Slender beams (concrete beam: EC2)

Tekla Structural Designer
2021
Tekla Structural Designer

Slender beams (concrete beam: EC2)

Second order effects associated with lateral instability may be ignored if beams are within the geometric limits given by the following;

L0t

50*bcomp/(h/bcomp)1/3

and
h/bcomp
2.5

where

L 0t
  =  

the distance between torsional restraints, which in Tekla Structural Designer is taken as the distance between the faces of the supports

h
  =  
the total overall depth of the beam at the centre of L 0t
b comp
  =  
the width of the compression flange of the beam ( = b w for rectangular sections and b eff for flanged beams)

If either of the above checks fail then a Warning is displayed.

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