the joists in feet, the spacing between the joists in inches, the size of the joists (like 2×6, 2×8, etc.), the load in pounds per square foot (psf), and the type of wood used. ... Input the beam size, joist span, and deck ...
Explore detailed deck beam span charts for sturdy deck construction. Ensure your deck is safe and reliable with accurate measurements and expert advice. (908) 332-8616 Mon - Fri: 9am - 6pm, ... They support the joists and ensure your deck is strong, safe, and built to last. If you’re planning to build or upgrade a deck, understanding the ...
How Does StruCalc Assist with Beam and Joist Sizing? Using the deck beam calculator and deck beam size calculator, engineers can: Evaluate bending moment, shear, and deflection limits. Select materials (wood, LVL, steel) and input spacing between posts. Determine maximum span based on load conditions.
Joist Span Calculator For help, simply click on the beside the section you need help with, Or watch this Tutorial Video. Lumber Species Southern Pine Douglas Fir Douglas Fir-Larch Hemlock-Fir Spruce-Pine-Fir Redwood Western Cedar Ponderosa Pine Red Pine
select A Calculator We have a variety of calculators to help you figure out the dimensions and quantities of all the different building materials you will need on your job site. Find wood beam spans, deck joist spans, spacing and sizes, the number of balusters for your railing, the number of decking boards, or size and layout of footings for ...