Beams: the maximum longitudinal spacing between shear assemblies sl,max
Eurocode 2 part 1-1: Design of concrete structures 9.2.2 (6)
The recommended value for the longitudinal spacing sl,max is given by Expression (9.6N):
|sl,max = 0,75 d (1 + cotα)||(9.6N)|
where α is the inclination of the shear reinforcement to the longitudinal axis of the beam.