Staff profile

David Toll is a Professor in the Department of Engineering and Co-Director of the Institute of Hazard, Risk and Resilience at Durham University, UK. He also has the following roles:

• Chair, British Geotechnical Association
• Chair of Technical Committee TC106 on Unsaturated Soils of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE) (2014-2022)
• Chair, Joint Technical Committee JTC2 of the Federation of International Geo-Engineering Societies (representing ISRM, ISSMGE, IAEG and IGS) (2005-2017)
• Kwang-Hua Chair Professor at Tongji University, China
• Chair, Institution of Civil Engineers North East (2013-14)
• Chair, Northern Geotechnical Group (the regional group of the British Geotechnical Association and part of ICE North East) (2009-2014)

David Toll's research encompasses two highly relevant areas of civil engineering: (i) the engineering behaviour of unsaturated and tropical soils and (ii) the application of information technology to geotechnical engineering. The primary focus for his work on unsaturated soils is to find engineering solutions for natural hazards, particularly landslides. Much of his current work examines the impacts of climate change on transportation infrastructure through field and laboratory studies and numerical modelling. His research in information technology involves work on data exchange and standards, BIM, data acquisition and computer control systems.

He was Chair of the Scientific Committee for the European Conference on Soil Mechanics and Geotechnical Engineering held in Edinburgh in 2015. He has been a member of the organising/technical committee for many international conferences on unsaturated soils: Singapore, 2000; Recife, 2002; Weimar, 2003; Trento, 2005; Nanjing, 2007; Barcelona, 2010; Pattaya, 2011; Naples 2012; Sydney 2014; Lisbon 2020 and organised the First European Conference on Unsaturated Soils in Durham, 2008. He also organises the conference series on Information Technology in Geo-Engineering with conferences in Shanghai in 2010 and Durham in 2014.

He has twice been a member of the editorial advisory board of Geotechnique and been member of the Editorial Panels for two Geotechnique Symposia in Print (2011 and 2013). He was the founding editor for the international journal, Geotechnical and Geological Engineering, published by Springer, and remains a member of the editorial board. He is a member of the editorial board of Transportation Geotechnics and has been for the Quarterly Journal for Engineering Geology and Hydrogeology. 

He is Director of the Sustainable Infrastructure Research Challenge for the Department of Engineering. He has been Director of Education, Design Coordinator, Accreditation Coordinator and International Coordinator for the School of Engineering and Computing Sciences. He teaches Geotechnical Engineering and Mechanics on the undergraduate MEng course in Engineering.

• geotechnical engineering
• engineering geology
• information technology

• Seismic Safety and Kathmandu’s Historic Urban Infrastructure

• Geo-Engineering Representation (JTC2 site)
• GeotechML - a web-based format for geotechnical data
• Geotechnical Computer-aided Learning
• ISSMGE Technical Committee on Unsaturated Soils

• 2020: RF080430: Developing A Novel Climate Change Risk Assessment Framework For Cultural Heritage In Turkey, AHRC, 2020-12-01 - 2021-11-30
• 2020: Shallow Landslide Susceptibility Mapping in Rize, Turkey, Royal Academy of Engineering, £80000.00, 2020-04-15 - 2022-04-22
• 2019: Embedding Sustainability And Inclusivity In Durham University Taught Programmes(£30000.00 from Royal Academy of Engineering)
• 2019: Integrated Modelling of Landslides due to Hydrometeorological Impact in Langat Basin, Peninsular Malaysia (iModelLandslides)(£357233.62 from Natural Environmental Research Council)
• 2018: Achillies(£551677.63 from Engineering and Physical Sciences Research Council)
• 2017: Increasing Climate Resilience of Urban Infrastructure(£37200.00 from British Council Yemen)
• 2017: Reducing Disaster Risk to Life and Livelihoods by Evaluating the Seismic Safety of Kathmandu's Historic Urban Infrastructure(£109301.00 from The British Academy)
• 2017: Sustainability and Resilience of Transportation Infrastructure in African Countries(£1108696.16 from Engineering and Physical Sciences Research Council)
• 2016: GCRF - CLIMATE CHANGE IMPACT ON INFRASTRUCTURE IN AFRICA(£21000.00 from Epsrc)
• 2016: IAA-IMPROVEMENT AND COMMERCIALISATION OF THE DURHAM TENSIOMETER(£37552.19 from Epsrc)
• 2013: iSmart(£240833.00 from Epsrc)
• 2004: BIONICS(£73695.00 from Epsrc)
• 2004: MUSE(£184136.00 from European Commission)

Available for media contact about:

• Mechanics: Geotechnical engineering i.e. the engineering properties of the ground with relevance to roads, landslides, foundations
• Geological hazards: Landslides, particularly rainfall-induced landslides in tropical areas
• Computers: International Data Exchange (XML)
• Asia (excluding Middle East): Tropical Soil Engineering with experience in Singapore, Malaysia, China

Chapter in book

• Pradhan, S., Toll, D.J., Rosser, N.J. & Brain, M.J. (2020). Field monitoring of soil-moisture to understand the hydrological response of a road-cut slope. In 4th European Conference on Unsaturated Soils (E-UNSAT 2020). Cardoso, R., Jommi, C. & Romero, E. EDP Sciences. 195: 01029.
• Toll, D.G. (2012). Tropical Soils. In ICE Manual of Geotechnical Engineering. Burland, J., Chapman, T., Skinner, H. & Brown, M. London: Institution of Civil Engineers. Chapter 30: 341-361.
• Toll, D.G. (2012). The Behaviour of Unsaturated Soils. In A Handbook of Tropical Residual Soil Engineering. Huat, B.B.K., Toll, D.G. & Prasad, A. London: Taylor and Francis. Chapter 4: 117-145.
• Toll, D. G., Mendes, J., Gallipoli, D., Glendinning, S. & Hughes, P. N. (2012). Investigating the impacts of climate change on slopes: field measurements. In EARTHWORKS IN EUROPE. Radford, TA 26: 151-161.

Conference Paper

• Kumar, Ashutosh, Azizi, Arash & Toll, David (2022), The Influence of Cyclic Loading Frequency on the Response of an Unsaturated Railway Formation Soil, Geo-Congress 2022. 274.
• Mendes, J., Gallipoli, D., Toll, D. G. & Tarantino, A. (2018), First Saturation and Resaturation of High Capacity Tensiometers with 1.5 MPa High Air Entry Value (HAEV) Ceramic Filters, PanAm Unsaturated Soils 2017. 514.
• Tinoco, J., Gomes Correia, A., Cortez, P. & Toll, D. (2017), Data-driven Classification Approaches for Stability Condition Prediction of Soil Cutting Slopes, 19th Int. Conf. on Soil Mechanics and Geotechnical Engineering. Seoul, Korea.
• Stirling, S., Helm, P., Glendinning, S., Asquith, J., Hughes, P. & Toll, D. (2017), Deterioration of geotechnical infrastructure: the influence of asset aging through environmental cycling, 19th Int. Conf. on Soil Mechanics and Geotechnical Engineering. Seoul, Korea.
• Kerr, Heather, Johnson, Karen, Toll, David G. & Mansfield, Florence (2016), Flood Holding Capacity: A Novel Concept to Evaluate the Resilience of Amended Soils, Geo-Chicago 2016. 393.
• Toll, D.G., Hughes, P.N. & Asquith, J.D. (2016), Soil water retention behaviour for an instrumented embankment, 9: 3rd European Conference on Unsaturated Soils. Paris, 10013.
• Wang, Yu, Sheng, Daichao, Ross, Keith & Toll, David G. (2016), Modelling of the water retention characteristic of deformable soils, 9: 3rd European Conference on Unsaturated Soils. Paris, 11005.
• Beckett, Christopher, Fourie, Andy & Toll, David (2016), Water repellent soils: the case for unsaturated soil mechanics, 9: 3rd European Conference on Unsaturated Soils. Paris, 11011.
• Toll, D.G., Asquith, J.D., Hughes, P.N. & Osinski, P. (2016), Soil Water Retention Behaviour of a Sandy Clay Fill Material, 143: 3rd International Conference on Transportation Geotechnics. Guimarães, Portugal, 308.
• Osinski, Piotr, Toll, David & Koda, Eugeniusz (2016), Comparison of Soil Water Retention Curves for sandy clay, obtained using different laboratory testing methods, 9: 3rd European Conference on Unsaturated Soils. Paris, 11008.
• Glendinning, S., Helm, P.R., Rouainia, M., Stirling, R.A., Asquith, J.D., Hughes, P.N., Toll, D.G., Clarke, D., Powrie, W., Smethurst, J., Hughes, D., Harley, R., Karim, R., Dixon, N., Crosby, C., Chambers, J., Dijkstra, T., Gunn, D., Briggs, K. & Muddle, D. (2015), Research-informed design, management and maintenance of infrastructure slopes: development of a multi-scalar approach, IOP Conference Series 26: International Symposium on Geohazards and Geomechanics (ISGG2015). Warwick, IOP Publishing, 012005.
• Winter, M.G., Smith, D.M., Eldred, P.J.L. & Toll, D.G. (2015), Introduction to the XVI European Conference on Soil Mechanics and Geotechnical Engineering: Geotechnical Engineering for Infrastructure and Development, in Winter, M.G., Smith, D.M., Eldred, P.J.L. & Toll, D.G. eds, 1: XVI European Conference on Soil Mechanics and Geotechnical Engineering. Edinburgh, London: ICE Publishing, 1-10.
• Toll, D.G., Asquith, J.D., Fraser, A., Hassan, A.A., Liu, G., Lourenço, S.D.N., Mendes, J., Noguchi, T., Osinski, P. & Stirling, R.A. (2015), Tensiometer techniques for determining soil water retention curves, in Chen, Z.H., Wei, C.F., Sun, D. & Xu, Y.F. eds, 6th Asia-Pacific Conference on Unsaturated Soil. Guilin, China, London: CRC Press (Taylor & Francis), 15-22.
• Toll, D.G., Md. Rahim, M.S., Karthikeyan, M. & Tsaparas, I. (2015), Soil atmosphere interactions for analysing slopes in tropical soils, in Oda. F., Murakami, A., Uzuoka, R. & Kimoto, S. eds, Computer methods and Recent Advances in Geomechanics. Kyoto, London: Taylor & Francis, 1333-1338.
• Hughes, D., Karim, M.R., Briggs, K., Glendinning, S., Toll, D., Dijkstra, T., Powrie, W. & Dixon, N. (2015), A Comparison of numerical modelling techniques to predict the effect of climate on infrastructure slopes, in Winter, M.G., Smith, D.M., Eldred, P.J.L. & Toll, D.G. eds, 7: XVI European Conference on Soil Mechanics and Geotechnical Engineering. Edinburgh, London: ICE Publishing, 3663-3668.
• Hassan, A.A. & Toll, D.G. (2015), Water content characteristics of mechanically compacted clay soil determined using the electrical resistivity method, in Winter, M.G., Smith, D.M., Eldred, P.J.L. & Toll, D.G. eds, 6: XVI European Conference on Soil Mechanics and Geotechnical Engineering. Edinburgh, 3395-3400.
• Asquith, J.D. & Toll, D.G. (2014), Data Acquisition Software for Controlling Serial Ports with Cloud Data Storage, in Toll, D.G., Zhu, H., Osman, A., Coombs, W, Li, X. & Rouainia, M. eds, 2nd International Conference on Information Technology in Geo-Engineering. Durham, Amsterdam: IOS Press (Millpress), 163-169.
• Toll, D.G. & Hassan, A.A. (2014), Data Acquisition and Control Software for Automated Resistivity Measurements, in Toll, D.G., Zhu, H., Osman, A., Coombs, W, Li, X. & Rouainia, M. eds, 2nd International Conference on Information Technology in Geo-Engineering. Durham, Amsterdam: IOS Press (Millpress), 170-176.
• Md. Rahim, M.S. & Toll, D.G. (2014), Fully Coupled Flow-Deformation Analyses of Infiltration and Matric Suctions within a Tropical Soil Slope, in Khalili, N., Russell, A. & Khoshghalb, A. eds, 2: 6th International Conference on Unsaturated Soils. Sydney, London: Taylor & Francis, 1453-1458.
• Toll, D.G. & O’Dea, J. (2014), An XML data format for geotechnical data: AGSML4, in Toll, D.G., Zhu, H., Osman, A., Coombs, W, Li, X. & Rouainia, M. eds, 2nd International Conference on Information Technology in Geo-Engineering. Durham, Amsterdam: IOS Press (Millpress), 103-109.
• Murray, E.J., Toll, D.G. & Sivakumar, V. (2014), Interpretation of stresses and strains in unsaturated fine-grained soils, in Khalili, N., Russell, A. & Khoshghalb, A. eds, 1: 6th International Conference on Unsaturated Soils. Sydney, London: Taylor & Francis, 197-201.
• Hassan, A.A. & Toll, D.G. (2014), Investigation of the directional dependence of soil resistivity in cracking clays, in Khalili, N., Russell, A. & Khoshghalb, A. eds, 1: 6th International Conference on Unsaturated Soils. Sydney, London: Taylor & Francis, 137-142.
• Bland, J., Walthall, S.X. & Toll, D.G. (2014), The Development and Governance of the AGS Format for Geotechnical Data, in Toll, D.G., Zhu, H., Osman, A., Coombs, W, Li, X. & Rouainia, M. eds, 2nd International Conference on Information Technology in Geo-Engineering. Durham, Amsterdam: IOS Press (Millpress), 67-74.
• Hassan, A. & Toll, D.G. (2013), Electrical Resistivity Tomography for Characterizing Cracking of Soils, Geo-Congress 2013 Stability and Performance of Slopes and Embankments III. San Diego, California, Reston: ASCE, 818-827.
• Toll, D.G., Hassan, A.A., King, J.M. & Asquith, J.D. (2013), New devices for water content measurement, 2: 18th International Conference on Soil Mechanics and Geotechnical Engineering. Paris, Paris: Presses des Pont, 1199-1202.
• Mendes, J. & Toll, D.G. (2013), Influence of initial water content on the water retention behaviour of a sandy clay soil, 2: 18th International Conference on Soil Mechanics and Geotechnical Engineering. Paris, Paris: Presses des Pont, 1155-1158.
• Hossain, A.T.M.S. & Toll, D.G. (2012), Geotechnical Behaviour of Unsaturated Tropical Clay Soils of Dhaka, Bangladesh, in Mancuso, C., Jommi, C. & D’Onza F. eds, Unsaturated Soils: Research and Applications 1: 2nd European Conference on Unsaturated Soils. Naples, Italy, Springer, Naples, 309-316.
• Asquith, J.D., Toll, D.G. & Johnson, K.L. (2012), Design and Construction of Large Lysimeters for Monitoring Unsaturated Transport of Contaminants, in Mancuso, C., Jommi, C. & D’Onza F. eds, Unsaturated Soils: Research and Applications 2: 2nd European Conference on Unsaturated Soils. Naples, Italy, Springer, Naples, 447-453.
• Mendes, J, Toll, D.G. & Evans, F. (2012), A Double Cell Triaxial System for Unsaturated Soils Testing, in Mancuso, C., Jommi, C. & D'Onza F. eds, Unsaturated Soils: Research and Applications 1: 2nd European Conference on Unsaturated Soils. Naples, Italy, Springer, Naples, 5-10.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G., Augarde, C.E. & Evans, F.D. (2011), Advances in tensiometer-based suction control systems, in Alonso, E. & Gens, A. eds, Unsaturated Soils 1: 5th International Conference on Unsaturated Soils. Barcelona, Spain, CRC Press/Balkema, Leiden, 695-700.
• Javadi, A.A., Johari, A., Ahangar-Asr, A., Faramarzi, A., Toll, D.G. & Khalili, N. (2011), Prediction of the behaviour of unsaturated soils using evolutionary polynomial regression: An incremental approach, in Alonso, E. & Gens, A. eds, Unsaturated Soils 2: 5th International Conference on Unsaturated Soils. Barcelona, Spain, CRC Press/Balkema, Barcelona, 837-842.
• Toll, D.G & Ali Rahman, Z. (2010), Engineering Behaviour of Unsaturated Structured Soils, in Cameron, D. & Kaggwa, W. eds, Proc. 3rd International Conference on Problematic Soils 3rd International Conference on Problematic Soils. Adelaide, Australia, CI-Premier, Adelaide, 25-34.
• Javadi, A.A., Johari, A., Ahangar-Asr, A., Faramarzi, A. & Toll, D.G. (2010), A New Approach to Constitutive Modelling of Unsaturated Soils Using Evolutionary Polynomial Regression, in Buzzi, O., Fityus, S. & Sheng, D. eds, Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics 2: 4th Asia-Pacific Conference on Unsaturated Soils. Newcastle, Australia, Taylor & Francis Group, Newcastle, 661-666.
• Toll, D.G., Gallipoli, D., Augarde, C.E., De Gennaro, V., Mancuso, C., Tarantino, A., Vaunat, J. & Wheeler, S.J. (2010), The MUSE Network: Research Outcomes, in Buzzi, O., Fityus, S. & Sheng, D. eds, Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics 2: 4th Asia-Pacific Conference on Unsaturated Soils. Newcastle, Australia, Taylor & Francis Group, Newcastle, 935-943.
• Toll, D.G. (2009), International Data Standards for Geotechnical Engineering, in Hamza, M., Shahien, M. & El-Mossallamy, Y. eds, Proc. 17th International Conference on Soil Mechanics and Geotechnical Engineering, Alexandria, Egypt 17th International Conference on Soil Mechanics and Geotechnical Engineering. Alexandria, Egypt, IOS Press, Alexandria, 2690-2693.
• Javadi, A. A., Johari, A., Ahangar-Asr, A., Faramarzi, A. & Toll, D. G. (2009), Using Evolutionary Polynomial Regression in Modelling of Unsaturated Soils, Proc. 17th. Conference on Computational Mechanics (ACME-UK) 17th. Conference on Computational Mechanics (ACME-UK). Nottingham, UK, Nottingham, 353-356.
• Toll, D.G. (2009), Management of Geotechnical Data and Processes, in Hamza, M., Shahien, M. & El-Mossallamy, Y. eds, Proc. 17th International Conference on Soil Mechanics and Geotechnical Engineering, Alexandria, Egypt 17th International Conference on Soil Mechanics and Geotechnical Engineering. Alexandria, Egypt, IOS Press, Alexandria, 3360-3365.
• Jotisankasa, A., Kulsawan, B., Toll, D.G. & Rahardjo, H. (2008), Studies of Rainfall-induced Landslides in Thailand and Singapore, Unsaturated Soils: Advances in Geo-Engineering 1st European Conf. Unsaturated Soils. Durham, UK, CRC Press/Balkema, Durham, 901-907.
• Toll, D.G., Ali Rahman, Z. & Gallipoli, D. (2008), Critical State Conditions for an Unsaturated Artificially Bonded Soil, Unsaturated Soils: Advances in Geo-Engineering 1st European Conf. Unsaturated Soils. Durham, UK, CRC Press/Balkema, Durham, 435-440.
• Toll, D.G. (2008), International Data Exchange: The Future for Geo-engineering, 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG). Goa, India, Goa, 1958-1965.
• Toll, D.G. (2008), Representing Geo-Engineering Data from Instruments and Transducers, in Alshawabkeh, A.N. Reddy, K.R. & Khire, M.V. eds, Geotechnical Special Publication No. 179 GeoCongress 2008. New Orleans, USA, American Society of Civil Engineers, New Orleans LA, 581-588.
• Lourenço, S.D.N., Toll, D.G., Augarde, C.E., Gallipoli, D., Evans, F.D. & Medero, G. (2008), Evaluation of Suction Measurement by the Tensiometer and the Axis Translation Technique, Unsaturated Soils: Advances in Geo-Engineering 1st European Conf. Unsaturated Soils. Durham, UK, CRC Press/Balkema, Durham, 213-218.
• Hughes, P.N., Glendinning, S., Dixon, N., Dijkstra, T.A., Clarke, D., Smethurst, J., Powrie, W., Toll, D.G., Mendes, J. & Hughes, D.A.B. (2008), Field Testing and Modelling the Effects of Climate on Geotechnical Infrastructure – A Collaborative Approach, 1st International Conference on Transportation Geotechnics. Nottingham, UK, Nottingham.
• Mendes, J., Gallipoli, D., Toll, D.G., Augarde, C.E., Glendinning, S. & Hughes, P. (2008), The Effect of Climate Change on Infrastructure Embankments: The BIONICS Project, 11th Portuguese National Congress of Geotechnics & 6th Congresso Luso-Brasileiro de Geotecnia. Coimbra, Portugal, Coimbra.
• Karthikeyan, M., Toll, D.G. & Phoon, K.K. (2008), Prediction of Changes in Pore-water Pressure Response due to Rainfall Events, Unsaturated Soils: Advances in Geo-Engineering 1st European Conf. Unsaturated Soils. Durham, UK, CRC Press/Balkema, Durham, 829-834.
• Lourenço, S.D.N.,, Toll, D.G., Augarde, C.E., Gallipoli, D., Congreve, A., Smart, T. & Evans, F.D. (2008), Observations of unsaturated soils by Environmental Scanning Electron Microscopy in dynamic mode, in Toll, D.G., Augarde, C.E., Gallipoli, D. & Wheeler, S.J. eds, 1st European Conference on Unsaturated Soils, E-UNSAT 2008. Durham, UK, Taylor & Francis, Abingdon, Oxon, 145-150.
• Toll, D.G., Mendes, J., Augarde, C.E., Karthikeyan, M., Phoon, K.K., Gallipoli, D. & Lin K.Q. (2008), Effects of Climate Change on Slopes for Transportation Infrastructure, 1st International Conference on Transportation Geotechnics. Nottingham, UK, Nottingham.
• Mendes, J., Toll, D.G., Augarde, C.E. & Gallipoli, D. (2008), A System for Field Measurement of Suctions using High Capacity Tensiometers, in Toll, D.G., Augarde, C.E., Gallipoli, D. & Wheeler, S.J. eds, Unsaturated Soils: Advances in Geo-Engineering 1st European Conf. Unsaturated Soils. Durham, UK, CRC Press/Balkema, Durham, 219-225.
• Glendinning, S., Hughes, P.N., Hughes, D.A.B., Clarke, D., Smethurst, J., Powrie, W., Dixon, N., Dijkstra, T.A., Toll, D.G. & Mendes, J. (2008), Biological and Engineering Impacts of Climate on Slopes – Learning from Full-Scale, 10th International Symposium on Landslides and Engineered Slopes. Xian, P.R. China, Xi’an.

Conference Proceeding

• Toll, D.G., Phoon, K.K., Cheng, Y.G. & Karthikeyan, M. (2007). The Effect of Climate on Landslides in Singapore. Expert Symposium on Climate Change: Modelling, Impacts & Adaptations, Singapore, Research Publishing Services.
• Toll, D.G. (2007). Representing Slopes in XML. Proc. Specialized Session S02 of 11th Congress of the International Society for Rock Mechanics, Lisbon.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G., Evans, F.D. & Medero, G.M. (2007). Determination of the Soil Water Retention Curve with Tensiometers. Mechanics of Unsaturated Soils, Weimar, Germany, Springer.
• Toll, D.G., Ali Rahman, Z. & Gallipoli, D (2007). Towards Understanding the Behaviour of Unsaturated Bonded Soils. 3rd Asian Conference on Unsaturated Soils, Nanjing, P.R. China, Science Press.
• Chandler, R.J., Quinn, P.M., Beaumont, A.J., Evans, D.J. & Toll D.G. (2006). Combining the power of AGS and XML: AGSML the data format for the future. GeoCongress 2006: Geotechnical Engineering in the Information Technology Age, Atlanta, USA, American Society of Civil Engineers.
• Toll, D.G., Malandraki, V., Ali Rahman, Z. & Gallipoli, D. (2006). Bonded Soils: Problematic or Predictable?. 2nd International Conference on Problematic Soils, Malaysia, Ci-Premier.
• Martin, J. & Toll, D. (2006). The Development of a Data Structure for the Storage of Preliminary Site Investigation Data. 10th Congress of International Association of Engineering Geology and Environment, Nottingham, UK.
• Stenke, F., Toll, D.G. & Gallipoli, D. (2006). Comparison of Water Retention Curves for Clayey Soils using Different Measurement Techniques. 4th International Conference on Unsaturated Soils, Carefree, Arizona, USA, American Society of Civil Engineers.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G. & Evans, F.D. (2006). Development of a Commercial Tensiometer for Triaxial Testing of Unsaturated Soils. 4th International Conference on Unsaturated Soils, Carefree, Arizona, USA, American Society of Civil Engineers.
• Hossain, S. & Toll, D.G. (2006). Geomechanical Aspects of some Tropical Clay Soils from Dhaka, Bangladesh. 10th Congress of the International Aassociation of Engineering Geology an the Environment, Nottingham, UK.
• Gallipoli, D., Toll, D., Augarde, C., Tarantino, A., De Gennaro, V., Vaunat, J., Wheeler, S. & Mancuso, C. (2006). The MUSE Network: Sharing Research Expertise on Unsaturated Soils across Europe. 4th International Conference on Unsaturated Soils, Carefree, Arizona, USA, American Society of Civil Engineers.
• Lourenço, S.D.N., Gallipoli, D., Toll, D. & Evans, F. (2006). Use of Tensiometers for the Measurement of Soil Suction. 10th Congresso Nacional de Geotecnia, Lisbon.
• Walker, S., Gallipoli, D. & Toll, D.G. (2005). The Effect of Structure on the Water Retention of Soil Tested using Different Methods of Suction Measurement. Proc. International Symposium on Advanced Experimental Unsaturated Soil Mechanics, Trento, Italy, Taylor & Francis.
• Stephens, S.T., Gallipoli, D. & Toll, D.G. (2004). Influence of Initial Water Content on the Strength of a Statically Compacted Clay. 5th Brazilian Symposium on Unsaturated Soils, São Carlos, Brazil.
• Toll, D.G. (2004). The Critical State in Unsaturated Soils. 3rd International Conference on Unsaturated Soils, Recife, Brazil, Swets & Zeitlinger.
• Gallipoli, D., Stephens, S.T. & Toll, D.G. (2004). L'effetto del contenuto d'acqua iniziale sulle proprieta meccaniche di un argilla costipata (the effect of initial water content on the mechanical properties of compacted clay). Incontro Annuale dei Ricercatori di Geotecnica (IARG2004), Trento, Italy.
• Toll, D.G. (2003). On the Shear Strength of Unsaturated Soils. International Conference on Problematic Soils, Nottingham, UK, CI-Premier.
• Toll, D.G. & Hossain, A.T.M.S. (2003). Pre-failure behaviour of the tropical clay soils of Dhaka, Bangladesh. 3rd Int. Conf. on Deformation Characteristics of Geomaterials, Lyon, France, A A Balkema Publishers.
• Tsaparas, I. & Toll, D.G. (2003). Factors affecting Infiltration into an Unsaturated Soil Slope. 2nd Asian Conference on Unsaturated Soils (UNSAT-ASIA 2003), Osaka, Japan.
• Tsaparas, I. & Toll, D.G. (2002). Numerical Analysis of Infiltration into Unsaturated Residual Soil Slopes. 3rd International Conference on Unsaturated Soils, Recife, Brazil, Swets & Zeitlinger.
• Hatipoglu, B, Toll, DG, Giolas, A & Incecik, M (2001). Knowledge-based geotechnical correlation systems applied to slope stability. 15th International Conference on Soil Mechanics and Geotechnical Engineering, Istanbul, Turkey, A A Balkema.
• Toll, DG (2001). Computers and geotechnical engineering: A review. 8th Int. Conf. on Civil and Structural Engineering Computing, Eisenstadt, Austria, SAXE-COBURG PUBLICATIONS.
• Toll, DG, Tsaparas, I & Rahardjo, H (2001). The influence of rainfall sequences on negative pore-water pressures within slopes. 15th International Conference on Soil Mechanics and Geotechnical Engineering, Istanbul, Turkey, A A Balkema.
• Toll, DG, Ong, BH & Rahardjo, H (2000). Triaxial testing of unsaturated samples of undisturbed residual soil from Singapore. 1st Asian Conference on Unsaturated Soils, Singapore, A A Balkema.
• Tsaparas, I., Toll, D.G. & Rahardjo, H. (2000). Influence of rainfall sequences on the seepage conditions within a slope: A parametric study. 1st Asian Conference on Unsaturated Soils, Singapore, A A Balkema.
• Ling, N.L. & Toll, D.G. (2000). Suction and strength behaviour of unsaturated calcrete. 1st Asian Conference on Unsaturated Soils, Singapore, A A Balkema.
• Wong, J.C., Rahardjo, H., Toll, D.G. & Leong, E.C. (2000). Shear strength of undisturbed Bukit Timah granitic soils under infiltration conditions. 1st Asian Conference on Unsaturated Soils, Singapore, A A Balkema.
• Toll, DG (2000). Information technology applications in geotechnical education and vocational training. 12th European Conference Soil Mechanics and Geotechnical Engineering, Amsterdam, The Netherlands, A A Balkema.
• Jaksa, M.B., Davison, L.R. & Toll, D.G. (2000). Computer aided learning in geotechnical engineering education. GeoEng 2000, Melbourne, Australia, A A Balkema.
• Toll, DG (1999). Using Excel macros for data processing. Civil Comp Press.
• Toll, DG (1999). A data acquisition and control system for geotechnical testing. Civil Comp Press.
• Toll, DG (1998). A review of artificial intelligence systems for site characterization. A A Balkema.
• Toll, DG (1996). Discussion on session 2: Data management. THOMAS TELFORD SERVICES LTD.
• Oliver, AJ & Toll, DG (1996). A computer system for site investigation data management and interpretation. Thomas Telford Services Ltd.
• Toll, DG & Barr, RJ (1995). Computer-aided learning for geotechnical engineering. CIVIL COMP PRESS.
• Toll, DG & Giolas, A (1995). A knowledge-based System for estimation of geotechnical properties. CIVIL COMP PRESS.
• Oliver, AJ & Toll, DG (1995). An object-oriented approach to site investigation data management and interpretation. CIVIL COMP PRESS.
• Toll, D.G. (1994). Interpreting Site Investigation Data Using a Knowledge-Based System. A A Balkema.
• Malandraki, V. & Toll, D.G. (1994). Yielding of a Weakly Bonded Artificial Soil. A A Balkema.
• Toll, D.G. (1993). A Computer Control System For Stress Path Triaxial Testing. Civil Comp Press.
• Toll, D.G. & Malandraki, V. (1993). Triaxial Testing of a Weakly Bonded Soil. A A Balkema.
• Vaptismas, N. & Toll, D.G. (1993). Interpreting Borehole Information. Civil Comp Press.
• Moula, M. & Toll, D.G. (1993). Representing Geotechnical Knowledge - Soils and Field Tests. Civil Comp Press.
• Toll, D.G., Moula, M. & Vaptismas, N. (1991). Representing the Engineering Description of Soils in Knowledge Based Systems. Computational Mechanics Publications Ltd.
• Toll, D.G., Vaptismas, N. & Moula, M. (1991). Comparing Soils Using Knowledge Based Systems. Civil Comp Press.
• Toll, D.G. & Attewell, P.B. (1990). Use of an Expert System in Site Investigation. A A Balkema.
• Grace, H. & Toll, D.G. (1989). The Improvement of Roads in Developing Countries to Bituminous Standards Using Naturally-Occurring Laterites. 3rd International Conference on Unbound Aggregates in Roads, Buttorworth-Heinemann.

Edited book

• Winter, M.G., Smith, D.M., Eldred, P.J.L. & Toll, D.G. (2015). Geotechnical Engineering for Infrastructure and Development, XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh. London: ICE Publishing.
• Osman, A.S. & Toll, D.G. (2015). Proceedings of the 24th European Young Geotechnical Engineering. Durham University.
• Toll, D.G., Zhu, H., Osman, A., Coombs, W, Li, X. & Rouainia, M. (2014). Information Technology in Geo-Engineering. 2nd International Conference on Information Technology in Geo-Engineering. The Netherlands: IOS Press (Millpress).
• Huat, B.B.K, Toll, D.G. & Prasad, A. (2012). Handbook of Tropical Residual Soils Engineering. CRC Press, Leiden.
• Toll, D.G., Zhu, H. & Li, X. (2010). Information Technology in Geo-Engineering. 1st International Conference on Information Technology in Geo-Engineering, Shanghai. The Netherlands: IOS Press (Millpress).
• Toll, D.G., Augarde, C.E., Gallipoli, D. & Wheeler, S.J. (2008). Unsaturated Soils: Advances in Geo-Engineering. Proc. 1st European Conference on Unsaturated Soils. Leiden: CRC Press/Balkema (Taylor & Francis).
• Liong, S.Y., Phoon, K.K. & Toll, D.G. (2007). Climate Change: Modelling, Impacts and Adaptions. Singapore: Research Publishing Services.
• Toll, D.G. & Chen, Z.Y. (2007). Rock Mechanics Data: Representation and Standardisation. Proc. Specialized Session S02 of 11th Congress of the International Society for Rock Mechanics, Lisbon.
• Toll, D.G. (2006). Proc. Geo-Singapore 2006: International Conference on Geotechnical Engineering. Singapore: Ci-Premier.
• Toll, D.G. (2001). Unsaturated soil concepts and their application in geotechnical practice. Dordrecht: Kluwer Academic.
• Rahardjo, H., Toll, D.G. & Leong, E.C. (2000). Unsaturated Soils for Asia. Rotterdam: A A Balkema.

Edited Journal

• Toll, D.G. & Caicedo, B. (2015). Special Issue on Lateritic and Tropical Geomaterials in Construction of Transportation Infrastructures. Transportation Geotechnics, 5 Elsevier.

Journal Article

• Azizi, Arash, Kumar, Ashutosh & Toll, David G. (2023). Coupling cyclic and water retention response of a clayey sand subjected to traffic and environmental cycles. Géotechnique 73(5): 401-417.
• Azizi, Arash, Kumar, Ashutosh & Toll, David Geoffrey (2023). The bounding effect of the water retention curve on the cyclic response of an unsaturated soil. Acta Geotechnica 18(4): 1901–1917.
• Pradhan, S., Toll, D.G., Rosser, N.J. & Brain, M.J. (2022). An investigation of the combined effect of rainfall and road cut on landsliding. Engineering Geology 307: 106787.
• Kerr, Heather C., Johnson, Karen L. & Toll, David G. (2022). Reusing Fe water treatment residual as a soil amendment to improve physical function and flood resilience. SOIL 8(1): 283-295.
• Gaspar, T.A.V., Jacobsz, S.W., Heymann, G., Toll, D.G., Gens, A. & Osman, A.S. (2022). The mechanical properties of a high plasticity expansive clay. Engineering Geology 303: 106647.
• Kumar, A., Azizi, A. & Toll, D.G. (2022). Application of suction monitoring for cyclic triaxial testing of compacted soils. Journal of Geotechnical and Geoenvironmental Engineering 148(4).
• S. Grebby, A. Sowter, J. Gluyas, D. Toll, D. Gee, A. Athab & R. Girindran (2021). Advanced analysis of satellite data reveals ground deformation precursors to the Brumadinho Tailings Dam collapse. Communications Earth & Environment 2: 2.
• Tinoco, Joaquim, Parente, Manuel, Gomes Correia, António, Cortez, Paulo & Toll, David (2021). Predictive and prescriptive analytics in transportation geotechnics: Three case studies. Transportation Engineering 5: 100074.
• Stirling, R. A., Toll, D. G., Glendinning, S., Helm, P. R., Yildiz, A., Hughes, P. N. & Asquith, J. D. (2021). Weather-driven deterioration processes affecting the performance of embankment slopes. Géotechnique 71(11): 957-969.
• Kumar, Ashutosh, Hughes, Paul N., Sarhosis, Vasilis, Toll, David, Wilkinson, Sean, Coningham, Robin, Acharya, Kosh Prasad, Weise, Kai, Joshi, Annie, Davis, Christopher, Kunwar, Ram Bahadur & Maskey, Prem Nath (2020). Experimental, numerical and field study investigating a heritage structure collapse after the 2015 Gorkha earthquake. Natural Hazards 101(1): 231-253.
• Liu, Guanshi, Toll, D. G., Kong, Lingwei & Asquith, J. D. (2020). Matric Suction and Volume Characteristics of Compacted Clay Soil under Drying and Wetting Cycles. Geotechnical Testing Journal 43(2): 464-479.
• Davis, C.E., Coningham, R.A.E., Acharya, K.P., Kunwar, R.B., Forlin, P., Weise, K., Maskey, P.N., Joshi, A., Simpson, I.A., Toll, D., Wilkinson, S., Hughes, P., Sarhosis, V., Kumar, A. & Schmidt, A. (2020). Identifying archaeological evidence of past earthquakes in a contemporary disaster scenario: Case-studies of damage, resilience and risk reduction from the 2015 Gorkha Earthquake and past seismic events within the Kathmandu Valley UNESCO World Heritage Property (Nepal). Journal of Seismology 24(4): 729-751.
• Coningham, R.A.E., Acharya, K.P. Barclay, C.P., Barclay, R., Davis, C.E., Graham, C., Hughes, P.N., Joshi, A., Kelly, L., Khanal, S., Kilic, A., Kinnaird, T., Kunwar, R.B., Kumar, A., Maskey, P.N., Lafortune-Bernard, A., Lewer, N., McCaughie, D., Mirnig, N., Roberts, A., Sarhosis, V., Schmidt, A., Simpson, I.A., Sparrow, T., Toll, D.G., Tully, B., Weise, K., Wilkinson, S. & Wilson, A. (2019). Reducing Disaster Risk to Life and Livelihoods by Evaluating the Seismic Safety of Kathmandu’s Historic Urban Infrastructure: enabling an interdisciplinary pilot. Journal of the British Academy 7(2): 45-82.
• Mendes, J., Gallipoli, D., Tarantino, A. & Toll, D. (2019). On the development of an ultra-high-capacity tensiometer capable of measuring water tensions to 7 MPa. Géotechnique 69(6): 560-564.
• Toll, David G, Rahim, M Syazwan Md, Karthikeyan, M & Tsaparas, Ilias (2019). Soil–atmosphere interactions for analysing slopes in tropical soils in Singapore. Environmental Geotechnics 6(6): 361-372.
• Tinoco, Joaquim, Gomes Correia, A., Cortez, Paulo & Toll, David G. (2018). Data-Driven Model for Stability Condition Prediction of Soil Embankments Based on Visual Data Features. Journal of Computing in Civil Engineering 32(4): 04018027.
• Tang, A. M., Hughes, P. N., Dijkstra, T. A., Askarinejad, A., Brenčič, M., Cui, Y. J., Diez, J. J., Firgi, T., Gajewska, B., Gentile, F., Grossi, G., Jommi, C., Kehagia, F., Koda, E., ter Maat, H. W., Lenart, S., Lourenco, S., Oliveira, M., Osinski, P., Springman, S. M., Stirling, R., Toll, D. G. & Van Beek, V. (2018). Atmosphere–vegetation–soil interactions in a climate change context; impact of changing conditions on engineered transport infrastructure slopes in Europe. Quarterly Journal of Engineering Geology and Hydrogeology 51(2): 156-168.
• Ali Rahman, Z., Toll, D. G. & Gallipoli, D. (2018). Critical state behaviour of weakly bonded soil in drained state. Geomechanics and Geoengineering 13(4): 233-245.
• Tinoco, Joaquim, Gomes Correia, A., Cortez, Paulo & Toll, David G. (2018). Stability Condition Identification of Rock and Soil Cutting Slopes Based on Soft Computing. Journal of Computing in Civil Engineering 32(2): 04017088.
• Toll, D. G. & Ali Rahman, Z. (2017). Critical state shear strength of an unsaturated artificially cemented sand. Géotechnique 67(3): 208-215.
• Winter, Mike G., Smith, Derek M., Eldred, Peter J. L., Toll, David G. & Chrimes, Mike (2016). Review of the XVI European Conference on Soil Mechanics and Geotechnical Engineering. Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 169(5): 455.
• Mendes, J. & Toll, D.G. (2016). Influence of initial water content on the mechanical behaviour of an unsaturated sandy clay soil. International Journal of Geomechanics 16(6): D4016005.
• Toll, D.G. (2015). California Bearing Ratio tests on a lateritic gravel from Kenya. Transportation Geotechnics 5: 59-67.
• D’Onza, F., Wheeler, S.J., Gallipoli, D., Barrera Bucio, M., Hofmann, M., Lloret-Cabot, M., Lloret Morancho, A., Mancuso, C., Pereira, J.-M., Romero Morales, E., Sánchez, M., Solowski, W., Tarantino, A., Toll, D.G. & Vassallo, R. (2015). Benchmarking selection of parameter values for the Barcelona basic model. Engineering Geology 196: 99-118.
• Cassar, J., Winter, M.G., Marker, B.R., Bromhead, E.N., Smith, J.W.N., Toll, D.G., Walton, N.R.G., Entwisle, D.C. & Dijkstra, T.A. (2013). Introduction to the Stone Cycle and the Conservation of Historic Buildings. Quarterly Journal of Engineering Geology and Hydrogeology 46(4): 363-366.
• Toll, D.G., Lourenço, S.D.N. & Mendes, J. (2013). Advances in suction measurements using high suction tensiometers. Engineering Geology 165: 29-37.
• Toll, D.G., Mendes, J., Hughes, P.N., Glendinning, S. & Gallipoli, D. (2012). Climate Change and the Role of Unsaturated Soil Mechanics. Geotechnical Engineering 43(1): 76-82.
• Lourenco, S.D.N., Gallipoli, D., Augarde, C.E., Toll, D.G., Fisher, P.C. & Congreve, A. (2012). Formation and evolution of water menisci in unsaturated granular media. Geotechnique 62 (3): 193-199.
• Javadi, A.A., Ahangar-Asr, A., Johari, A., Faramarzi, A. & Toll, D. (2012). Modelling stress–strain and volume change behaviour of unsaturated soils using an evolutionary based data mining technique, an incremental approach. Engineering Applications of Artificial Intelligence
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G., Augarde, C.E. & Evans, F. (2011). A new procedure for the determination of the Soil Water Retention Curves by continuous drying using high suction tensiometers. Canadian Geotechnical Journal 48(2): 327-335.
• Tarantino, A., Gallipoli, D., Augarde, C.E., De Gennaro, V., Gomez, R., Laloui, L., Mancuso, C., McCloskey, G., Munoz, J., Pereira, J-M., Peron, H., Pisoni, G., Romero, E., Raveendiraraj, A., Rojas, J.C., Toll, D.G., Tombolato, S. & Wheeler, S. (2011). Benchmark of experimental techniques for measuring and controlling suction. Géotechnique 61(4): 303–312.
• Lourenço, S.D.N., Gallipoli, D., Augarde, C.E., Toll, D.G., & Evans, F.D. (2011). Towards a Tensiometer Based Suction Control System for Laboratory Testing of Unsaturated Soils. Geotechnical Testing Journal 34(6): 755-764.
• Toll, D.G., Lourenço, S.D.N. Mendes, J. Gallipoli, D. Evans, F.D., Augarde, C.E. Cui, Y.J. Tang, A.M. Rojas Vidovic, J.C. Pagano, L. Mancuso, C. Zingariello, C. & Tarantino, A. (2011). Soil suction monitoring for landslides and slopes. Quarterly Journal of Engineering Geology and Hydrogeology 44: 23-33.
• Ali Rahman, Z., Toll, D.G., Gallipoli, D. & Taha, M.R. (2010). Micro-structure and Engineering Behaviour of Weakly Bonded Soil. Sains Malaysiana 36(6): 989–997.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G., Evans, F.D., Leong, E.C., Rahardjo, H. & He, L. (2010). Calibration of high suction tensiometers - Discussion. Geotechnique 60(3): 233-234.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G. & Evans, F.D. (2009). On the Measurement of Water Pressure in Soils with High Suction Tensiometers. Geotechnical Testing Journal 32(6): 565-57.
• Jaquin, P.A., Augarde, C.E., Gallipoli, D. & Toll, D.G. (2009). The strength of unstabilised rammed earth materials. Géotechnique 59(5): 487-490
• Hughes, P.N., Glendinning, S., Mendes, J., Parkin, G., Toll, D.G., Gallipoli, D. & Miller, P. (2009). Full-scale testing to assess climate effects on embankments. Engineering Sustainability: Proc. Institution of Civil Engineers 162(2): 67-79.
• Fyson, M. & Toll, D.G. (2008). Case-Based System for Slope Design. Computers and Geotechnics 35(3): 468-478.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G., Augarde, C., Evans, F. & Medero, G. (2008). Calibrations of a high-suction tensiometer. Géotechnique 58(8): 659-668.
• Tarantino, A., Ridley, A.M. & Toll, D.G. (2008). Field measurement of suction, water content, and water permeability. Geotechnical and Geological Engineering 26(6): 751-782.
• Lourenço, S.D.N., Gallipoli, D., Toll, D.G., Evans, F.D. & Medero, G.M. (2007). Discussion of “The development of a suction control system for a triaxial apparatus”, A. Jotisankasa, M.Coop and A. Ridley. Geotechnical Testing Journal 30(4): 738-741.
• Toll, D.G. (2007). Geo-Engineering Data: Representation and Standardisation. Electronic Journal of Geotechnical Engineering
• Haeri, S.M., Hamidi, A. Hosseini, S.M. Asghari, E. & Toll, D.G. (2006). Effect of Cement Type on the Mechanical Behavior of a Gravelly Sand. Geotechnical and Geological Engineering 24(2): 335-360.
• Martin, J.C. & Toll, D.G. (2006). The Development of a Knowledge-Based System for the Preliminary Investigation of Contaminated Land. Computers and Geotechnics 33(2): 93-100.
• Haeri, SM, Hosseini, SM, Toll, DG & Yasrebi, SS (2005). The behaviour of an artificially cemented sandy gravel. Geotechnical and Geological Engineering 23(5): 537-560.
• Hosseini, S.M., Haeri, S.M. & Toll, D.G. (2005). Behaviour of gravelly sand using critical state concepts. Scientia Iranica 12(2): 167-177.
• Asghari, E, Toll, DG & Haeri, DG (2004). Effect of cementation on the shear strength of Tehran gravelly sand. Journal of Sciences, Islamic Republic of Iran 15(1): 65-71.
• Toll, D.G. & Ong, B.H. (2004). Critical state parameters for an unsaturated residual sandy soil - Discussion. Géotechnique 54(1): 69 - 71.
• Asghari, E, Toll, DG & Haeri, SM (2003). Triaxial behaviour of a cemented gravelly sand, Tehran Alluvium. Geotechnical and Geological Engineering 21(1): 1-28.
• Toll, D. G. & Cubitt, A. C. (2003). Representing geotechnical entities on the world wide web. Advances in engineering software 34(11-12): 729-736.
• Tsaparas, I, Rahardjo, H, Toll, D & Leong, EC (2003). Infiltration characteristics of two instrumented residual soil slopes. Canadian Geotechnical Journal 40(5): 1012-1032.
• Toll, D.G. & Shields, R. (2003). A Web-based Data Format for Ground Investigation Data. Electronic Journal of Geotechnical Engineering 8(D).
• Topping, BHV & Toll, DG (2003). Special issue on Civil-Comp 2001. Advances In Engineering Software 34(11-12): 655-656.
• Toll, D. G. & Ong, B. H. (2003). Critical-state parameters for an unsaturated residual sandy clay. Geotechnique 53(1): 93-103.
• Tsaparas, I., Rahardjo, H., Toll, D. G. & Leong, E. C. (2002). Controlling parameters for rainfall-induced landslides. Computers and geotechnics 29(1): 1-27.
• Toll, DG & Barr, RJ (2001). A decision support system for geotechnical applications. Computers And Geotechnics 28(8): 575-590.
• Toll, DG (2001). Rainfall-induced landslides in Singapore. Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 149(4): 211-216.
• Rahardjo, H., Li, X.W. Toll, D.G. & Leong, E.C. (2001). The effect of antecedent rainfall on slope stability. Geotechnical and Geological Engineering 19(3-4): 371 - 399.
• Aung, K.K., Rahardjo, H., Leong, E.C. & Toll, D.G. (2001). Relationship between porosimetry measurement and soil–water characteristic curve for an unsaturated residual soil. Geotechnical and Geological Engineering 19(3-4): 401 - 416.
• Toll, DG, Walthall, S & Sharma, S (2001). Format for geotechnical data exchange in the United Kingdom. Transportation Research Record (1755): 26-33.
• Wong, JC, Rahardjo, H, Toll, DG & Leong, EC (2001). Modified triaxial apparatus for shearing-infiltration test. Geotechnical Testing Journal 24(4): 370-380.
• Malandraki, V. & Toll, D. G. (2001). Triaxial tests on weakly bonded soil with changes in stress path. Journal of geotechnical and geoenvironmental engineering 127(3): 282-291.
• Malandraki, V & Toll, D (2000). Drained probing triaxial tests on a weakly bonded artificial soil. Geotechnique 50(2): 141-151.
• Giolas, A & Toll, DG (1999). A knowledge-based system for correlations using object hierarchies. Computers And Geotechnics 25(3): 123-140.
• Toll DG & A. Giolas (1998). Representing geotechnical properties in a knowledge-based system. Advances in Engineering Software 29: 627-636.
• Toll, DG & Barr, RJ (1998). A computer-aided learning system for the design of foundations. Advances In Engineering Software 29(7-9): 637-643.
• Thompson, L & Toll, D (1997). Evaluating students' and tutors' perceptions of computer-assisted learning materials: A case study. Innovations In Education And Training International 34(4): 272-280.
• Malandraki, V. & Toll, D.G. (1996). The definition of yield for bonded materials. Geotechnical and Geological Engineering 14(1): 67 - 82.
• Toll DG (1996). Artificial intelligence applications in geotechnical engineering. Electronic Journal of Geotechnical Engineering 1: 1-11.
• Moula, M, Toll, DG & Vaptismas, N (1995). Knowledge-based systems in geotechnical engineering. Geotechnique 45(2): 209-221.
• Toll, DG (1995). The role of a knowledge-based system in interpreting geotechnical information. Geotechnique 45(3): 525-531.
• Toll, D.G. (1991). Towards understanding the behaviour of naturally-occurring road construction materials. Geotechnical and Geological Engineering 9(3-4): 197 - 217.