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.
