# Question: How Far Can A Triple 2×8 Beam Span?

## How big of a beam do I need to span 20 feet?

Re: 20 foot clearspan beam size Then your floor joists only need to span 8′ between the wall and the “beam” (or between the beams).

In that case, you need something like a 12-16″ GLULAM or LVL to span the 20′ and can use simple 2×8-10 dimensional lumber 16″OC as floor joists..

## How far can a double 2×8 floor joist span?

2 Answers. No, you cannot span 23 feet with conventional lumber, even doubled. It’ll be as bouncy as a trampoline and won’t meet code, and that’s if you can find such lengths. You’ll need at least a 12″ (nominal) I-joist or an engineered floor truss to span that far, or you’ll need an LVL or steel beam midway.

## Is 2 2×6 or 1 4×6 stronger?

A 4×6 joist is theoretically stronger than a doubled 2×6 joist because it’s 1/2″ thicker, but the actual strength depends upon the knots and other inherent weaknesses of any particular piece of lumber (#2 lumber can have some nasty spike knots or large not-so-tight round knots or wane).

## How far can a 2×8 beam span?

12 feetIn 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.

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

of 14 feet for a triple 2×12.

## 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. A double 2×12 beam can span 12 feet; a (2) 2×10 can span 10 feet and so on.

## What size lumber can span 24 feet?

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 101619′ – 1″2416′ – 8″2 x 121225′ – 7″10 more rows

## Can a 6×6 be used as a beam?

To answer you question, no a 6X6 will not carry that span, even if you have only a roof to support. The strength is in the height of the beam, not so much for the width. … If yours is supporting a roof load, he will need to know your area so the snow load if applicable, can be calculated in too.

## How far can a 4 ply 2×12 beam span?

You will see that a 4-ply, 2 X 12 can span a maximum of 13′ while supporting 12′ joists on either side of it.

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

A triple 2×6 beam over a span of 10′ feet should be more than sufficient for normal deck loads. Maximum span for a single 2×6 #2btr yellow pine is around 9′ feet. So YES you should be fine with triple 2×6..

## Can floor joists span 24 feet?

2. Spans are clear distances between supports, and are based on composite action with glued-nailed APA Rated® sheathing or Sturd-I-Floor® panels of minimum thickness 19⁄32 (40/20 or 20 o.c.) for joist spacing of 19.2 or less, or 23⁄32 (48/24 or 24 o.c.) for a joist spacing of 24.

## How far can you span a 2×6 header?

Figure B: Example of Calculating Header SizeHeader SizeMaximum SpanNumber of TrimmersDouble 2×64 ft., 0 in.OneDouble 2×85 ft., 0 in.TwoDouble 2×106 ft., 2 in.TwoDouble 2×127 ft., 1 in.Two

## What size beam do I need to span 15 feet?

As the table shows, no 2×8’s meet the span and spacing requirements, but a 2×10 with an E of 1,300,000 psi and Fb of 1093 psi can span 15 feet 3 inches – more than enough. A 2×12 with an E of 800,000 psi and Fb of 790 psi also works, since it can span 15 feet and 10 inches.

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

Each 6×6 beam only spans 12 feet, of which 2 of those feet are supported by a knee brace. So technically the beams only span 10ft.

## Are 3 2×6’s as strong as a 6×6 post?

One 6×6 will be 22% stronger than three 2×6’s. This assumes, of course, that the long side of the thinner boards is vertical, and that we’re talking standard dimensional lumber where a 2×8 is really 1.5×7.

## How much weight can a 2×12 beam hold?

2 Answers. Putting those numbers into the sagulator, a 12′ 2×12″ Ponderosa pine board lying flat could support 100-125 lbs with about 0.2″ of sag in the middle. If it were on edge, it could support several thousand pounds.

## How far can a 2×10 overhang?

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).