How much weight can a 2x12 beam hold?

Asked By: Fatine Ameixa | Last Updated: 9th April, 2020
Category: business and finance civil engineering industry
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One 2x12 can support about 180 lbs. per foot or about 2,100 lbs. total for a 12' span.

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Keeping this in consideration, how far can you span a 2x12 beam?

A double 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on.

Beside above, how much weight can a 2x12x20 hold? You'd need some maths to figure out specifics but those 2x12's would hold around 150 pounds per foot x length x spans but then at some point you get into mode of rupture or elastics, dead weight live weight.

Accordingly, 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 much weight can a 2x10 hold?

1,200 lbs

39 Related Question Answers Found

What size joist to span 20 feet?

Max. Live Load 30 lbs/ft2 (1436 N/m2)
Maximum Span (ft - in)
Nominal Size (inches) Joist Spacing Center to Center (inches) Lumber Grade
2 x 10 12 20' - 3"
16 18' - 5"
24 15' - 0"

How far can a 2x6 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 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet.

How do you size a load bearing beam?

per square foot for northern areas of the U.S. For rooms which are heavily frequented, it may be 50 lbs. per square foot. 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 strong is a 2x12?

One 2x12 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.

What size rafters do I need to span 20 feet?

Max. Live Load 20 lbs/ft2 (956 N/m2)
Maximum Span (ft - in)
Nominal Size (inches) Rafter Spacing, Center to Center (inches) Lumber Grade
2 x 10 12 27' - 6''
16 25'
24 20' - 9''

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 much weight can a 2x8 joist hold?

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 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 far can trusses span without support?


Trusses can easily span 10-15 metres or more without the need for internal supports.

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 far can you span a 2x6 ceiling joist?

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.

How long can a support beam be?

As long as you have the physical strength, it may be possible to lift support beams that are up to 10 feet long. The issue is less about the weight of the beam than the fact that beams are positioned above your head.

How much do LVL beams cost?

these LVL beams cost about $500.

How much weight can a 4x4 beam support?


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.

How far can a 4x6 span without support?

Obviously, the larger the beam, the greater the distance it can span between posts. A Redwood 4x6 beam should span no more than 6' between supporting posts.

How much weight can a 2x4 joist support?

If there is no strong wind, a 2x4 measuring at least 8 feet can support at least 1,000 pounds vertically. Such calculations would hold if, for instance, the load is square.