The importance of Safety monitoring of old structures e.g., Bridges, Dams etc need not be overemphasized. Monitoring of several significant parameters always essential for prediction of structural behavior of the unit. Need for proper calibration and maintenance of embedded instruments are discussed. Recording of data collected in a regular interval on site from few significant instruments embedded in the structure followed by Statistical analysis of correlated data is an important tool for health monitoring of structure. The issue is discussed with a mention of dam instrumentation and data analysis. It helps in commenting about trend of permanent settlement component of dam deflection of a few geographically supported dam, hence justifies instrumentation in giant structures from safety point of view in turn.
instrumentation, safety monitoring, data analysis, dam
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