ADRIAN W. PAGE

ABSTRACT

Australia is not in a recognized earthquake zone, but does have a history of small to medium sized intraplate earthquakes.  Unreinforced masonry is a commonly used form of construction, so that there is potential for damage to masonry structures from these events. A new earthquake loading standards has recently been issued, and it contains mandatory requirements for the seismic design of structures in all areas. For ductile structures the provisions are usually quite nominal, but there are significant implications for unreinforced masonry in some areas. This paper reviews the requirements of the new Australian earthquake loading code with regard to unreinforced masonry. The requirements range from deemed to comply detailing in areas of low seismic risk, to full calculation in high risk areas. Significant height limitations have also been imposed in some cases. Despite these restrictions, well constructed and detailed unreinforced masonry is still an economical and attractive solution in many instances.

G-34