Verification According to the Theory of Limit States
When performing the analysis according to the theory of limit states the strengths of timber are reduced by the coefficient of material reliability γs.
Check for bending and stress caused by the normal force
The normal stress checking is based on the following expression:
where: | σn | - | normal stress caused by tension or compression |
σm | - | bending stress | |
fn | - | tensile resp. compressive strength of timber | |
fm | - | bending strength of timber |
The value of utilization is provided by:
Check for shear
The shear stress τ checking is based on the following expression:
where: | fv | - | shear strength of timber |
The value of utilization is provided by:
