20/30424612 DC

This standard 20/30424612 DC BS EN 74-1. Couplers, spigot pins and baseplates for use in falsework and scaffolds is classified in these ICS categories:

• 91.220 Construction equipment

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.

For testing, screw couplers are tightened to a torque of 50 Nm and wedge couplers are tightened with a 500 g hammer until the jarring blow.