## 5 Results
### Adjacent Construction Activity Results  
For the analysis of vibration records generated by adjacent construction activity, the same procedure previously applied to ambient vibrations and seismic records was followed. A representative dataset of vibrations generated by construction activity was compiled. These data were processed using the same frequency selection criteria, focusing on those with participation factors above 10%. Figure 17 shows the identified frequencies by mode order in the system, allowing for the observation of relevant frequency bands in the records associated with this specific activity. The graph in Figure 17 highlights several frequency concentrations, particularly around 2.4 Hz, 2.5 Hz, and 2.7 Hz. These concentrations suggest that these specific frequencies are of notable relevance, as they consistently appeared in previous analyses of ambient vibrations and seismic activity. To examine the concentration of data by order in the construction records, boxplots were generated while maintaining the 2.5 Hz threshold, consistent with prior analyses. This representation provides a visual interpretation of dispersion and variability patterns across orders, ensuring alignment with the results from ambient vibration and seismic analyses. Figure 17: Identified frequencies in the X direction per order for data filtered at 2.5 Hz for adjacent construction vibrations (only frequencies with >10% participation are shown). Figure 18 shows the boxplots, with frequencies above 2.5 Hz at the top and frequencies below 2.5 Hz at the bottom. The boxplots for frequencies above 2.5 Hz reveal significant data dispersion, which may indicate greater variability in the system's dynamic response within this frequency range under construction vibrations. In contrast, frequencies below 2.5 Hz display a more uniform and stable dispersion, suggesting greater consistency and reduced susceptibility to dynamic interactions in this range. The frequency around 2.4 Hz emerges as a notable and stable component of the structure, consistently appearing in the results of ambient, seismic, and construction vibration analyses. This consistency underscores the relevance of this frequency in the dynamic behavior of the structure. To analyze the time-dependent behavior of the system's dynamic response, Figure 19 presents a specific study of the frequencies of order 24, filtered in relation to 2.5 Hz, both below and above this threshold. For this visualization, all frequencies of this order were extracted in 10 min intervals, maintaining the previous analyses of the range below 2.5 Hz and adding an additional analysis of the higher range. In each analysis, the frequency with the highest participation within each interval was selected. Then, the daily mean of these maximum frequencies was calculated to observe its evolution over time. Figure 18: Boxplots of orders grouped by a frequency threshold of 2.5 Hz for adjacent construction vibrations. (**a**) Orders with frequencies greater than 2.5 Hz. (**b**) Orders with frequencies less than 2.5 Hz. The main objective of this graph is to monitor the consistency and behavior of these specific frequency ranges over time under different sensor synchronization configurations. Independent analyses were conducted using two, three, and four synchronized sensors to evaluate how the mean of these frequencies varies based on the number of sensors used. This comparison helps to understand whether the number of sensors influences the stability or variability of the analyzed frequencies and how they respond to different dynamic conditions over time. Additionally, diamond-shaped markers were included in the graph to represent seismic events and adjacent construction activities impacting the analyzed frequencies. This allows us to visualize whether these external events have any notable impact on the stability or variability of the frequencies.