Aris Theophilou

Aris Theophilou

BEng (Hons) MEng (Structures) MEng (Geotechnics) PhD CEng MICE

Aris Theophilou has over 13 years of experience in Civil/ Structural/ Temporary Works Engineering consulting. He participated in over 100 projects ranging from tall/public buildings, airports, bridges, tide/flood protection, desalination plants, water and wastewater distribution. His specializations are the earthquake-resistant design of concrete structures, and temporary works design.



  • University of Surrey, PhD in Structural Earthquake Engineering, 2008-2014. Thesis title: “A Ground Motion Selection and Modification Method Suitable for the Probabilistic Seismic Response Assessment of Building Structures”.
  • Massachusetts Institute of Technology, MEng in Geotechnical Engineeering, 2000-2001.
  • Princeton University, MEng in  Structural Engineering, 1998-1999.
  • University College London, BEng (Hons) in Civil Engineering, 1995-1998.


Professional Experience

Balfour Beatty (UK), Senior Temporary Works Designer, May 2016-November 2017

Carried out a number of temporary works designs that include temporary structure shoring of buildings and bridges, cofferdam propping, excavation shaft shoring, slope stability analysis, crane installations, piling platforms, falsework design, hoardings, etc. Participated in various projects at Heathrow Airport, the Eight2O (Thames Water) project, the Thames Tideway at Carnwath project, the Box Encapsulation Plant at Sellafield, and the Thames Estuary Asset Management to 2100 project.

O’Halloran & O’Brien (UK), Technical Manager, April 2015-April 2016

Responsible for the management of the technical office, reporting directly to the Director of Operations. The office primarily developed temporary works designs, such as excavation shoring, slope stability analysis, ground bearing capacity analysis, piling platforms, tower crane foundations, underpinning design, falsework design, structural design and structural shoring for temporary works supports, hoardings, etc. Also carried out precast section design, and some permanent structures. Used extensively British Standards, such as BS 5975, and European standards, such as the Eurocode.

J&A Theophilou Consulting Engineers (Cyprus), September 2002-April 2015

Involved in the structural design of multi-storey buildings, such as apartment blocks, schools, government buildings, hotels. Was also involved in the structural design of water-retaining structures, and in the condition and earthquake-resistant capacity assessment of existing buildings. In the majority of the projects the structural type was reinforced concrete casted in-situ, the rest being steelwork. All work was carried out to European, British, and American standards, such as the Eurocode, BS 8110, BS 5950, and ACI-318.

Dewberry, Inc. Bridge Engineer, September 2001-August 2002

Involved in the seismic assessment and retrofit of a multipsan bridge over Neponset River in Boston, and in the condition assessment of other bridges in Boston.

Teaching Experience

  • University of Surrey, Associate Lecturer, 2010-2011. Taught the module of Earthquake Engineering.


Professional Qualifications

  • Member of the Institution of Civil Engineers, UK.
  • Chartered Engineer, UK.
  • Graduate Member of the Institution of Structural Engineers, UK.
  • Associate Member of the Higher Education Academy, UK.
  • Professional Civil Engineer, Cyprus.



  1. Theophilou A (2018). A ground motion selection and modification method through stratified sampling. Bulletin of Earthquake Engineering (online).
  2. Theophilou A., Chryssanthopoulos M., Kappos A.J. (2017) A vector-valued intensity measure incorporating normalized spectral area. Bulletin of Earthquake Engineering 15:249-270.
  3. Theophilou A., Chryssanthopoulos M. (2011) A ground motion record selection procedure utilizing a vector-valued intensity measure for optimized incremental dynamic analysis, International Conference in Applied Statistics and Probability in Civil Engineering, Switzerland.
  4. Theophilou A. (2008) Computational earthquake-resistant design of reinforced concrete structures to Eurocode, 3rd Panhellenic Conference in Earthquake Engineering and Technical Seismology.