CSN 731401
The CSN 73 1401 standard (from year 1998) adopts as the material parameter the steel design strength Rd. If this value is not determined for the used steel directly, it is back calculated from the steel yield stress as:
where: | γm | - | material coefficient taking the value of 1.15 pro Ry ≤ 300 MPa and 1.25 for Ry > 300 MPa |
Check for bending
The normal stress σ is checked based on the following expression:
and the value of utilization is provided by:
Check for shear
The shear stress τ is checked based on the following expression:
and the value of utilization is provided by:
State of plane stress verification
The state of plane stress is checked exploiting the following conditions:
where: | σ1 | - | normal stress |
τ1 | - | shear stress in the verified section |
and the value of utilization is provided by:
Literature:
CSN 73 1401 (1998): Design of steel structures.