Safety is the most important aspect during design,
construction and service time of any structure, especially for challenging
projects like high-rise buildings and tunnels in urban areas. A high level
design considering the soil-structure-interaction, based on a qualified soil
investigation is required for a safe and optimised design. Due to the
complexity of geotechnical constructions the safety assurance guaranteed by the
4-eye-principle is essential. The 4-eye-principle consists of an independent
peer review by publicly certified experts combined with the observational
method. The paper presents the fundamental aspects of safety assurance by the
4-eye-principle. The application is explained on several examples, as deep
excavations, complex foundation systems for high-rise buildings and tunnel
constructions in urban areas. The experiences made in the planning, design and
construction phases are explained and for new inner urban projects
recommendations are given.
Cite this paper
R. Katzenbach, C. Bergmann and S. Leppla, "Safety Assurance for Challenging Geotechnical Civil Engineering Constructions in Urban Areas," Open Journal of Civil Engineering, Vol. 3 No. 3, 2013, pp. 33-38. doi: 10.4236/ojce.2013.33B006.
 R. Katzenbach, S. Leppla, A. Weidle and D. Choudhury, “Aspects Regarding Management of Soil Risk,” 4th International Seminar on Forensic Geotechnical Engineering, Bengaluru, 10-12 January 2013, p. 12.
 R. Katzenbach, A. Weidle and S. Kurze, “Baugrund und Grundwasser Erkundungsproblematik, Baugrundrisiko und Technische Risiken,” 39. Baurechtstagung der Arge Baurecht des Deutschen Anwaltsvereins, Berlin, 16-17 March 2012, p. 22.
 W. Rodatz, J. Gattermann and T. Bergs, “Results of Five Monitoring Networks to Measure Loads and Deformations at Different Quay Wall Constructions in the Port of Hamburg,” 5th International Symposium on Field Measurements in Geomechanics, Singapore, 1-3 December 1999, p. 4.
 R. Katzen-bach, A. Schmitt and J. Turek, “Co-Operation between the Geotechnical and Structural Engineers—Experiences from Projects in Frankfurt,” COST Action C7, Soil-Structure-Interaction in Urban Civil Engineering, Thessaloniki, 1-2 October 1999, pp. 53-65.
 R. Katzenbach, G. Bachmann, S. Leppla and H. Ramm, “Chances and Limitations of the Observational Method in Geotechnical Monitoring,” 14th Danube-European Conference on Geotechnical Engineering, Bratislava, 2-4 June 2010, p. 13.
 R. Katzenbach, “Optimised Design of High-Rise Building Foundations in Settlement-Sensitive Soils,” International Geotechnical Conference of Soil-Structure-Interaction, St. Petersburg, 26-28 May 2005, pp. 39-46.
 J.-L. Briaud, M. Ballouz and G. Nasr, “Static Capacity Prediction by Dynamic Methods for Three Bored Piles,” Journal of Geotechnical and Geoenvironmental Engineering, Vol. 126, ASCE, Reston, Virginia, USA, July 2000, pp. 640-649.