2011NF P22-101-2:2011 Execution of steel structures and aluminium structures - Part 2 : technical requirements for steel structures.
2009NF P22-101-2:2009 Execution of steel structures and aluminium structures - Part 2 : technical requirements for steel structures.
1979NF P22-461:1979 Metal construction. Jointing by means of bolts with controlled tightening. Determinaiton of the conventional coefficient of friction.