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IBRACON Structures and Materials Journal • 2012 • vol. 5 • nº 3
R. A. C. LOPES | E. P. SANTOS
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L. A. C. M. VELOSO
fiber technology. That type of system would have the capability to
send an alarm to the technicians whenever the value read by the
sensors overshot the limits set in the dam design phase and in the
control charts.
The Control Chart Type I, for residual regression, has the advan-
tage of more clearly showing the periods in which major differ-
ences occur between instrument readings and the predicted val-
ues. On the other hand, Control Chart Type II has the advantage
Figure 6 – Control chart for the regression values of the direct pendulum, Control Type II
Figure 7 – Aerial views of the UHE Tucuruí dam. (a) Construction of the second stage, with
cofferdams still present. (b) After completion of the second stage, where
the cofferdams were demolished (SOURCE: www.spcom.eng.br)
A
B