Strengths help

It is possible to dimension a section by giving the strengths with their magnification factors. Its meanings are:

StrengthUnitsPositive sign isMeaning
Axial forcekNtractionForce in the axe of the section
M1kN·mtraction downMomentum around an horizontal axe
M2kN·mtraction downSecondary Momentum around a vertical axe
ShearkNShear force in the section

All these strengths should have magnification factors applied to them. They are used to calculate the section for ultimate resistance.

In order to calculate fisuration, the strengths without magnification are necessary. To approximate them, it is used the service factor. To obtain them, the following applies:

Strength(service)=Strength(magnified)/service factor