The new Australia/New Zealand standard on composite steel-concrete buildings, ASNZS2327

This paper will provide a summary of the new Australia-New Zealand Standard on the design of composite steel-concrete buildings ASNZS2327 which is due for release in 2017. This standard which has included over five years of development has harmonized design provisions across the Tasman Sea, in steel, concrete and composite structures. This project was carried out in parallel with the standard for bridge structures (ASNZS 5100.6) and thus there was significant commonality and cross-over. ASNZS2327 covers the design of structural elements such as slabs, beams, columns and joints, as well as addressing the system behaviour for serviceability and fire which are highly pertinent for the design of steel and composite structures. Methods for the design for earthquake have also been included. The standard allows for the increase in concrete compressive strength up to 100 MPa and steel strengths up to 690 MPa. In addition, the standard has involved significant amounts of structural reliability studies to be carried out. This paper will provide a summary of some of the salient issues as well as highlighting future areas of interest which may be considered for future revisions.