Shear stress for a section of plain concrete member: the value of k

In plain concrete members, for a section subject to a shear force V_Ed and a normal force N_Ed acting over a compressive area A_cc, the absolute value of the design shear stress τ_cp should be taken as:

and the following should be checked: τ_cp ≤ f_cvd where f_cvd is the concrete design strength in shear and compression.

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