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GEO5

Tree
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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 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: