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Lightweight concrete members not requiring design shear reinforcement: the values of CRd,c, vmin and k1

Eurocode 2 part 1-1: Design of concrete structures   11.6.1 (1)

The design value of the shear resistance of a lightweight concrete member without shear reinforcement VlRd,c is given by:

VlRd,c = [ClRd,c η1 k (100 ρl flck)1/3 + k1 σcp] bw d  ≥ (η1 vl,min + k1 σcp) bw d (11.6.2)


The recommended value for ClRd,c is 0,15/γC, that for vl,min is 0,028k3/2flck1/2 and that for k1 is 0,15.

National choice