Validation of a measurement procedure for the assessment of the safety of buildings in urgent technical rescue operations

Alicandro, Maria; D’Emilia, Giulio; Dominici, Donatella; Gaspari, Antonella; Marsella, Stefano; Marzoli, Marcello; Natale, Emanuela; Zollini, Sara

doi:10.21014/acta_imeko.v10i4.1141

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…Naturally, it is necessary to develop procedures of use that take into account the particular measurement conditions that an emergency situation entails in terms of: need to operate quickly, minimizing the number of acquisitions; possibility of accidental or voluntary movement of the instrument; impossibility of acquire some points due to the interposition of people and vehicles; non-optimal location of the instrument with respect to the building; unfavourable environmental conditions. These conditions and the simplification need should also be considered in the calibration phase, in order to correctly estimate the metrological performances of the instruments in the conditions of actual use, and to guarantee the validation and the trustworthiness of the results [24][25][26]. This approach is not usual in the literature on the subject, where calibration is generally performed under laboratory conditions [15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Metrological comparison between instruments for status monitoring of buildings after earthquake

Natale¹,

D’Emilia²,

Chiominto³

et al. 2023

Proceedings of the 18th IMEKO TC10 Conference on Measurement for Diagnostics, Optimisation and Control

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This paper aims to investigate the possibility of using measuring instruments to obtain objective indications of the state of a building following an earthquake, to facilitate the planning of interventions in safe conditions and to design provisional structures. The use of such tools would also be useful for monitoring both buildings and provisional structures over time. In particular, a Laser Scanner and a Total Station are examined and compared from a metrological point of view, to evaluate the possibility of using them in emergency situations, which present particular criticalities for measurements, if the reliability of the results has to be guaranteed. The façade of a historical building is used as a test case, and is subjected to measurement campaigns, distributed over time, with the aim of evaluating repeatability and reproducibility of results. Furthermore, applying known thicknesses to the monitoring points, the systems measuring thresholds are evaluated. This work would like to represent a first step towards the standardization of procedures for the adoption of Laser Scanner and Total Stations by rescuers in emergency situations.

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Section: Introductionmentioning

confidence: 99%

Metrological comparison between instruments for status monitoring of buildings after earthquake

Natale¹,

D’Emilia²,

Chiominto³

et al. 2023

Proceedings of the 18th IMEKO TC10 Conference on Measurement for Diagnostics, Optimisation and Control

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“…In recent years, the three-dimensional reconstruction of cities or of individual buildings has gained value for a number of applications [1][2][3][4][5][6][7], including evaluating seismic damage and emergency response planning. A typical 3D model can be created using a variety of techniques, such as photogrammetry, laser scanning, tilt photography from unmanned aerial vehicles (UAVs), Synthetic Aperture Radar (SAR) approaches, and more [8,9].…”

Section: Introductionmentioning

confidence: 99%

Metrological issues in the use of mobile mapping systems for planning emergency response

Chiominto,

D’Emilia,

Gaspari

et al. 2023

J. Phys.: Conf. Ser.

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The paper intends to investigate some metrological aspects concerning data acquisition in determining the slope of escape routes in existing building, in order to provide this information as input for subsequent evacuation planning algorithms. The analysis is based on the point cloud acquired by a laser scanner and deepens different aspect that can impact on the slope uncertainty, linked to the choice of the algorithm for determining the slope itself, the values of the different parameters to set, and the different possible study strategies of the floor surface. The analysis will be conducted by using a commercial software, with the aim, in a future work, of investigating other kinds of algorithms and approaches, but also non-commercial data processing methods that may provide further useful information.

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“…In this context, geomatic techniques play a fundamental role for continuous detection and damage quantific-ation over infrastructures by using the traditional survey techniques (Zschiesche, 2022), or LiDAR, photogrammetry, remote sensing (optical and SAR), and image analysis methods. Although the classic survey techniques can provide highly reliable real-time data of structural conditions (Alicandro et al, 2021, Zschiesche, 2022, they cannot be always performed both because of economic reasons and of the difficult-to-access areas. Therefore, the aforementioned techniques can be exploited to develop new and alternative methodologies to fulfil this need.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Algorithms to Extract Decay Forms of Concrete Infrastructures From Uav Photogrammetric Data

Alicandro

Dominici

Pascucci

et al. 2023

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Nowadays, inspection and maintenance of infrastructures is one of the most crucial issues to be faced. The structural performances should be constantly checked, considering that especially ageing stock and extreme weather events deteriorate the network infrastructure over time. However, economic reasons and the practical difficulty of carrying out a targeted inspection makes the detection a major challenge. In most of the western countries, a high percentage of infrastructures has reached and exceeded the nominal life, so the detection plays a fundamental role for their proper functioning. In this paper, experimental algorithms were tested to extract the decay forms on a portion of concrete pillar. These algorithms were applied on a metric digital image, obtained by photogrammetric output. The finally accuracy was calculated considering as ground truth the visual inspection performed by a concrete expert and the confusion matrices, the overall accuracy and the kappa-coefficient were evaluated. Then, a comparison with existing algorithms was made using the same methodology. The stacking of the original RGB image with two of the experimental algorithms could increase the accuracy up to 5%, while the common ones did not produced significant improvements. The final purpose of this work was to propose a semi-automatic/automatic procedure to detect concrete decay forms and, therefore, help the infrastructure management. The awareness is essential to provide the best practices to ensure safety and adequate performance over time.

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Validation of a measurement procedure for the assessment of the safety of buildings in urgent technical rescue operations

Cited by 8 publications

References 12 publications

Metrological comparison between instruments for status monitoring of buildings after earthquake

Metrological comparison between instruments for status monitoring of buildings after earthquake

Metrological issues in the use of mobile mapping systems for planning emergency response

Enhanced Algorithms to Extract Decay Forms of Concrete Infrastructures From Uav Photogrammetric Data

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