Steve Parry BSc (Hons) MSc CGeol FGS CEng FIMMM

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Steve has undertaken numerous landslide hazard and risk assessments, both quantatative and qualitative, in the UK, Hong Kong and Asia-Pacific Region. Stave was a co-author of the new CIRIA Guidelines on landslide hazard assessments (In Press). Steve was co-author  of “Guidelines for Natural Terrain Hazard Studies” which formed the basis of landslide risk assessment in Hong Kong until 2016. Steve led the technical review of these guidelines, the results of which forms the basis of the new Government guidelines. 

The framework for the application of geological knowledge to engineering problems is the engineering geological model and this approach should form the basis of all engineering geological work.  Steve is a former Chair of the International Association of Engineering Geology and the Environment (IAEG) Commission C25 on Engineering Geological Models. C25 has recently published "Guidelines for the development and application of engineering geological models on projects"

Baynes, F. J. and Parry, S. 2022. Guidelines for the development and application of engineering geological models on projects. International Association for Engineering Geology and the Environment (IAEG) Commission 25 Publication No. 1, 129 pp.

The Guidelines are freely downloadable from

 Guidelines – IAEG 

"Whilst engineering geological mapping is concerned with the properties of materials and their immediate or short term engineering implications, geomorphological mapping takes in a greater sweep of time, combining the recent geological past with present geomorphology and its foreseeable future. Integration of the two approaches combines the short term static with the longer dynamism of the landscape”

To maximise any benefits all ground investigations should be designed using engineering geological models based on a conceptual framework. This ensures uncertainties are investigated and ground risk reduced.

  An engineering geological model based on observational data within a realistic and appropriate conceptual framework should allow an evaluation of the site conditions that an experienced contractor could reasonably have foreseen based on knowledge, experience and available data i.e. unforeseen ground conditions are conditions that were neither observed based on generated data nor anticipated by the conceptual framework.

Engineering geological evaluations of dam projects evaluating reservoir water tightness and stability as well as resource availability, dams type suitability and foundation issues.