B. TECHNICAL

12. Section properties for corrugated web beams

Notations and Remarks:

Steel grades for flanges:

f_yk = 240 N/mm²
for web: f_yk = 215 N/mm²

bg x tg ...	flange dimensions
H ...........	overall height of the beam
U ...........	painting surface per meter
2Ag .......	sectional area of both flanges

A_Q ........ transverse force cross section of the web for taking shear stiffness into account

I_y, I_z ...... moment of inertia

i_{y, iz} ...... radius of gyration
I_t .......... torsional constant (for beams with equal flanges)

I_w ....... warping constant (for beams with equal flanges)

     with A_g ... cross section of one flange

c_lim ...... maximum distance of lateral supports to avoid lateral buckling

VRk ...... transverse force load bearing capacity according to chapter 8.
NRk ...... plastic normal force (for the total cross section)
MRk ...... plastic moment

For evaluation of bearing capacities NRk and MRk a constant compression force distribution (kc = 1) and lateral supports in a distance of 1.5 m (to avoid lateral instability) were assumed.