# RF-CONCRETE Surfaces – Online Manual Version 5

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# 2.4.4.3 Shear force resistance of the concrete compression strut

#### Shear force resistance of the concrete compression strut

For structural components with shear reinforcement perpendicular to the component's axis (α = 90°), the shear resistance VRd is the smaller value from:

where

 Asw cross-sectional area of the shear reinforcement s spacing of links fywd design yield strength of the shear reinforcement ν1 reduction factor for the concrete strength in case of shear cracks αcw coefficient for considering the stress state in the compression chord

For structural components with inclined shear reinforcement, the shear force resistance is the smaller value from: