This work presents a study about a retaining structure designed for the duplication of the rail FEPASA on the 74th km between Santos and São Paulo. This structure, an anchored retaining wall, was instrumented in the anchors heads with strain gauges in order to monitor its loads. The load measurements occurred during the performance test, locking and also after the works were concluded. A decrease on anchors loads is noticed at the moment immediately after the locking, during construction and after the works finished. It was observed that a loss of load in the anchors occurred to a maximum of 54%.
 Terzaghi, K. and Peck R. (1967) “Soil Mechanics in Engineering Practice” John Wiley & Sons, New York.
 Terzaghi, K., Peck, R. and Mesri G. (1996) “Soil Mechanics in Engineering Practice” John Wiley & Sons, New York.
 Sabatini, et al. Ground Anchors and Anchored Systems. Geotechnical Engineering Circular No. 4 (FHWA-if-99-015) Federal Highway Administration, Washington D.C .
 Zeitoune, N.M. Instrumentação e Analise de uma Cortina Atirantada Localizada no km 74 da Ferrovia Santos – São Paulo, FEPASA. 1982. 263p. Dissertação (Mestrado em Engenharia Civil) – Pontifícia Universidade Católica do Rio de Janeiro - RJ.
 Brahana D. C., Tanner W. M., Mullins l. D. Deflection and Earth Pressure Measurements of an Anchored Concrete Shoring Wall in:. International Symposium on Field Measurements in Geomechanics. 7th. 2007, Boston, Massachusetts.
 Jaky, J. (1944) “The Coefficient of Earth Pressure at Rest”. Journal of Society of Hungarian Architects and Engineers, Budapest, Hungary, pp. 355-358.