Category Archives: Notices

**Alert – HERA Report R4-103:2005 Design Guide for Openings in Composite Beams Incorporating COMBPEN Composite Beam Penetration Design Software**

Steel Construction New Zealand advises that the composite beam penetration design software, COMBPEN (all versions), must not be used.  Two errors have been found that can result in significant overestimates of strength in stiffened/unstiffened openings being calculated: