1. Address: 59, 3 rd September Str. GR 10433, Athens, Greece e-mails: info@odotechniki.gr, odotechniki@odotechniki.grinfo@odotechniki.grodotechniki@odotechniki.gr Tel. +30 210 8228052, +30 210 8222127, Fax. +30 210 8233003 ODOTECHNIKI LTD CONSULTING ENGINEERS www.odotechniki.grUNDERGROUND WORKS DESIGNMODELLINGANALYSISCONSTRUCTION FOLLOW UP

2. Design, Consulting, Construction Follow Up and Subcontracting Services on: ODOTECHNIKI LTD CONSULTING ENGINEERS www.odotechniki.gr Address: 59, 3 rd September Str. GR 10433, Athens, Greece e-mails: info@odotechniki.gr, odotechniki@odotechniki.grinfo@odotechniki.grodotechniki@odotechniki.gr Tel. +30 210 8228052, +30 210 8222127, Fax. +30 210 8233003 State-of-the-art modelling and analysis; Value Engineering solutions; Design reviews and independent checks; Design of tunnels and underground works; Design of bridges and steel structures; Design of buildings; Design of retaining structures; Design of foundations, embankments, reinforced soil structures, cuts, deep excavations; Analysis and stabilization design of landslides and failures; Analysis of rock fall and rock fall barriers design; Programming and evaluation of geotechnical investigations and monitoring; Geological & geotechnical interpretation reports; Risk analysis in geotechnical and structural projects; CAD services, providing drawings preparation, reinforcement tables and detailing. Geotechnical & Structural experts

3. ODOTECHNIKI LTD – CONSULTING ENGINEERS UNDERGROUND WORKS DESIGN OF MAJOR PROJECTS STATE OF THE ART DESIGN, MODELLING, ANALYSIS CONSTRUCTION FOLLOW-UP AND CONSULTING

4. ODOTECHNIKI LTD – CONSULTING ENGINEERS DESIGN OF MAJOR PROJECTS PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

5. ODOTECHNIKI LTD – CONSULTING ENGINEERS ATTIKO METRO (Athens metro), Geotechnical Consulting for lines 2 & 3, (constructed). ATTIKI ODOS (Athens ring road), geotechnical-structural design of bridges, retaining structures, cut & covers, tunnels, foundations, buildings, urban development projects, (constructed). EGNATIA ODOS, 700km major highway in northern Greece, geotechnical-structural design of tunnels, bridges, cut & covers, tunnels, special retaining structures, foundations, high embankments, cuts, landslide rehabilitation, (constructed). ANCIENT OLYMPIA RING ROAD, geotechnical-structural design, bridges, cut & covers, tunnels, special retaining structures, foundations, high embankments, (constructed). KORINTHOS-TRIPOLI-KALAMATA Highway, geotechnical-structural design of bridges, cut & covers, tunnels, special retaining structures, foundations, high embankments, cuts, landslide rehabilitation, (under construction). High speed RAILWAY KORINTHOS-PATRAS, geotechnical-structural design of bridges, cut & covers, tunnels, special retaining structures, foundations, (under construction). ATHENS-THESSALONIKI Highway (STYLIDA ring road), geotechnical-structural design of bridges, tunnels, special retaining structures, (under construction). North Highway of Crete island, geotechnical-structural design of bridges, cut & covers, tunnels, special retaining structures, foundations, (design in progress). THESSALONIKI external peripheral highway, geotechnical-structural design of tunnels, cut & covers, special retaining structures, (design in progress). Construction follow up consulting for EGNATIA TUNNELS: Veria - Polymilos section, (constructed). Construction follow up consulting fro ANCIENT OLYMPIA RING ROAD, (constructed). Construction follow up consulting for TRIPOLI-KALAMATA Highway, (constructed). PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

6. ODOTECHNIKI LTD – CONSULTING ENGINEERS ATTIKO METRO – ATHENS, GREECE – GEOTECHNICAL CONSULTING SERVICES PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

7. ODOTECHNIKI LTD – CONSULTING ENGINEERS ATTIKI ODOS – ATHENS, GREECE PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

8. ODOTECHNIKI LTD – CONSULTING ENGINEERS EGNATIA ODOS – NORTHERN GREECE PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

9. ODOTECHNIKI LTD – CONSULTING ENGINEERS ANCIENT OLYMPIA RING ROAD – PELOPONNESE, GREECE PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

10. ODOTECHNIKI LTD – CONSULTING ENGINEERS KORINTHOS-TRIPOLI-KALAMATA HIGHWAY – PELOPONNESE, GREECE PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

11. ODOTECHNIKI LTD – CONSULTING ENGINEERS KORINTHOS-PATRAS HIGH SPEED RAILWAY – PELOPONNESE, GREECE PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

12. ODOTECHNIKI LTD – CONSULTING ENGINEERS STYLIDA RING ROAD – CENTRAL GREECE PARTICIPATION IN MAJOR UNDERGROUND WORKS IN GREECE

13. ODOTECHNIKI LTD – CONSULTING ENGINEERS STATE OF THE ART DESIGN, MODELLING, ANALYSIS DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

14. ODOTECHNIKI LTD – CONSULTING ENGINEERS DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS TUNNEL DESIGN

15. ODOTECHNIKI LTD – CONSULTING ENGINEERS 2D MODELLING AND ANALYSIS OF TUNNEL EXCAVATION Simulation of slope tunnels (SRF procedure) The influence of competent rock mass layer Back analysis of twin tunnel excavation Angle 60 o Simulation of the discontinuities in a stratified rock mass DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

16. ODOTECHNIKI LTD – CONSULTING ENGINEERS 3D MODELLING AND ANALYSIS OF TUNNEL EXCAVATION WITH ANCHORS DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

17. ODOTECHNIKI LTD – CONSULTING ENGINEERS 3D MODELLING AND INVESTIGATION OF TWIN TUNNEL EXCAVATION plastic strain vertical displacements plastic strain vertical displacements plastic strain vertical displacements DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

18. ODOTECHNIKI LTD – CONSULTING ENGINEERS 3D ANALYSIS AND INVESTIGATION OF TUNNEL FACE TREATMENT IN SHALLOW TUNNELS Evaluation of different tunnel face treatment schemes based on the resulting surface settlements for a shallow urban tunnel DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

19. ODOTECHNIKI LTD – CONSULTING ENGINEERS 3D MODELLING AND ANALYSIS OF TUNNEL EXCAVATION WITH FOREPOLING Bending moment distribution of the forepole umbrella and influence of the tube length on the bending moment DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

20. ODOTECHNIKI LTD – CONSULTING ENGINEERS 3D MODELLING AND ANALYSIS OF TUNNEL’S FINAL LINING Creep strains ε cr ε cr,td 0.50ε cr,td t 50% tdtd t Stress level q/q f SIMULATION OF THE GEOMATERIAL TIME-DEPENDENT BEHAVIOUR DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

21. ODOTECHNIKI LTD – CONSULTING ENGINEERS PROBABILISTIC ANALYSIS IN TUNNELLING Mean tunnel load m p /p o,m Load coefficient of variation Vp (%) Convergence - Confinement Method Monte - Carlo Simulation Variation of tunnel loads Point Estimation Method tunnel load (kPa) Angle ( o ) Reliability analysis of reinforced and unreinforced FL Normalized final lining axial force Tunnel loads partial factor Coefficient of variation V p Reliability index β Reinforced final lining Unreinforced final lining DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

22. ODOTECHNIKI LTD – CONSULTING ENGINEERS EXPERIENCE ON GEOTECHNICAL AND TUNNEL DATA BASE DEVELOPMENT Associates, Prountzopoulos, G. & Fortsakis, P., Participated in the Research on the behaviour of geomaterials during the construction of the Egnatia Odos tunnels and on the factors defining the final cost of construction (Egnatia Odos S.A.). Marinos, V., Prountzopoulos, G., Fortsakis, P., Koumoutsakos, D. & Papouli, D. (2012), Tunnel Information and Analysis System: A geotechnical database for tunnels. Geotechnical and Geological Engineering. doi: 10.1007/s10706-012-9570. DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

23. ODOTECHNIKI LTD – CONSULTING ENGINEERS TUNNEL AND CULVERT REHABILITATION DESIGN, MODELLING, ANALYSIS AND CONSULTING FOR UNDERGROUND WORKS

24. ODOTECHNIKI LTD – CONSULTING ENGINEERS ON SITE FOLLOW UP ENHANCES COMPANY’S RELIABILITY & EXPERIENCE CONSTRUCTION FOLLOW-UP AND CONSULTING

25. ODOTECHNIKI LTD – CONSULTING ENGINEERS DETAILED CONSTRUCTION DESIGN CONSTRUCTION FOLLOW-UP AND CONSULTING

26. ODOTECHNIKI LTD – CONSULTING ENGINEERS DETAILED CONSTRUCTION DESIGN AND ON-SITE SUPPORT CONSTRUCTION FOLLOW-UP AND CONSULTING

27. ODOTECHNIKI LTD – CONSULTING ENGINEERS DETAILED CONSTRUCTION DESIGN AND ON-SITE SUPPORT CONSTRUCTION FOLLOW-UP AND CONSULTING

28. ODOTECHNIKI LTD – CONSULTING ENGINEERS ON-SITE SUPPORT CONSTRUCTION FOLLOW-UP AND CONSULTING

29. ODOTECHNIKI LTD – CONSULTING ENGINEERS HUMAN RESOURSES OF ODOTECHNIKI LTD

30. ODOTECHNIKI LTD – CONSULTING ENGINEERS PARTNER AND DIRECTOR OF ODOTECHNIKI LTD KONSTANTINOS SEFEROGLOU, Geotechnical Engineer, M.Sc. www.linkedin.com/pub/konstantinos-seferoglou/2b/286/a Areas of expertise: Extensive conceptual design experience on civil engineering, mainly infrastructure projects; Extensive experience in team leadership and support of multidiscipline groups; Geotechnical investigation, monitoring programming and evaluation; Tunnelling, tunnel portal analysis & design, cut & cover design; Slope stabilization, retaining structures, rock fall protection design; Assessment of slide stabilization and design of remedial measures; Embankment design, earthworks reconstruction and upgrade; Bridge foundation and deep foundation design; Construction follow up consulting & value engineering; Client and authorities communication skills; Total design management and coordination.

31. ODOTECHNIKI LTD – CONSULTING ENGINEERS ASSOCIATES OF ODOTECHNIKI LTD Areas of expertise: Geotechnical analysis and design with emphasis on infrastructure projects, mainly focused on evaluation of geotechnical investigation data, tunnel design, foundation design, landslide rehabilitation, slope stability; Non-linear numerical analyses (2D & 3D) for the simulation of complex geotechnical environment and construction procedures; Development of geotechnical database for the storage and evaluation of geotechnical, design, construction and monitoring data; Risk analysis in geotechnical projects (sensitivity analysis, probabilistic analysis, reliability based design); Structural design of conventional structures. PETROS FORTSAKIS, Geotechnical Engineer, Ph.D. www.linkedin.com/pub/petros-fortsakis/24/a7a/368

32. ODOTECHNIKI LTD – CONSULTING ENGINEERS Areas of expertise: Design of tunnels with focus on the specific engineering geological and geotechnical behaviour of rock and soil formations; Tunnel face stability, tunnel face reinforcement and protection design, using rational methods, with focus on face nailing and steel tube umbrella in shallow tunnels; Numerical analyses with the use of finite element codes; Evaluation of geotechnical investigation data for rocks and soils; Design of geotextile reinforced soil structures, for use in road and rail embankments, retaining structures, bridge foundations; Landslide rehabilitation; Stability of big scale slope cuts in large open mines; Risk assessment associated with civil engineering works due to rock falls and landslides in highways and secondary roads. GEORGIOS PROUNTZOPOULOS, Geotechnical Engineer, Ph.D. www.linkedin.com/in/prountzopoulos ASSOCIATES OF ODOTECHNIKI LTD

33. ODOTECHNIKI LTD – CONSULTING ENGINEERS FRAGISKOS CHRYSOHOIDIS, Engineering Geologist, M.Sc. www.linkedin.com/pub/fragiskos-chrysohoidis/48/808/a59 ASSOCIATES OF ODOTECHNIKI LTD Areas of expertise: Geotechnical Investigation | Planning, Supervision & Evaluation; Geological and Geotechnical Design (field and desk work); Geotechnical Monitoring | Scheduling and Assessment.

34. ODOTECHNIKI LTD – CONSULTING ENGINEERS Areas of expertise: Structural analysis and design with emphasis on infrastructure design; Resistance of the structural system, the elements and the cross-sections; Investigation and solution proposal for earthquake-resistant design with real life experience in the local industry planning and execution; Involvement in analysis and design of structures under extreme loading conditions, including both seismic and wind settings; Inspection and assessment of nonlinear static and dynamic structural behaviour. Concentration on tension structures with the engagement of finite element method; Preparation or supervision of construction drawings. ISABELLA VASSILOPOULOU, Structural Engineer, Ph.D. www.linkedin.com/pub/isabella-vassilopoulou/46/871/304 ASSOCIATES OF ODOTECHNIKI LTD

35. ODOTECHNIKI LTD – CONSULTING ENGINEERS Areas of expertise: Structural analysis and design of structures (mainly infrastructure related civil engineering projects) including: 3D modelling and linear/non-linear numerical analyses; Resistance of the structural system, the elements and the cross-sections; Static analysis of structures under permanent, live, accidental, thermal and ground-settlement loads; Dynamic analysis of structures under seismic combinations; Foundation bearing capacity; Preparation or supervision of construction drawings. EVA XENOU, Structural Engineer, M.Sc. www.linkedin.com/pub/eva-xenou/46/3bb/b00 ASSOCIATES OF ODOTECHNIKI LTD

36. ODOTECHNIKI LTD – CONSULTING ENGINEERS Areas of expertise: Structural analysis and design of structures; 3D modelling and linear/non-linear numerical analyses; Extensive experience on structural analysis and design of metro stations, buildings and bridges; Dynamic analysis of structures under seismic combinations; Preparation or supervision of construction drawings. LEFTERIS CHRISOS, Structural Engineer www.linkedin.com/pub/lefteris-chrisos/53/26/353 ASSOCIATES OF ODOTECHNIKI LTD

37. CONTACT US FOR MORE INFORMATION ODOTECHNIKI LTD CONSULTING ENGINEERS www.odotechniki.gr Address: 59, 3 rd September Str. GR 10433, Athens, Greece e-mails: info@odotechniki.gr, odotechniki@odotechniki.grinfo@odotechniki.grodotechniki@odotechniki.gr Tel. +30 210 8228052, +30 210 8222127, Fax. +30 210 8233003