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Use of new technologies for the survey of the Iloilo City CH assets: Villanueva building (ID 01-008) front façade (a), and roof (b) by drone; Villanueva building 6 (ID 01-018) frontal façade (c) and point cloud (d) by drone and photogrammetry respectively.
Source publication
Multi-hazard risk assessment of building portfolios is of primary importance in natural hazard-prone areas, particularly for the definition of prioritization schemes for implementing Disaster Risk Reduction (DRR) and resilience-enhancing strategies. Among the most vulnerable buildings, cultural heritage (CH) assets are especially important because...
Contexts in source publication
Context 1
... technologies have been used during the fieldwork in order to help the surveyors in the data collection exercise, as described in Section 2. For instance, drones have been extensively used for façade and roof inspections. As an example, Figure 3a shows the façade of the "Villanueva building" (ID 01-008) (ICCHCC 2010), while Figure 3b shows the building roof. The "Villanueva building" is a L-shape, two-story RC frame, whose roof was inaccessible; the drone was the only practicable tool for collecting roof data/information. ...
Context 2
... technologies have been used during the fieldwork in order to help the surveyors in the data collection exercise, as described in Section 2. For instance, drones have been extensively used for façade and roof inspections. As an example, Figure 3a shows the façade of the "Villanueva building" (ID 01-008) (ICCHCC 2010), while Figure 3b shows the building roof. The "Villanueva building" is a L-shape, two-story RC frame, whose roof was inaccessible; the drone was the only practicable tool for collecting roof data/information. ...
Context 3
... important aspect must be considered when a survey campaign has to be organized in a cyclonic region. Figures 3c and Figure 3d respectively show the "Villanueva building 6" (ID 01-018) (ICCHCC 2010) façade and its point cloud obtained by elaborating the pictures taken by smartphone and photo camera. As discussed in Section 2, photogrammetry is a powerful tool for the construction of point clouds, even if some specific rules must be followed in order to obtain a reliable result. ...
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Citations
... Some structural issues were brought about, not by modification of the structure, but by its original design. These are plan irregularity, vertical irregularity, mass irregularity, and pounding (Sevieri et al., 2019). Out of 25 structures, 36% require an in-depth structural investigation, as its condition is deemed poor based on the preliminary survey. ...
Building adaptive reuse has been a popular strategy for cultural heritage conservation of structures for it serves two basic objectives of preserving heritage structures and promoting cultural heritage and tourism. Adaptive reuse is the adaptation of an old structure to allow the introduction of a modern function into the old structure. Old buildings are not demolished but recycled into modern uses. This strategy, however, needs a careful and thorough assessment of these existing heritage buildings to assure their resilience and sustainability to future hazards. Heritage buildings for adaptive reuse due to age and structural deterioration are highly vulnerable to hazards like earthquakes. Moreover, these buildings when used for commercial purposes may be subjected to additional loads due to changes in function. Considering the age of the structure, conformity to new design codes, additional loads imposed by unit modification, and the new function brought about by adaptive reuse of these structures, there is a need to assess these buildings to assure their safety and continuous use. Promoting adaptive reuse of heritage buildings and tourism is most appropriate in heritage zones like Calle Real in Iloilo City, the site for the case study. This paper presents a rapid seismic screening of buildings to prioritize a population of heritage buildings in a heritage zone for further detailed inspection. A site survey of the buildings was conducted at the heritage zone of Calle Real, Iloilo City in terms of their current use, and current condition to determine potential structural, maintenance, and functional issues related to resilience and to recommend future improvements in the implementation of adaptive reuse of heritage structures in cities and towns to assure their sustainability.
... Some structural issues were brought about, not by modification of the structure, but by its original design. These are plan irregularity, vertical irregularity, mass irregularity, and pounding (Sevieri et al., 2019). Out of 25 structures, 36% require an in-depth structural investigation, as its condition is deemed poor based on the preliminary survey. ...
Building adaptive reuse has been a popular strategy for cultural heritage conservation of structures for it serves two basic objectives of preserving heritage structures and promoting cultural heritage and tourism. Adaptive reuse is the adaptation of an old structure to allow the introduction of a modern function into the old structure. Old buildings are not demolished but recycled into modern uses. This strategy, however, needs a careful and thorough assessment of these existing heritage buildings to assure their resilience and sustainability to future hazards. Heritage buildings for adaptive reuse due to age and structural deterioration are highly vulnerable to hazards like earthquakes. Moreover, these buildings when used for commercial purposes may be subjected to additional loads due to changes in function. Considering the age of the structure, conformity to new design codes, additional loads imposed by unit modification, and the new function brought about by adaptive reuse of these structures, there is a need to assess these buildings to assure their safety and continuous use. Promoting adaptive reuse of heritage buildings and tourism is most appropriate in heritage zones like Calle Real in Iloilo City, the site for the case study. This paper presents a rapid seismic screening of buildings to prioritize a population of heritage buildings in a heritage zone for further detailed inspection. A site survey of the buildings was conducted at the heritage zone of Calle Real, Iloilo City in terms of their current use, and current condition to determine potential structural, maintenance, and functional issues related to resilience and to recommend future improvements in the implementation of adaptive reuse of heritage structures in cities and towns to assure their sustainability.
... Following Bosher et al., (Sevieri et al. 2019). In profiling the earthquake risk, this paper used FaMIVE which was developed by D'Ayala and Speranza in the early 2000s in studying Italian heritage structures; in profiling the typhoon risk, this paper studied the interaction between roofing systems and strong winds; in profiling the combined flood and storm surge risk, this paper used data from Project NOAH (Sevieri et al. 2019). ...
... Following Bosher et al., (Sevieri et al. 2019). In profiling the earthquake risk, this paper used FaMIVE which was developed by D'Ayala and Speranza in the early 2000s in studying Italian heritage structures; in profiling the typhoon risk, this paper studied the interaction between roofing systems and strong winds; in profiling the combined flood and storm surge risk, this paper used data from Project NOAH (Sevieri et al. 2019). Yu, Oreta, Ibabao , and Hechanova's 2013 "Supporting Local Initiatives in Preserving Heritage Buildings in Iloilo City (Philippines) through Risk Assessment" focused on three hazards, earthquake, typhoon and fire, as it examined 26 heritage structures in Iloilo City. ...
... The first cluster of assessments of this paper mapped out the vulnerabilities of the seven Filipino-Spanish churches through on-site rapid vulnerability assessments. Because this paper is an initial study of the seven heritage churches of the Diocese of Maasin, this paper utilizes only Sevieri et al.'s first level of rapid resistance/vulnerability assessment (Sevieri et al. 2019). Such rapid vulnerability assessments focused on the age of the structures, materials used, histories of degradation, histories of alterations and improvements, and other details that are susceptible to damage, such as roofing systems, windows, doors and other timber work. ...
In the Roman Catholic Diocese of Maasin, on the island of Leyte, Philippines, there remain today seven Filipino-Spanish churches that are made of stone, mortar and wood, ranging from almost four centuries to more than a century old. The Island of Leyte, as home to 22 active and dormant volcanoes, as exposed to the atmospheric disturbances from the Pacific Ocean, and as bisected by the Philippine Fault Line, is more at risk to extreme natural hazards than an average Philippine island. By looking at the interplay between the resistance/vulnerability of these churches on one hand, and the natural hazards threatening these churches on the other hand, this paper proffers mitigating recommendations to the primary stakeholders with the purview of increasing the resilience of these same churches. The data on the resistance/vulnerability of the said churches were gathered through rapid survey, while the data on natural hazards were gathered through existing hazard maps and web applications. The methodology laid out by this paper can be a useful initial step for the conservation of heritage structures in developing societies. Sa Katoliko Romanong Diyosesis ng Maasin sa isla ng Leyte sa Pilipinas, kasalukuyang may pitong Pilipino-Espanyol na simbahang gawa sa bato, mortar, at kahoy na halos isa hanggang apat na siglo nang umiiral. Ang Isla ng Leyte ay tahanan ng 22 na aktibo at dormanteng bulkan na nakalantad sa mga atmosperikong alburuto mula sa Karagatang Pasipiko at nahahati pa sa ilalim ng fault line ng Pilipinas. Ilan lamang sa dahilan kung bakit maituturing na risk sa matitinding likas na panganib kumpara sa karaniwang isla sa Pilipinas. Kapag titingnan ang pagkikipagtalaban ng resistance/bulnerabilidad, kaakibat ang mga likas na inaasahang panganib (natural hazards) ng mga simbahan, mahalaga para sa papel na ito na magbigay ng mga rekomendasyon sa mga pangunahing stakeholder na makakabawas ng masamang epekto datapwat magpapalawak pa ng katatagan ng mga natukoy na simbahan. Sa pamamagitan ng rapid survey, kinalap ang mga datos hinggil sa resistance/bulnerabilidad ng mga simbahan, samantalang nilikom ang datos sa mga likas na inaasahang panganib sa pamamagitan ng mga umiiral na hazard maps at web applications. Maaaring maging kapaki-pakinabang ang metodolohiyang ginamit ng papel upang magsilbing inisyal na hakbang sa konserbasyon ng mga estrukturang pamana sa mga umuunlad pa lamang na lipunan.
... Following Bosher et al., (Sevieri et al. 2019). In profiling the earthquake risk, this paper used FaMIVE which was developed by D'Ayala and Speranza in the early 2000s in studying Italian heritage structures; in profiling the typhoon risk, this paper studied the interaction between roofing systems and strong winds; in profiling the combined flood and storm surge risk, this paper used data from Project NOAH (Sevieri et al. 2019). ...
... Following Bosher et al., (Sevieri et al. 2019). In profiling the earthquake risk, this paper used FaMIVE which was developed by D'Ayala and Speranza in the early 2000s in studying Italian heritage structures; in profiling the typhoon risk, this paper studied the interaction between roofing systems and strong winds; in profiling the combined flood and storm surge risk, this paper used data from Project NOAH (Sevieri et al. 2019). Yu, Oreta, Ibabao , and Hechanova's 2013 "Supporting Local Initiatives in Preserving Heritage Buildings in Iloilo City (Philippines) through Risk Assessment" focused on three hazards, earthquake, typhoon and fire, as it examined 26 heritage structures in Iloilo City. ...
... The first cluster of assessments of this paper mapped out the vulnerabilities of the seven Filipino-Spanish churches through on-site rapid vulnerability assessments. Because this paper is an initial study of the seven heritage churches of the Diocese of Maasin, this paper utilizes only Sevieri et al.'s first level of rapid resistance/vulnerability assessment (Sevieri et al. 2019). Such rapid vulnerability assessments focused on the age of the structures, materials used, histories of degradation, histories of alterations and improvements, and other details that are susceptible to damage, such as roofing systems, windows, doors and other timber work. ...
In the Roman Catholic Diocese of Maasin, on the island of Leyte, Philippines, there remain today seven Filipino-Spanish churches that are made of stone, mortar and wood, ranging from almost four centuries to more than a century old. The Island of Leyte, as home to 22 active and dormant volcanoes, as exposed to the atmospheric disturbances from the Pacific Ocean, and as bisected by the Philippine Fault Line, is more at risk to extreme natural hazards than an average Philippine island. By looking at the interplay between the resistance/vulnerability of these churches on one hand, and the natural hazards threatening these churches on the other hand, this paper proffers mitigating recommendations to the primary stakeholders with the purview of increasing the resilience of these same churches. The data on the resistance/vulnerability of the said churches were gathered through rapid survey, while the data on natural hazards were gathered through existing hazard maps and web applications. The methodology laid out by this paper can be a useful initial step for the conservation of heritage structures in developing societies.
Sa Katoliko Romanong Diyosesis ng Maasin sa isla ng Leyte sa Pilipinas, kasalukuyang may pitong Pilipino-Espanyol na simbahang gawa sa bato, mortar, at kahoy na halos isa hanggang apat na siglo nang umiiral. Ang Isla ng Leyte ay tahanan ng 22 na aktibo at dormanteng bulkan na nakalantad sa mga atmosperikong alburuto mula sa Karagatang Pasipiko at nahahati pa sa ilalim ng fault line ng Pilipinas. Ilan lamang sa dahilan kung bakit maituturing na risk sa matitinding likas na panganib kumpara sa karaniwang isla sa Pilipinas. Kapag titingnan ang pagkikipagtalaban ng resistance/bulnerabilidad, kaakibat ang mga likas na inaasahang panganib (natural hazards) ng mga simbahan, mahalaga para sa papel na ito na magbigay ng mga rekomendasyon sa mga pangunahing stakeholder na makakabawas ng masamang epekto datapwat magpapalawak pa ng katatagan ng mga natukoy na simbahan. Sa pamamagitan ng rapid survey, kinalap ang mga datos hinggil sa resistance/bulnerabilidad ng mga simbahan, samantalang nilikom ang datos sa mga likas na inaasahang panganib sa pamamagitan ng mga umiiral na hazard maps at web applications. Maaaring maging kapaki-pakinabang ang metodolohiyang ginamit ng papel upang magsilbing inisyal na hakbang sa konserbasyon ng mga estrukturang pamana sa mga umuunlad pa lamang na lipunan.
