- Should deck posts be 4×4 or 6×6?
- Are 2×6 strong enough for deck joists?
- Should I use 4×4 or 6×6 deck posts?
- How far can a 4X10 beam span without support?
- How far can a floor joist span without support?
- What size beam do I need for a 20 span?
- How far can a 2×6 span without support?
- Can a 2×4 span 10 feet?
- What size lumber can span 20 feet?
- What is the longest span for a 2X6?
- Can a 2X6 span 14 feet?
- How far can a triple 2×6 header span?
- What size beam will span 16 feet?
- How much weight can a 6×6 support horizontally?
- How far can a 6×8 beam span without support?
- How far apart can 6×6 posts be?
- Are two 2×4 stronger than one 4×4?
- How far can a 2×6 span for a deck?
- How far can a 6×8 span?
- How far can a triple 2×12 beam span?
- How far can a 2×12 span without support?

## 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..

## Are 2×6 strong enough for deck joists?

2×6 joists should only be used on ground-level decks that do not require, and will not provide for, any guards. … Most decking is not strong enough to support longer spans than 16″. Some builders reduce joist spacing to 12″ on center to strengthen the deck frame or to increase maximum allowable joist spans.

## Should I use 4×4 or 6×6 deck posts?

A short 4×4 can carry an awfully big load, and many deck builders use 6×6 posts as a standard, regardless of the height or load of the deck. … When an undersized post is compressed along its axis by the weight of the deck above, the post can bend or bow, although complete failure is rare.

## How far can a 4X10 beam span without support?

Dimensional Lumber Deck Beam Span ChartJoist SpansDouglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Red Pine4X87′-0″4X108′-4″4X129′-8″3-2X66′-5″17 more rows

## How far can a floor joist span without support?

Douglas fir 2-by-10 joists graded as “Structural Select” allows joist spans up to 21 feet for a live load of 30 pounds per square foot when spaced 12 inches apart, 19 feet 1 inch for 16 inch spacing and 16 feet 8 inches for 24 inch spacing.

## What size beam do I need for a 20 span?

you looking around 4×14, 4x 16 for a 20′ span. i would use a glue lam and not a solid beam ( 1 pc ). steel would be best for strength and space.

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

How far can a 2×6 Rafter span without support? The table states that 2 X 6 rafters spaced 16 inches on center (o.c) can span a maximum distance of 13 feet 5 inches.

## Can a 2×4 span 10 feet?

Can a 2×4 span 10 feet? Generally, 2x4s can extend for up to 20 feet, but a number of issues have to be considered. For instance, the 2×4 would not noticeably sag under its weight at 10 feet.

## What size lumber can span 20 feet?

Joist spacing of 24 inches is allowed for spans between 16 to 20 feet using 2-inch by 10-inch lumber of these three grades.

## What is the longest span for a 2X6?

Max. Live Load 30 lbs/ft2 (1436 N/m2)Maximum Span (ft – in)Nominal Size (inches)Joist Spacing Center to Center (inches)Lumber Grade2 x 61610′ – 9″249′ – 1″2 x 81215′ – 7″10 more rows

## Can a 2X6 span 14 feet?

How Far Can a 2×6 Rafter Span? A 2×6 rafter can span 14 feet 8 inches when spaced 16 inches apart with No. 1-grade southern pine lumber on a roof with a 3/12 slope or less with a maximum live load of 20 pounds per square foot and a dead load of 15 psf.

## How far can a triple 2×6 header span?

For normal deck loads, a triple 2×6 beam over a span of 10′ feet should be enough. The maximum span is 9′ feet for a single 2×6 #2btr yellow pine.

## What size beam will span 16 feet?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet. The larger the deck, the larger the joists.

## How much weight can a 6×6 support horizontally?

2000 lbs.A 6×6 with 12′ span can support 2000 lbs. if you assume a conservative 1400psi bending stress. If you do a good job bonding the two members together, your double 6×6 can support more than 4,000 lbs.

## How far can a 6×8 beam span without support?

Simply so, how far can a beam span without support? When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches.

## How far apart can 6×6 posts be?

8 feetPost Anchors are made to support a maximum raililng height of 42 inches. 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.

## Are two 2×4 stronger than one 4×4?

So a standard 4×4 is actually much weaker than two 2x4s side by side.

## How far can a 2×6 span for a deck?

24 inchesDecking made of 2x4s or 2x6s can span up to 24 inches. If you will run decking at an angle, you might need to put the joists closer together.

## How far can a 6×8 span?

However, I can give you some info and maybe you can interpret. According to Western Woods Use Book by West Coast Lumbermen’s Association, 1973 edition, a 6×8 beam can support about 8,000 lbs., depending on species of wood, grade, etc. on an 8′ span.

## How far can a triple 2×12 beam span?

14 feetof 14 feet for a triple 2×12.

## How far can a 2×12 span without support?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet.