Ian Johnston

Discussion of "centrifuge Tests on Rock-Socketed Piles: Effect of Socket Roughness on Shaft Resistance" by J. G. Gutiérrez-Ch, G. Song, C. M. Heron, A. Marshall, and R. Jimenez

IW Johnston

Journal article  |  2022  |  Journal of Geotechnical and Geoenvironmental Engineering

Evaluation of design methods for side-resistance-only rock-socketed piles

IW Johnston

Journal article  |  2022  |  Canadian Geotechnical Journal

The ability of three methods to predict the load–settlement response of rock-socketed piles was examined in a recent paper. The pi..

Design charts for piles socketed into rock

Ian Johnston

Conference Proceedings  |  2022  |  Proceedings of 20th International Conference on Soil Mechanics and Geotechnical Engineering

A method for the design of piles socketed into rock was published over 40 years ago by Williams et al. (1980). The method appears ..

Comparative costs of ground source heat pump systems against other forms of heating and cooling for different climatic conditions

GR Aditya, O Mikhaylova, GA Narsilio, IW Johnston

Journal article  |  2020  |  Sustainable Energy Technologies and Assessments

Ground source heat pump (GSHP) systems can provide cost effective and sustainable heating and cooling for buildings while using co..

Revisiting Methods for the Design of Rock Socketed Piles

IW Johnston

Journal article  |  2020  |  Journal of Geotechnical and Geoenvironmental Engineering

The three principal methods specifically developed for the design of rock socketed piles were originally presented in the 1980s. O..

The importance of boundary conditions on the modelling of energy retaining walls

N Makasis, GA Narsilio, A Bidarmaghz, IW Johnston, Y Zhong

Journal article  |  2020  |  Computers and Geotechnics

Shallow geothermal technologies have proven to efficiently provide renewable energy for space heating and cooling. Recently, signi..

Full-Scale Instrumented Residential Ground Source Heat Pump Systems in Melbourne, Australia

GR Aditya, GA Narsilio, IW Johnston, MM Disfani

Conference Proceedings  |  2019  |  ENERGY GEOTECHNICS, SEG-2018

Ground-source heat pump (GSHP) systems typically show higher efficiencies than conventional systems for space heating and cooling ..

The Application of Retaining Walls and Slabs as Energy Structures in Underground Train Stations

Nikolas Makasis, Guillermo A Narsilio, Asal Bidarmaghz, Ian W Johnston

Conference Proceedings  |  2019  |  ENERGY GEOTECHNICS, SEG-2018

Shallow geothermal technologies have proven to efficiently provide renewable energy for heating and cooling. Recently much attenti..

Financial assessment of ground source heat pump systems against other selected heating and cooling systems for Australian conditions

G Riyan Aditya, Olga Mikhaylova, Guillermo A Narsilio, Ian W Johnston

Conference Proceedings  |  2018  |  Proceedings of the IGSHPA Research Track 2018

Investigation of the effect of seasonal variation in ground temperature on thermal response tests

Linden Jensen-Page, Guillermo A Narsilio, Asal Bidarmaghz, Ian W Johnston

Journal article  |  2018  |  RENEWABLE ENERGY

Economical design of Ground Heat Exchangers (GHEs) relies significantly on accurate estimations of ground thermal properties, incl..