Retaining slope structures are increasingly considered in geotechnical engineering projects due to extensive urban cities growth. These kinds of engineering constructions may present instabilities over the time and may require reinforcement or even rebuilding of the structure. In this context, statistical analysis is an important tool for decision making regarding retaining structures. This study approaches the failure probability of the construction of a retaining wall over the debris of an old and collapsed one. The new solution’s extension length will be of approximately 350 m and will be located over the margins of the Lake Paranoá, Brasilia, in the capital of Brazil. The building process must also account for the utilization of the ruins as a caisson. A series of *in situ<\/em> and laboratory experiments defined local soil strength parameters. A Standard Penetration Test (SPT) defined the in situ<\/em> soil stratigraphy. Also, the parameters obtained were verified using soil data from a collection of masters and doctoral works from the University of Brasília, which is similar to the local soil. Initial studies show that the concrete wall is the proper solution for this case, taking into account the technical, economic and deterministic analysis. On the other hand, in order to better analyze the statistical significance of the factor-of-safety factors obtained, a Monte Carlo analysis was performed for the concrete wall and two more initial solutions. A comparison between the statistical and risk results generated for the different solutions indicated that a Gabion solution would better fit the financial and technical feasibility of the project.<\/p>\r\n","references":"[1]\tAlbuquerque, B., Campos, D. (2015). \"Analytical Slope Stability Analysis Based on the Statistical Characterization of Soil Shear Strength\". World Academy of Science, Engineering and Technology, International Science Index 107, International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, 9(11), 1429 - 1434.\r\n[2]\tAlbuquerque, B. C. P., Domingues, V. R. (2016). \u201cInfinite Slope Analysis: A Statistical Approach in Risk Management\u201d. Proceedings of the Fourth International Conference on New Developments in Soil Mechanics and Geotechnical Engineering, Lefkosas, ISSN\/ISBN: 9758359282.\r\n[3]\tCampos, D., Mascarenhas, P., Almeida, L., Albuquerque, B., Domingues, V and Ozelim, L. (2017). \u201cAn\u00e1lise de viabilidade t\u00e9cnico-econ\u00f4mica em um caso real de projeto de estrutura de conten\u00e7\u00e3o\u201d. Artigo t\u00e9cnico, VII Confer\u00eancia Brasileira sobre estabilidade de encostas, Florian\u00f3polis, SC. (em an\u00e1lise).\r\n[4]\tChalermyanont, T., and Benson, C. (2005). \u201cReliability-based design for external stability of mechanically stabilized earth walls\u201d Int. J. Geomech., 10.1061\/(ASCE)1532-3641(2005)5:3(196), 196\u2013205.\r\n[5]\tCerri, L. E. S. (1993). \u201cRiscos geol\u00f3gicos associados a escorregamentos: uma proposta para preven\u00e7\u00e3o de acidentes\u201d. Tese de Doutorado, UNESP, Rio Claro, 197p.\r\n[6]\tMoreira, J. E. (1989). \u201cA philosophic approach to geothecnical engineering\u201d De Mello Volume. S\u00e3o Paulo: Ed. Edgard Blucher Ltda, 331-358.\r\n[7]\tNogami, J. S; Villibor, D. F. (1994). \u201cIdentifica\u00e7\u00e3o Expedita dos Grupos de Classifica\u00e7\u00e3o MCT para Solos Tropicais\u201d. - Foz do Igua\u00e7u, Brasil, Anais do 10\u00b0 COBRAMSEFABMS, Vol. 4, 1293-1300.\r\n[8]\tOzelim, L., Cavalcante, A., Pacheco de Assis, A., and Ribeiro, L. (2014). \"Analytical Slope Stability Analysis Based on Statistical Characterization of Soil Primary Properties.\" Int. J. Geomech., 10.1061\/(ASCE)GM.1943-5622.0000382, 06014018.\r\n[9]\tRowe, William D. Alter. (1987) Alternative risk evaluation paradigms. In: HAIMES, Yacov Y. & STAKHIV, Eugene Z. Risk analysis and management of natural and man-made hazards. New York: American Society of Civil Engineers. p.1-21.\r\n[10]\tSINAPI- Sistema Nacional de Pesquisa de custos e \u00edndices da constru\u00e7\u00e3o civil com encargos sociais desonerados para Distrito Federal (2017). Bras\u00edlia, 531p.\r\n[11]\tWhitman, R. V. (1984). \u201cEvaluating calculated risk in geotechnical engineering.\u201d J. Geotech. Engrg., 110(6), 143\u2013188.\r\n[12]\tWolfram Research, Inc. (2017) Mathematica, Champaign, Estados Unidos, Vers\u00e3o 11.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 131, 2017"}*