How far can 3 2x12 span?

Asked By: Almut Birgel | Last Updated: 9th January, 2020
Category: business and finance civil engineering industry
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of 14 feet for a triple 2x12.

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Also, how far can a 2x12 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 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on.

Similarly, how much can a 2x12 support? One 2x12 can support about 180 lbs. per foot or about 2,100 lbs.

In this manner, 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 2x8-10 dimensional lumber 16"OC as floor joists.

How far can a steel beam span without support?

25 feet

39 Related Question Answers Found

Can a 2x12 span 16 feet?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet.

How much weight can a 2x8 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 2x8 @ 16" oc and most preferbaly 2x10.

How far can a 2x6 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. Another option are 2 X 8 rafters spaced 24 inches o.c.

How far can a triple 2x6 beam span?


A triple 2x6 beam over a span of 10' feet should be more than sufficient for normal deck loads.

How do you size a load bearing beam?

Multiply the loading per square foot by the area in square feet of the surface which the beams will be supporting. Divide by the number of beams which will be installed to get the loading per beam.

How far can you span a double 2x8?

For example, a double 2×8 beam can span 8-ft. -0 in. when the deck joists are 6 ft. long.

How much weight can a LVL beam hold?

Note: a single 2×6 will support 347 pounds per lineal foot of beam. Therefore, a double 2×6 carries 2 x 347 = 694 pounds per lineal foot. The required E-value does not change when you double the 2×6 because as you double the allowable load, you are doubling the thickness of the beam.

How are level beam sizes calculated?


  1. Measure your total span between members and ensure that it is not greater than 60 feet.
  2. Design a beam width based on the fact that the typical width of an LVL beam is 1 3/4 inches.
  3. 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.

Is LVL stronger than wood?

Is LVL stronger than wood? The answer is yes, probably. LVL or laminated veneer lumber is made of, you guessed it, thin wood veneers glued together, much like plywood. LVL has a “maximum allowable bending stress” of 2,800 or 3,000 psi.

How much weight can a 2x6 ceiling joist hold?

Fine Homebuilding notes that 2-inch by 6-inch garage joists will support a weight of up to 50 pounds per square foot. If you overload your garage's ceiling joists, the ceiling may appear to sag from the strain.

Do LVL beams sag?

If it is a metal i-beam maybe 1/100th of an inch Your wood/LVL will sag much more. What you are describing is ultra typical when there is a point load above and they used LVL. It is not unsafe because the LVLs will have to be seriously sagging before anything would happen.

Why is an I beam so strong?


I beams are the choice shape for structural steel builds because of their high functionality. The shape of I beams makes them excellent for unidirectional bending parallel to the web. The horizontal flanges resist the bending movement, while the web resists the shear stress.

How much weight can a 4x4 support vertically?

What I figured if the weight is distributed evenly is that each 4x4 post is supporting a max of about 420 pounds.

Can a 6x6 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.