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Design punching shear resistance of a slab without shear reinforcement: the values of CRd,c, vmin and k1

Eurocode 2 part 1-1: Design of concrete structures   6.4.4 (1)

The design punching shear resistance vRd,c [MPa] may be calculated as follows:

vRd,c = CRd,c k (100 ρl fck)1/3 + k1 σcp ≥ (vmin + k1 σcp) (6.47)


In this calculation of the design punching shear resistance, the recommended value for CRd,c is 0,18/γC, that for vmin is given by Expression (6.3N) and that for k1 is 0,1.

vmin = 0,035 k3/2 fck1/2 (6.3N)

National choice