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.

## How far can a 4X12 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 4X10 8′-4″
4X12 9′-8″
3-2X6 6′-5″
3-2X8 8′-3″

## What kind of beam do I need for a load-bearing wall?

horizontal structural beam

Beam Only – This should be a horizontal structural beam that is of adequate size. Apart from the 2 ends, the beam will have no upright bearing points.

## How do you build a beam for a load-bearing wall?

Quote from the video:
Quote from Youtube video: If you're going to put a load-bearing beam in the kitchen. You have to have a continuous load path all the way down to the foundation.

## Can you put an opening in a load-bearing wall?

Quote from the video:
Quote from Youtube video: Called jack studs the same style framing is used for door openings windows or even a simple pass-through like this now the next thing i look for is any duct work water lines or electrical in the wall.