ICOMOS (the International Council on Monuments and Sites), is a global non-governmental organization associated with UNESCO dedicated to the conservation of the world’s monuments and sites. One of its most active areas of interest is, then, the conservation and restoration of sites and monuments. The list of documents concerning such commitment has been published in 1998:Continue reading “ICOMOS 2003 Charter on Restoration and Safety of Cultural Heritage. Fire Safety approach aspects to Historical Buildings and Emergency Management?”
On August 30th, 2019, a large portion of the wooden roof Church of San Giuseppe dei Falegnami suddenly collapsed, damaging the interior and some of the paintings and artefacts preserved inside. The event, happened in the most historical part of Rome, has interested a sixteenth century building, whose construction had been funded by the Corporation of the Carpenters.Continue reading “Protecting historical wood structures. A Workshop in Rome”
Climate change, presumably, will affect the way buildings will be designed and managed. Also museums are challenged by such risk and a new kind of approach needs to be studied.
Among the wealth of websites and papers that the internet web allows to read about the climate change issue, Managing Indoor Climate Risks in Museums has the gift of explaining the big picture and, at the same time, giving practical tips to the many professionals that need to be supported in studying and applying real-world solution to a new problem.Continue reading “How Climate Change will affect Museums: a book about Indoor Risks”
In three weeks, between January and February 2019, the EU financed STORM (Safeguarding Cultural Heritage through Technical and Organisational Resources Management) project has organised the STORM Academy 2019. The lessons will be held in Rome – National Fire Academy (I.S.A.) and in Viterbo (Tuscia University) by teachers selected among of the partners of the project.Continue reading “STORM Academy 2019: a Course on Cultural Heritage Protection and Climate Change”
CURE (Culture in City Reconstruction and Recovery) is a position paper published in 2018 by UNESCO and the World Bank Group that offers, according the foreword (Mr Enrico Ottone and Mr Ede Ijjasz-Vasquez), “a framework on Culture in City Reconstruction and Recovery and operational guidance for policymakers and practitioners for the planning, financing, and implementation phases of post-crisis interventions for city reconstruction and recovery“. Continue reading “CURE: an UNESCO – World Bank Group Position Paper on Cultural Heritage and Reconstruction”
On November 12th, 2018, the European Commission has posted on its website some information about a report (Europe is ready for climate impacts: Commission evaluates its strategy) on lessons learned and reflections on improvements for future action with regard to the impacts of climate change on economic sectors of EU regions. Continue reading “Europe is ready for climate impact. The EU Commission evaluates its strategy, but what about Cultural Heritage protection?”
On October 2018 ICCROM (the intergovernamental organization on International Centre for the Study of the Preservation and Restoration of Cultural Property) has published a couple of documents about “First Aid to Cultural Heritage in times of crisis”: a 176 pages pdf handbook and a 104 pages pdf toolkit. Continue reading “First Aid to Cultural Heritage in Times of Crisis – a double ICCROM publication”
A ferocious fire has devastated – probably destroying the 50 percent irreparably – the School of Art, a masterpiece by the Scottish architect Rennie Mackintosh. The building was famous because, together with works by Victor Horta, Henry Van de Velde, Adolf Loos and the American Louis Sullivan, represented a peak of that style that marked the passage from nineteenth-century eclecticism to modernity, functionalism and even twentieth century rationalism. Continue reading “Second Fire almost Destroys the Glasgow School of Art”
One of the main problems of emergency management in case of damage reported by historic buildings after an earthquake is represented by immediate damage assessment. In fact, nowadays it is not possible to use techniques other than the personal evaluation carried out by first responders.
Protecting Cultural Heritage is mainly aimed at avoiding that any kind of hazard could pose an excessive risk to the objects that must be preserved. There are conditions, nonetheless, that oblige to evacuate the artefacts, since the preventive measures cannot be anymore effective. So, in specific situations, museums and their staff may go through challenging times due both to natural disasters and climate change.
In the case of museums, when they are threatened for their role in protecting and valorizing precious witnesses of the past and human creativity, their intrinsic value for intercultural dialogue and mutual understanding must be protected and supported.
On December 5th, 2017, a large brush fire in California has forced the evacuation of tens of thousands of people and destroyed hundreds of homes and other buildings. According the media no injuries or structural damage have been reported, although the museum has been threatened and closed to the public on Wednesday 5th. Continue reading “Vegetation Fire and Cultural Heritage buildings: the Paul Getty Museum case study”
In the night of July 15th, 1823, a fire destroyed a large part of the Papal Basilica of St. Paul outside the Walls in Rome. In the following years reconstruction works, particularly interesting for the historical evolution of fire safety measures, began. In particular, the fire protection system adopted seems to be the first case of automatic detection and alarm system ever designed in the world. Continue reading “The oldest fire detection system ever? The case of St. Paul outside the Wall Basilica in Rome”
When an historic center, a town or a district, is hit by an earthquake, managing the securing operations may reach an high degree of complexity. Different organisations, large number of engineers, cultural heritage experts and workers need to operate at the same time as fast as they can. Continue reading “Securing historic towns damaged by earthquakes: managing the complexity”
Protecting Cultural Heritage form disasters needs different actions, one of the more important of which is to make aware stakeholders about what to do, during emergencies, to limit damages. Continue reading “Preparedness and First Aid to Cultural Heritage in the STORM Summer School”
When it comes to assess the risks of fire to Cultural Resources buildings or artefacts, normally they are related to buildings. In a consistently smaller number of cases, the scenario is related to a forest or a vegetation fire.
The technical literature concerned with the protection of cultural heritage from the risks of fire rarely takes this issue into account. One of the few documents that fully addresses this aspect is the Wildland Fire report in Ecosystems Effects of Fire on Cultural Resources and Archeology, published by the United States Department of Agricolture. Continue reading “Forest Fire Risks to Cultural Heritage”
Watercolor images are among the most vulnerable artefacts to the effects of firefighting water systems.
According to the NFPA 750 definition, watermist is a water spray for which the 99% of the total volume of liquid (Dv0.99) is distributed in droplets with a diameter smaller than 1000 microns at the minimum design operating pressure of the water mist nozzle.A slightly different definition has been introduced by the CEN/TS 14972, as a water spray for which the 90% of the total volume of liquid (Dv0.90) is distributed in droplets with a diameter smaller than 1000 microns at the minimum design operating pressure of the water mist nozzle. Continue reading “Water Mist and Cultural Heritage: can Simulation Tools help assessing its effect?”
A problem neglected by the most of the studies concerning the protection of Cultural Resources against natural hazards deals with the exposition of archaelogical artefacts to vegetation fire risks. All tangible and intangible cultural assets can be damaged by fires. Thus, archaeological remains are exposed to the risk caused by forest fires.
According to the document published in 2012 by the European Environment Agency (EEA), Europe will experience over the next few decades some effects caused by climate change. The expected changes are not uniform throughout the mainland, but they can be summarised in a number of homogeneous areas. Table 1 illustrates the qualitative trends provided in seven climatic regions. Continue reading “Fire risks and new threats from climate change to libraries and archives”
Being aware of the situation is one of the most important goals that emergency services need when they design the systems and the procedures to be used during or in the aftermath of a disaster. Situation awareness has many different aspects and needs a flow of information (possibly) in real time from a wide variety of data sources. Such data feed the systems that let emergency managers to assess the situation and take their decisions.
In this framework, the research and the end-user’s needs in the field of Cultural Heritage protection are aiming to integrated systems, featuring sensors and state-of-the-art platforms that have to be built in order to offer the needed information about the conditions of artefacts and the damages they’ve suffered for any kind of natural or man-made reason. According such strategy, heterogeneous and distributed data sources should communicate among the main system, generating a flow of data and information through the traditional internet channel. In this framework, sensors infrastructure based on UAV for surveying, diagnosis and monitoring open-space Cultural Heritage sites could be part of a system that would need technologies and innovative approaches to recognise images (collected by UAVs) along with models and techniques of information fusion.
Exploiting complex event processing techniques and technologies, the extracted information and/or the deducted/determined domain events, would be aggregated and correlated each other in order to bring out potential dangerous or critical situations, ranging from the recognition, validation and localization of signals and events that may suggest the need for monitoring, surveying or warning for disaster prevention, assessing the level of risk (Surveillance & Monitoring Services, Surveying & Diagnosis Services, Quick Damage Assessment Services).
A case study: the 2016 earthquake in Central Italy
In the 2016 earthquake in central Italy an increasing use of drones operated by Italian firefighters (CNVVF) has been recorded, from the early stages of the emergency, in order to have a quick and detailed overview of the magnitude of the damage suffered by major historical and artistic buildings. Such activity has been carried out in the framework of the new procedures adopted to secure buildings damaged in large scale emergency.
The same tools were used to define the urban areas with the highest number of building collapses. The drones, equipped with instrumentation for the photographic survey, have allowed the acquisition of a quantity of gigabytes of high-resolution images of the state of post seismic event locations. In particular, the flight of drones helped to identify the state of damage of all the historic buildings and churches of great artistic importance, located in the red area or not allowed area. These data analysis was significant in order to assess the real risk of further collapses and to design effective shoring systems to support unsafe parts still standing.
The aerial photogrammetric data obtained with several daily sorties of drones, are served by specific input software for rapid return and creation of 3D models, or integrated with cadastral data and geomorphological were a valuable support for the knowledge of the actual operating environment where the teams of firefighters intervened for the search and rescue people. In addition, this post processing has enabled, at the end of the rescue of the population, even a more accurate assessment of the damage and consequently a cost estimate as early as the early stages of the emergency.
Obviously, the accuracy of the data obtained (eg. point clouds, surface models and orthophotos) is not comparable with other system such as LIDAR, however, it represents a valid activity rescue tool support allowing to achieve a good evaluation of the severity of the scenario, and then an estimate of the timing necessary for the refurbishment of the primary infrastructure such as roads, electrical networks etc..
In the specific context, the Italian Fire Corps (CNVVF) special units experts in topography during rescue operations (and able to initiate the procedures for mapping), have scoured the areas affected by the quake. The VHF radio network of the CNVVF (equipped with GPS module and interfaced to specific software on tablet for tracking and geo-referencing), has let them to prepare maps where the information gathered from multiple sources, were processed by experts in GIS systems and transformed it in shapefiles or other formats widely used on platforms such as Google Maps. In this kind of scenarios, the activities needed to assess and restore safety of historic or cultural buildings can be supported by the research as the one carried out in the H2020 STORM project. The task of assessing quickly and in safety condition the damages suffered by historical or cultural buildings has brought to a wide use of UAVs by the CNVVF in the 2016 earthquake. The images recorded by the sensors that have equipped UAVs have been useful to emergency tasks, but their utility would be boosted by the comparison between data detected by LIDAR before and after the disaster event. The STORM pilots scenarios are aiming at integrating UAVs, LIDAR images and procedures shared between cultural heritage managers and CNVVF, in order to let them assess on the scenario and with the best possible resolution the damages a natural event has caused to buildings.
A paper concerning the use of drones (STORM project and the use of UAV to improve emergency management of disasters threatening cultural heritage), presented in the UAV&SAR2017 (Rome, 29th March, 2017) Workshop can be downloaded here: Guerrieri Marsella STORM_UAVSAR_def (1)
Risks to cultural heritage vary from catastrophic events (such as earthquakes, floods, etc) to gradual processes (such as chemical, physical, or biological degradation). The result is loss of value to the heritage. Sometimes, the risk does not involve any type of material damage to the heritage asset, but rather the loss of information about it, or the inability to access heritage items. So, heritage managers need to understand these risks well so as to make good decisions about protection of the heritage (for future generations) while also providing access for the current generation. ICCROM (Intergovernamental Organisation devoted to protect Cultural Heritage) and the Canadian Conservation Institute have published the “The ABC Method: a risk management approach to the preservation of cultural heritage”.
The handbookl is based on the five steps pf the management cycle (Establish the context, identify risks, analyze risks, evaluate risks, treat risks) and, for each step, three or more tasks are identified, whose complete list
1. Establish the context
- Task 1: Consult with decision makers. Define the scope, goals and criteria.
- Task 2: Collect and understand the relevant information.
- Task 3: Build the value pie.
2. Identify risks
- Task 1: Assemble the appropriate tools and strategies.
- Task 2: Survey the heritage asset and make a photographic record.
- Task 3: Identify specific risks, name them, and write their summary sentences.
3. Analyze risks
- Task 1: Quantify each specific risk.
- Task 2: Split or combine specific risks, as needed.
- Task 3: Review and refine the analyses.
4. Evaluate risks
- Task 1: Compare risks to each other, to criteria, to expectations.
- Task 2: Evaluate the sensitivity of prioritization to changes in the value pie.
- Task 3: Evaluate uncertainty, constraints, opportunities.
5. Treat risks
- Task 1: Identify risk treatment options.
- Task 2: Quantify risk reduction options.
- Task 3: Evaluate risk reduction options.
- Task 4: Plan and implement selected options.
The document is an important study aimed at helping cultural heritage managers and risk assessment professionals in starting the process that limits damages to buildings and artefacts. The document is freely downloadable from the ICCROM website or from the Canadian Conservation Institute website.
The project STORM (Safeguarding Cultural Heritage through Technical and Organisational Resources Management) has been funded by the Horizon 2020 EU Program and aims at defining a platform that managers of cultural heritage sites can use in improving preparedness, managing emergencies and planning restoration of damaged buildings.
The project specifically considers risks that the cultural sites have to face from either long-term degradation (whose action is far slower than the typical applications of feedback controls), or extreme traumatic events (whose action is much faster). Their common nature is the climate change. So, the specific scope of the project is creating a technological platform that allows a systematic comparison between a real (measured) state and a desired theoretical state.
Assumptions are kept to the minimum possible level and the difference (the measured error signal), is the main input for whatever algorithm may be used to compute the action (input) that needs to be applied to the mitigation process to achieve the desired objective. So, in other words, reliable and up-to-date measures of the key risk variables are the base line for the STORM predictive model but also for the identification of better intervention actions in terms of restoration and conservation of original materials that will be the starting point for a long term mitigation strategies. As a consequence, needs take into account the use of a large number of sensors, in order to acquire the most useful data. For example, in the case of a progressive relative displacement of a structural beam of an ancient monument, over time comparison of periodical LIDAR based detection of the artefact overall 3D model can be used to detect the small differences in the beam’s position over time.
What is a LiDAR?
According Wikipedia, Lidar (also called LIDAR, LiDAR, and LADAR) is a surveying method that measures distance to a target by illuminating that target with a laser light. The name lidar, sometimes considered an acronym of Light Detection And Ranging (sometimes Light Imaging, Detection, And Ranging), was originally a portmanteau of light and radar. Lidar is popularly used to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry. Lidar sometimes is called laser scanning and 3D scanning, with terrestrial, airborne, and mobile applications.
How Cultural Heritage can benefit of LiDAR (according STORM Project)
Based on such information a team of experts (structural engineers, archaeologists, geologists, restorers) will cooperate, in order to understand the causes and find the most adequate response. In this example, the action cannot be predetermined (nor taken automatically of course), but instead requires a careful and accurate cooperative design and planning of the action in order for it to be as effective and as unobtrusive as possible.
When a disaster occurs, general guidelines related to a wide range of events (e.g. flood, earthquake), existing for the specific site, must be dynamically adapted in near real time by ad-hoc team of experts in order to identify the most urgent recovery actions for the specific emergency. So, LIDAR sensors used for structural evaluation and track-changes of the artefact in terms of erosion monitoring as also for geomorphological assessment and mapping of the protected area can offer a valuable support to managers. Moreover, photogrammetric reconstruction by means of historical and contemporary aerial photography to track-changes can support when it comes to assessing the damages through time and forecast potential future threats
LIDAR equipment have been used until now mostly on movable supports, that are steadily placed on the ground to let an accurate record of data. More recently, RPAS devices have been tested as platform to be equipped with regular camera (high resolution RGB still pictures) for monitoring and mapping, Near Infrared camera and thermal and multispectral sensors or the localization and monitoring of buried structures, light-weight LiDAR for higher resolution 3D scanning. Such possibility has demonstrate its extreme importance during emergency situations: in fact, accessing parts of buildings in some cases can be difficult or can pose a severe risk to rescuers. During the rescue operations of the Central Italy earthquake of August 2016, RPAS mounted LIDAR have been used in many scenarios by the Italian National Fire Service and a complete report of such use hasn’t been published yet.
In which scenarios can LIDAR sensors prove to give data not replaceable by other sensors or any operational procedures? One of the first case is any natural or man-made threat that can damage the structures of heritage buildings. Suppose that, after an earthquake, in an ancient masonry buildings fixtures are identified. Even if, in general, it is possible to track the evolution of a fixture in a building, in the larger buildings it is actually impossible to be certain that a damage has been produced by a specific event.
It could have been caused previously for any reason (i.e. failure of foundation). The answer that the Italian STORM pilot site of museum of Terme di Diocleziano (Diocletian Baths – Rome) is currently testing is based on a LIDAR scanner of the buildings.
The hypothetical scenario sees a rescue call to firefighters that arrive with their own LIDAR, scan the portion of the building damaged and compare their results with the data previously acquired by the museum managers. As it’s known LiDAR needs time and, mostly, large quantity of data storage, but a small portion of a building is much more manageable. So, even with a high definition setting, the procedure could offer a new possibility to improve the reliability of the assessment that rescuers have to do during operations.
Dr. Ing. Stefano Marsella (CNVVF) for STORM Project