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The bearing capacity of gravel depends on it's level of compaction and also on the presence of pore water.*
However the following presumed values for bearing capacity have been quoted in text books:A,+
- Compact gravel and compacted sandy gravel - 600 kPa
- Medium dense gravel and sandy gravel - 200-600 kPa
- Loose gravel and sandy loose gravel - 200 kPa.
*NB These presumed bearing capacities are for footings with a width (B) greater than 1m and where the depth to the phreatic surface is greater than B below the base of the footing.
+ There are a number of empirical formulations used in geotechnical engineering to calculate bearing capacity of footings on soils however they cannot be reproduced effectively here.
A Cobb, F. (2009). Structural Engineer's
Pocket Book. Second edition. Oxford, Butterworth-Heinemann.
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