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

of 14 feet for a triple 2×12.

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.

One may also ask, 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.

Herein, what size lumber can span 20 feet?

Re: 20 foot clearspan beam size 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 2×8 beam 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. The larger the deck, the larger the joists.

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

One 2×12 can support about 180 lbs. per foot or about 2,100 lbs.

### How do you size a beam?

Design a beam depth based on the rule of thumb for estimating the depth of manufactured beams which is to divide the span by 20. Beam depths are typically 5 1/2 inches, 7 1/4 inches, 9 1/4 inches, 11 1/4 inches, 11 7/8 inches, 14 inches, 16 inches, 18 inches, and 20 inches.

### How do you size a beam for a load bearing wall?

The formula for the section modulus is beam width times beam depth squared divided by 6. A two 2-by-6 standard beam has actual dimensions of 1.5-by-5.5 inches which would give a section modulus of 1.5 x 5.5 x 5.5 / 6 = 7.6 which is not enough for this example. A 2-by-8 beam would be sufficient.

1,200 lbs

### How do you size a header beam?

How to Size Headers & Beams Select a type of wood based on your load needs. Use a span table to determine the total load of foot per beam. Choose the appropriate span from those listed on the table. Move down the column of the lumber you’ve selected to see the capacity listing. Double your beams for further support in planning and in building.

### How much weight can a 2×8 support?

some of it gets pretty technical in nature, and mostly relates to pounds / square foot of loading. 2x6s are generally used for ceiling joists, esp since you said 24″ oc and reallllly short spans only (5 or 6 feet ). Most floor loads would be a minimum of 2×8 @ 16″ oc and most preferbaly 2×10.

### How far can I span a double 2×8?

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.

### How much weight can a 4×4 beam support horizontally?

In general, a 2×4 wooden beam can support the weight up to a ton horizontally, and thus, a wooden beam of 4×4 can easily support double of the weight mentioned above horizontally.

21 feet

### How many support beams do I need?

Beam Span Calculator For example, for a 24 foot wide house with a center floor beam, the total supported length of the floor joist is 24 feet. Then you divide this by two to give a supported length of 12 feet. This is the number you will use for supported length.)

### 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.

### How far can you cantilever a 2×8 joist?

If the code span tables allow a 2×8 to span 12 feet, then the cantilever can be 3 feet.

### How far can you span a 2×4 ceiling joist?

The ceiling joists are 2X4s on 16 inch centers that span the 10 plus feet.

### What size lumber can span 20 feet?

Max. Live Load 60 lbs/ft2 (2873 N/m2) Maximum Span (ft – in) Nominal Size (inches) Joist Spacing Center to Center (inches) Lumber Grade 2 x 12 24 13′ – 2″ 2 x 14 12 20′ – 10″ 16 18′ – 0″