Unfit 24; A commonly used rock strength multiplier compared to sandstone multipliers used in South-Eastern Queensland and North-Eastern New South Wales

M. Evert, J. Worden and P. Kidd


This paper examines the engineering issues relating to the utilisation of a commonly used rock strength multiplier with Sandstone in Southeast Queensland (SEQLD) and Northeast New South Wales (NENSW).

For this paper, rock strength results provided by the Snowy Mountains Engineering Corporation (SMEC) in S-E QLD and N-E NSW are compared to results of other studies made in S-E QLD, in the Handbook of Geotechnical Investigation and Design Tables (Look, 2007).