Observations on inclinometer measurements

Inclinometer measurements, done in flute outlined tubes, have been employed more and more spreadly in the last years, with the aim of monitoring potential and actual instability situations of soils. In spite of their large diffusion, this kind of inclinometer measurements have not been matter of recomendations about the installation of tubes, to be garantied of the real meaning of results. Present paper deals with the analysis of some hundreds of inclinometer measurements, carried out by a SINCO inclinometer, in flute outlined tube, in different instability situations of soil. The analysis of measurement data, we have at disposal, has concerned principally the determination of aspects which can alter results we read in normal diagram. These aspects, infact, can emphasize, minimize, or even cover the real movements of soil, and in any case they make very difficult the interpretation of measurements results. This paper would present results of these analysis carried on in many years of inclinometer measurements, in the aim of contributing to the statement of standard executive methodology for inclinometer tube installation, which could garantee the actual meaning of inclinometer measurements.