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Compressive resistance

The compressive resistance for classes 1, 2, and 3 are defined by the expression

Following expression is used for the class 4

Where is:

A

  • The cross-sectional area

Aeff

  • The cross-sectional area of the effective cross-section

fy

  • The yield strength

γM0

  • The partial safety factor

The compressive resistance of the perforated cross-section for classes 1, 2, and 3 are defined by the expression

Following expression is used for the class 4

Where is:

Aosl

  • The cross-sectional area of the perforated cross-section

Aeff,osl

  • The cross-sectional area of the effective perforated cross-section

fu

  • The yield strength

γM2

  • The partial safety factor

The design value of compressive resistance Nc,Rd is chosen as the minimum of these two values. The design value of the resistance is reduced for "High shear" (described in the chapter "Low and high shear"). The reduction factor is given by the expression

Where is:

ρzy

  • The reduction factor making an allowance for the presence of shear forces in directions z and y

AV,z,AV,y

  • The shear areas for directions z and y

A

  • The cross-sectional area

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