D5.B.3.6 Clause 6.3.1.3 – Slenderness for flexural buckling
The Dutch NA requires the implementation of clause 12.1.1.3 and 12.1.5.3.2 of NEN 6770 and clause 12.1.1.3 of NEN 6771.
Clause 12.1.1.3 (NEN 6770)
This clause gives the equations to evaluate the effective lengths for various support conditions. STAAD.Pro uses the effective length factor "K" which allows the user to set/modify the effective lengths for a member.