🔧 Wood Beam Load Calculator
Check beam load capacity with actual sizes, span, species data, and uniform or point load demand.
Calculation breakdown
| Species | Fb | E | Note |
|---|---|---|---|
| 2x6 | 1.5 x 5.5 | 8.25 in2 | Shed and shelf |
| 2x8 | 1.5 x 7.25 | 10.88 in2 | Short floor beam |
| 2x10 | 1.5 x 9.25 | 13.88 in2 | Deck and porch |
| 2x12 | 1.5 x 11.25 | 16.88 in2 | Longer simple spans |
| Use | Load | Ratio | Comment |
|---|---|---|---|
| Floor beam | 40 psf | L/360 | Common occupancy |
| Deck beam | 60 psf | L/360 | Outdoor live load |
| Roof beam | 20 psf | L/240 | Snow or roof service |
| Shelf beam | 20 psf | L/180 | Light storage use |
| Case | Demand | Check | Comment |
|---|---|---|---|
| Floor beam | 40 psf | L/360 | Common occupancy |
| Deck beam | 60 psf | L/360 | Outdoor live load |
| Roof beam | 20 psf | L/240 | Snow or roof service |
| Shelf beam | 20 psf | L/180 | Light storage use |
Count the apt dimension of wooden beam matter for every project. Helpful calculator for durations it is possible to control whether particular beam with undoubted length last. It checks whether it supports uniformed linear burden.
The utility compares the allowed bend and stress with the involved values. By means of load calculator you simplify the work and reduce mistakes comparatively to manual counts. Structural beam calculator give support reactions, shear force, flex moment, deflection and stress diagrams.
How to Size a Wooden Beam
Users can choose various support provisions and loading types for the beam model.
Beams, joists and rafters bend under burden. During the beam bends, the gross fibers compress at the upper edge. Simultaneously the fibers tighten below.
The grossest wood fibers up and below suffer more than the internal. The strength grow usually square with the depth, but stability as falling complicate that. All beams require to mind length, width, height and rotations limits.
Traditional wood beams commonly are set against revolution at the finishes, and the upper aspect usually stands by means of diaphragm shell.
Several elements induce how many weight beam lasts. The skill depends of wood species and wood grade. Also the load duration matter, especially if the wood uses commonly, for instance at joists.
For instance 4×6-beam from SPF (spruce, pine, fir) with intermediate grade, that permanently loads, last around 1500 pounds above 16-foot duration. Do not lack to know the local load requests before estimate maximum durations for rafters or joists. Some regions have a lot of snow, other different winds or earthquakes.
You must weigh all those factors during design of wooden structures.
One uses different wood types for beams as Southern Pine dimension lumber or Southern Pine glued laminated deposits. Actual alternatives are LVL. If clamped beam well assemble it lasts likewise as the solid.
Both bear equal weight and deflect likewise. For correspond about beam, point length and width. Give also the stiffness and breaking strength of the wood.
That helps to estimate the involved thickness for apt load capacity and deflection.
