EN 74-1:2022/prA1

This document specifies, for right angle couplers, swivel couplers, sleeve couplers and parallel couplers working by friction:
—  materials;
—  design requirements;
—  strength classes with different structural parameters including values for resistance and stiffness;
—  test procedures;
—  assessment;
and gives:
—  recommendations for ongoing production control.
These couplers are intended for use in temporary works equipment for example in scaffolds erected in accordance with EN 12811 1 and falsework erected in accordance with EN 12812.