PSI - Issue 64

Isabella Mazzatura et al. / Procedia Structural Integrity 64 (2024) 114–121 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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a) b) Fig. 6. Histograms of the errors considering a) 15 cm and b) 25 cm concrete cover.

15 cm 25 cm

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Linear regression

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E1 - 15 cm E2 - 25 mm

y =-42.411x + 141.81 y = -37.285x + 144.91 y=-44.517+142.37x

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All configurations

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Error [cm]

Fig. 7. Linear regression in between error and height of the ducts considering 15 cm and 25 cm concrete cover. The red line represents the regression of the data considered all together (all the configurations, all the concrete covers, alle the walls).

3.3. Overall accuracy Since the execution configurations and the concrete cover depth seem to not influence the output of the test, all the data are analysed together for the different walls and results are shown in Fig. 8 . To compare them, the single duct’s location is normalized to some percentage of the wall height, being 100 cm the top, since one of the walls is slightly shorter than the others (wall 2 has a height equal to 235 cm, while the others are 240 cm), and being the relative location of the duct in the body the main factor of influence. The results are also in this case very similar, except for wall 2.