## How far can a deck overhang the posts?

Maximum allowable overhang cannot exceed 1/4 of the actual main span.

**How much of an overhang for a deck?**

Between one and two inches of deck board overhang is ideal when you attach an outer fascia board, or at least 1 ¾” to 2 ¾” of overhang before installing the fascia.

### How far can you cantilever a 2×10 on a deck?

A Wood Council document (here) gives some very high-end detail about decks, but the take-away as far as cantilevers go is almost exactly the same: 400mm/16” for 2×6 or 2×8 lumber, and 600mm/24” for 2×10 or 2×12 lumber.

**What is the cantilever rule?**

The general rule of thumb is that the back-span (the portion of beam supported below) should be twice the distance of the cantilever. The cantilevered beams then extend out to catch a W10x77 steel beam at the perimeter of the cantilever.

## How far apart should 4×4 posts be on a deck?

6 feet apart

Spacing of Deck Posts

The two most common sizes used for deck posts are 4×4 and 6×6. When using 4×4 posts, place them no more than 6 feet apart, and when using 6×6 posts, no more than 8 feet apart. The reason for these standards is that the railing system won’t have proper support if the posts are too far apart.

**Should decking overhang the frame?**

Once installed, the first board should overhang the front of the deck framing by approximately 1 1/2″ (38 mm) and about 3″ (76 mm) on each side. Screw the first deck board in place. Don’t worry about the 3″ overhang on each side.

### How far can 2×6 decking overhang?

11/2 inches

So, for example, a 2×6 deck board could easily extend 11/2 inches beyond the edge of the supporting joist.

**How far can a 2×10 span between posts?**

A #2-2×10 joist can span between 11′-5” and 18′-0”, as a rafter between 13′-9” and 21′-7”, and as a beam 3′-6” and 13′-0” or more. The span depends on spacing, lumber species, and grade, and for a beam, the lamination thickness, as well as numerous other factors.

## How far can a 2×8 deck joist span without support?

As per general thumb rules and guideline, the maximum span for a 2×8 or 2 by 8 size deck joist is 11 foot 10 inches. Thus, A 2×8 size of deck joist made of #1 southern pine can span a maximum distance of 11 foot 10 inches when spaced 16 inches apart.

**How far can a 2×10 joist cantilever?**

Joist Cantilevers

According to the new span tables and IRC provisions, cantilevers can extend up to one-fourth the backspan of the joist. This means that joists, such as southern pine 2x10s at 16 inches on-center, spanning 12 feet are allowed to cantilever up to an additional 3 feet (see illustration, below).

### How far can you cantilever a 2×6 deck joist?

Looking at the table below, we see that 2×6 floor joists can be cantilevered up to 2 feet and 6 inches (2′-6″) when the joists are spaced 16″ apart. The table also indicates that we need to keep the length of the joist that is not cantilevered between 4′-0″ and 6′-6″.

**Should deck posts be 4×4 or 6×6?**

Deck posts must be a minimum of 4×4 according to the IRC but many jurisdictions require a 6×6 post as a standard. To avoid code violations, many deck builders choose the 6×6 even if the 4×4 is acceptable.

## Can deck posts be 10 feet apart?

The maximum spacing of 4×4 deck posts should be 6 feet on center, while the maximum spacing of 6×6 deck posts should be 8 feet on center.

**How far can a 2×6 overhang?**

Looking at the table below, we see that 2×6 floor joists can be cantilevered up to 2 feet and 6 inches (2′-6″) when the joists are spaced 16″ apart.

### How far can a double 2×6 span without support?

2-grade 2×6 joists can span up to 10 feet 9 inches from beam to beam when spaced the standard 16 inches apart with a maximum live load of 30 inches per square foot.

**How far can a 2×10 span without sagging?**

How Far Can a 2×10 Beam or Header Span? A 2×10 beam – made up of two 2x10s nailed together – can span up to 11′ without support beneath a deck that is 4′ wide. For a more normal-sized deck, the same beam can span 8′, supporting a deck that is 8′ wide.

## Can you span 12 feet with a 2×10?

**Should deck joists be 2×6 or 2×8?**

Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.

### Can a 2×10 span 20 feet?

2×10 floor joists can span up to 20′. However, this is for 12” o.c. spacing for live loads that are 30 psf.

**Should I use 2×6 or 2×8 for deck joists?**

## Is it better to cantilever a deck?

The Many Benefits of a Cantilever Deck

If elevated and structurally licked to building walls, a cantilever deck allows unobstructed panoramic views that safely support the occupant loads. One of the main benefits of cantilever deck design is that the joists and the beams could run past the solid piers.

**How much weight can a 4×4 pressure treated post hold?**

Typically, an 8-foot 4×4 supported at both ends will safely support about 500-pounds in the center. Spreading the weight out along the same 4×4 will increase the load limit to around 1,000-pounds.

### How much weight can a 6×6 pressure treated post hold?

The load capacity of a 3-foot #2 grade 4×4 is 17,426 pounds, and a similar 6×6 is 20,834 pounds or 16% better. However, an 8-foot 4×4 supports 6468-pounds and 2339-pounds at 14-feet, while a 6×6 is 18032 and 10550-pounds respectively – or 64% and 78% more load capacity.

**Can you span 16 feet with a 2×6?**

The maximum distance a 2×6 can span, according to the 2018 IRC, for a floor joist, is 12′-6”, ceiling joist 20′-8”, rafter 18′-0”, deck board 24”, deck joist 9′-11”, deck beam 8′-3”, and 6′-1” as for header.

## Can a 2×12 span 20 feet?

Thus, a 2×12 size of lumber can allow to span 20 feet. For a 20-foot spans, the lumber has to be at least 12 inches in depth used as floor joist.