## How do I know what size beam to get?

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.

## How big of a beam do I need to span 30 feet?

If you have a 30-foot span, it is important to know just how long a beam you will need for support. There is a good rule of thumb for this: divide your span (in inches) by 20. So, if your span is 30 feet (or 360 inches) you would divide that by 20 to come to 18 feet.

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## How far can a load bearing beam span?

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 beam is needed to span 22 feet?

Use one 22′ long W8x48 steel beam down the center of your 22’x28′ rectangle. This steel beam is 8.5″ deep, plus a 1.5″ deep wood nailer plate, plus 0.75″ floor sheathing, means that the floor is 10.75″ at the deepest point. Then use 2×10 joists spaced at 16″ on center spanning 14′ on each side of the steel beam.

## 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 big of a beam do I need to span 12 feet?

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 beam do I need to span 14 feet?

The size of the beam will vary depending on the wood species you use, but I’ll assume Douglas Fir since that’s common in my area. According the charts I have, you would need a 6×12 beam on each side to support 7680 pounds over a 14span (assuming you want less than a 1/360 deflection).

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## How far can a LVL beam span without support?

Measure your total span between members and ensure that it is not greater than 60 feet. Because of transport limitations, the maximum standard length for manufactured beams is sixty feet.

## What size beam can span 24 feet?

One may also ask, 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.

What size lumber can span 24 feet?

Maximum Span (ft – in)
Nominal Size (inches) Joist Spacing Center to Center (inches) Lumber Grade
2 x 10 24 16′ – 8″
2 x 12 12 25′ – 7″
16 23′ – 3″

## How far can a 6×8 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 can you span a 6×8 beam?

Maximum Span (ft – in)
Nominal Size (inches) Joist Spacing Center to Center (inches) Lumber Grade
2 x 14 16 18′ – 0″

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

Dimensional Lumber Deck Beam Span Chart

Joist Spans
Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Red Pine 4X8 7′-0″
4X10 8′-4″
4X12 9′-8″
3-2X6 6′-5″

## How much weight can a 2 by 6 hold?

The weight that can be supported by a double or triple wood header

Span (feet) Weight Supported (lb)
2 x 2” x 6 2 x 2” x 10″
6 1680 5000
8 3760
10 3010

## How far can a 2×10 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.

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## 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.