The shear reinforcement should form an angle of between 45 and 90 degrees to the longitudinal axis of the structural element.

The ratio of shear reinforcement is given by: ρw = Asw / (s bw sin α) where

Asw is the area of shear reinforcement within length s,

The minimum shear reinforcement ratio is given by

ρw,min = (0,08 fck0,5) / fyk

The maximum spacing between shear assemblies should not exceed

sl,max = 0,75 d (1 + cot α)

The transverse spacing of the legs in a series of shear links should not exceed st,max:

st,max = 0,75 d ≤ 600 mm

National Annex: Denmark

The minimum shear reinforcement ratio is given by

ρw,min = (0,063 fck0,5) / fyk

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PRE-Stress Documentation