Some examples of variability within Hawkesbury Sandstone

Hawkesbury Sandstone is usually regarded as a uniform, predictable and ‘benign’ formation that makes the life of the geotechnical engineer easy. This paper will present a number of case histories discussing features within Hawkesbury Sandstone, such as shale beds, brecciated shale, and shear zones. The impact that these features have had on engineering design and site performance has been discussed for each of the case histories.