Timber Strength
Calculate Timber Strength instantly with the exact formula and a worked example.
Timber Strength
Strength class C per EN 338 (14–50)
k_mod (0.6 permanent … 1.1 instantaneous load)
γ_M (1.3 solid timber, 1.25 glulam)
Design bending strength
14.77MPa
Characteristic bending strength f_m,k
24MPa
Reduction from characteristic value
38.5%
More about: Timber Strength
What it calculates
The “Timber Strength” calculator computes Design bending strength in MPa from 3 parameters: strength class c per en 338 (14–50), k_mod (0.6 permanent … 1.1 instantaneous load), γ_m (1.3 solid timber, 1.25 glulam).
A calculation that accounts for local rules and regional norms.
Example calculation
With parameters Strength class C per EN 338 (14–50) = 24, k_mod (0.6 permanent … 1.1 instantaneous load) = 0.8, γ_M (1.3 solid timber, 1.25 glulam) = 1.3 the result is 14.77 MPa (Eurocode 5; in EN 338 classes the number equals the characteristic bending strength).
How to use
- Enter strength class c per en 338 (14–50), k_mod (0.6 permanent … 1.1 instantaneous load) and γ_m (1.3 solid timber, 1.25 glulam) — each field above is adjustable with a slider.
- Design bending strength (MPa) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Timber Strength calculated?
The Timber Strength calculator computes Design bending strength (in MPa) from strength class c per en 338 (14–50), k_mod (0.6 permanent … 1.1 instantaneous load), γ_m (1.3 solid timber, 1.25 glulam). Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Timber Strength calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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