University of Newcastle, NSW
N. G, SHRIVE University of Calgary, Canada

Concentrated toads are applied to masonry from a variety of sources. Masonry design codes typically allow for the enhancement of masonry strength beneath a concentrated load due to the effect of the surrounding lightly stressed material. Other than in the new Australian Code, no distinction is made between solid and hollow masonry, although the latter fails in a completely different manner from the former. Reasonably comprehensive rules for the design of solid masonry subject to concentrated loading have been developed recently and are described here. The application of these rules to hollow masonry is shown to be questionable. Strength enhancement occurs in hollow masonry on the basis of loaded length rather than loaded area ratio, but the effects of many of the factors known to affect solid masonry strength still need to be elucidated for hollow masonry. The development of knowledge on the effects of concentrated loads on masonry strength is shown to be influenced both directly and indirectly by Professor Arnold Hendry.