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Journal articles on the topic 'Technical damage'
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1
Otani, Shunsuke. "Emergency guideline for classification of risk levels of earthquake damaged reinforced concrete buildings." Bulletin of the New Zealand Society for Earthquake Engineering 21, no. 4 (December 31, 1988): 279–87. http://dx.doi.org/10.5459/bnzsee.21.4.279-287.
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As a part of Coordinated Technical Project on the Development of Repair and Strengthening Techniques for Buildings and Structures Damaged by Earthquakes, initiated in 1981 by Ministry of Constructiont Guidelines for Post-Earthquake Inspection and Evaluation of Earthquake Damage in Reinforced Concrete Buildings were developed. This paper describes the Guideline for Emergency Inspection and Evaluation for Hazard Risk of Damaged Buildings toward Aftershocks, which is intended for technical officers of a municipal government to evaluate a risk of damaged buildings immediately after earthquake hazards and to determine safe public buildings for use as places for evacuation and medical treatment. Damages of structural members, possible falling and overturning objects are to be investigated by external observation of a building.
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Grankina, V., O. Maliavina, and V. Milanko. "INVESTIGATION OF THE FREQUENCY OF DAMAGE TO HEATING NETWORKS." Municipal economy of cities 6, no. 159 (November 27, 2020): 36–49. http://dx.doi.org/10.33042/2522-1809-2020-6-159-36-49.
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This article is devoted to improving the efficiency of planning the consumption of material and technical and labor resources and their appropriate planning for heating and non-heating periods, by months of the year based on the calculation of the estimated number of damage to heating pipes, based on the obtained dependences of failure rate. This task is modern and relevant especially in conditions of limited funding of engineering systems. The object of study - the district heating system. The subject of research - pipelines of thermal networks. The purpose of the work is to determine the distribution of damage to the heating network pipelines by months. The research method is statistical modeling of damages of heating network pipelines by months of the year for different terms of their operation. Currently, the reliable operation of district heating systems and their heating networks is one of the main factors in the livelihood of settlements. The reliability of heating network pipelines is determined by the reliability indicators obtained on the basis of data on the damage of heating pipelines. Studying the distribution of the number of damages of heating network pipelines by months depending on the service life of heating pipelines is necessary for effective planning of material, technical and labor resources. In order to increase the efficiency of planning of material and technical and labor resources, it is advisable to calculate the number of damages for the heating and unheated periods, by months of the year, by decades. The calculated dependences of the distribution of damage to the pipelines of heating networks for the heating and non-heating periods on a monthly basis, decadally, should take into account the service life of the pipelines. The results of the above research will save material, technical, labor and energy resources.
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Nekrasov, A. I., and A. A. Nekrasov. "ASSESSMENT OF TECHNICAL DAMAGE FROM ELECTRIC MOTOR FAILURES." VESTNIK OF THE BASHKIR STATE AGRARIAN UNIVERSITY 55, no. 3 (September 25, 2020): 112–19. http://dx.doi.org/10.31563/1684-7628-2020-55-3-112-119.
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Eismont, Oleg. "Economic growth with environmental damage and technical progress." Environmental & Resource Economics 4, no. 3 (June 1994): 241–49. http://dx.doi.org/10.1007/bf00692326.
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Evtushenko, Sergej, and Timofey Krakhmalnyy. "DEFECTS AND DAMAGES OF METAL COLUMNS OF INDUSTRIAL BUILDINGS." Construction and Architecture 9, no. 2 (June 2, 2021): 11–15. http://dx.doi.org/10.29039/2308-0191-2021-9-2-11-15.
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This article is a continuation of the series of articles by the authors about the characteristic defects and damage to the building structures of industrial buildings. In earlier articles, there were descriptions of defects in ground foundations, damage to foundations, as well as arti-cles about damage to reinforced concrete columns and facades. The article presents a sys-tematization of defects and damage to metal columns of industrial buildings, based on the analysis of the results of the survey of many objects. The possible consequences of the de-velopment of the identified defects and damages are described. Recommendations for the assessment of the technical condition of damaged structures and recommendations for the elimination of identified defects and damage are given. The unique damages associated with the operation of lifting and transport equipment, road and rail transport are also given. The article concludes with an analysis of the characteristic zones of defect formation in the met-al columns of buildings for the created automated system for monitoring the state of indus-trial facilities.
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He, Li, and Yong Jiu Qian. "Method of Damage Evaluation of Long-Span Arch Bridge Subjected to Blast Loading." Applied Mechanics and Materials 178-181 (May 2012): 2405–11. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2405.
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A variety of conventional weapons equipped with explosive are used to destroy the significant long-span arch bridge. Because of the special function of the weapons and the complexity of the arch bridge, the damage results with the features of uncertainty and fuzzy are assessed with fuzzy theory. Combined with the standards for technical condition evaluation of highway bridges and wartime specific requirements, the fuzzy mathematical model based on the fuzzy mathematics theory and method is established to judgment comprehensively the arch technical condition. The hirarchy fuzzy comprehensive evaluation method is applied to determine the technical state grade of the damaged arch bridge. The method of damage evaluation provides the effective reference for the emergency repairmen of the arch bridges.
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Simonenko, V., and I. Demuzenko. "SOME ISSUES OF ESTABLISHING THE REASON FOR TECHNICAL DAMAGE TO THE PROPERTY AND DETERMINATION OF THE MATERIAL DAMAGE AS A RESULT OF THE PURPOSE." Theory and Practice of Forensic Science and Criminalistics 20, no. 2 (December 4, 2019): 535–44. http://dx.doi.org/10.32353/khrife.2.2019.42.
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According to the Resolution of Plenum of the Supreme Court of Ukraine of 27. 03. 1992 № 6 «About practice of consideration by courts of civil cases on claims for compensation of harm» , considering claims for compensation of harm, courts are guided by that the harm caused to the person and property of the citizen is subject to compensation in full by the person which caused it, provided that actions of the last were illegal, between them and damage is the direct causal connection and there are wines of the specified person
The article presents some of the problematic issues that arise in the study of the causes of technical damage to property and the definition of material damage as a result of flooding. The relevance of the subject of the article, which is emphasized by the availability of appropriate techniques developed by specialists of state specialized institutions, in particular, forensic experts of the Kyiv research Institute of forensic examinations and the Odessa research Institute of forensic examinations. The definition of the current legislation on material damage is given.
The article also points to the need to establish an appropriate defendant in civil disputes that arise when considering material damage, in accordance with the current provisions on the maintenance and maintenance of the housing stock. Fixing of damages is carried out by means of the act of pouring, full-scale inspection, photo fixation.
A comprehensive study of the initial data during the survey allows us to provide a clear, impartial opinion on the technical causes of damage and material losses due to flooding.
The above information can be used in judicial construction and technical expertise on technical causes of damage and material damage due to flooding.
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Kinzhikeyev, Sergey, József Rohács, Dániel Rohács, and Anita Boros. "Sustainable Disaster Response Management Related to Large Technical Systems." Sustainability 12, no. 24 (December 9, 2020): 10290. http://dx.doi.org/10.3390/su122410290.
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Numerous investigations assess the technical, technological, and managerial aspects of disaster response related to large technical systems. This paper deals with the possibility of synthesizing these aspects in a disaster response methodology, thus combining the technical, technological methods, tools, and software with the art of management. Its objective is to develop a preliminary methodology that supports the response management decision making processes related to earthquake-damaged large technical systems. The introduced methodology is demonstrated with the example of railway systems. It utilizes a combination of (i) a probabilistic model of railway system damage caused by earthquakes, (ii) a Markov model related to the damage and recovery phases, (iii) a probabilistic model of aftershocks, (iv) a statistical model of secondary effects, (v) impact models of management support actions, and (vi) response process management supported by a Markov Decision Process. The simulation results validate the concept. Based on these research results, the authors recommend that the described preliminary response management approach be further specified and implemented in disaster management procedures.
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Morita, Hiroaki. "The Damage and Recovery Measures of Sewage Treatment Systems Caused by the Great East Japan Earthquake." Journal of Disaster Research 8, no. 4 (August 1, 2013): 626–34. http://dx.doi.org/10.20965/jdr.2013.p0626.
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A large number of sewage facilities were severely damaged by the Great East Japan Earthquake in March 2011, mainly by the tsunami caused by the massive earthquake. At the many sewage treatments, the systems were shut down by the tsunami, numerous building structures were toppled by the wave force of the tsunami and electrical and mechanical machines were damaged by submersion. The many pipelines damaged by liquefaction throughout the region lost their ability to carry sewage as a result of plugging by sand after the occurrence of the earthquake. In order to solve technical problems and quickly restore sewage systems, a technical review committee of experts and specialists was set up to consider ways to prevent damage to sewage systems by earthquakes and tsunami. This Committee analyzed the characteristics of the damage and made four proposals on emergency response, emergency restoration, full-scale restoration, and new policies for tsunami countermeasures.
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Lei, Chun Xu, Qin Pu, Yong Qing Yang, and Ji Jian Jiang. "Research on Damage Detection and Calculation for Reinforced Concrete Bridge Piers." Applied Mechanics and Materials 361-363 (August 2013): 1110–14. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.1110.
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In order to reduce the potential threat to the Guanyindian highway bridge caused by the damaged RC bridge pier, some damage detection methods including surface inspection, core-drilling test, ultrasonic-rebound test and verticality measurement are used to assess the bridge’s damage condition. The finite element analysis software is employed to simulate the damaged bridge pier and to calculate its bearing capacity, thus providing technical data for the repair and future maintenance of the bridge pier. According to the results of damage detection and calculation, the verticality, the concrete strength, the bearing capacity and the crack width of the damaged No.1 bridge pier could meet the code’s requirement but the damaged regions on the bridge pier need to be repaired.
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Matysek, Piotr, and Michał Witkowski. "Analysis of the causes of damage to the RC floor slab in the underground garage." MATEC Web of Conferences 284 (2019): 06004. http://dx.doi.org/10.1051/matecconf/201928406004.
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The article presents the results of testing a damaged reinforced concrete slab, which is located in the underground garage constituting the two lowest floors of a residential and service building. During the tests numerous cracks in the slab were inventoried. Some cracks covered the entire thickness of the RC slab and floor layers made of synthetic resin. The result of these damages was penetration through the slab of water from molten slush and the need to limit the parking places on the lower level of the garage. Conducted analysis of technical documentation, analysis of damage morphology, control material tests and structure computations allowed assessment of the causes of existing damages to the floor slab and ability to develop recommendations regarding the methods of its repair.
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M. Ito, K. Sakai, S. Hata, and M. Takai. "Technical Notes: Damage to the Surface of Potatoes From Collision." Transactions of the ASAE 37, no. 5 (1994): 1431–33. http://dx.doi.org/10.13031/2013.28224.
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Huang, Meng, Lei Zhao, and Pan Li. "Earthquake Damage Prediction System of Buildings Group Based on Damage Factors Method." Applied Mechanics and Materials 341-342 (July 2013): 1496–99. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.1496.
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In view of our country needs to improve the ability of city earthquake disaster prevention, the paper proposes the earthquake damage prediction method of buildings group based on damage factors method. The system establishes the earthquake damage prediction of spatial database. Based on the earthquake damage factors method and the application of the GIS spatial analysis model, we predict earthquake disaster loss of city buildings and realized the Langfang city earthquake disaster prediction system. The realization of this system provides strong technical support for improving the ability of Langfang earthquake disaster prevention.
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Fitriani, Heni, M. Ade Surya Pratama, Yakni Idris, and Gunawan Tanzil. "Determination of prioritization for maintenance of the upper structure of truss bridge." MATEC Web of Conferences 276 (2019): 01036. http://dx.doi.org/10.1051/matecconf/201927601036.
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Bridge maintenance is one of the major issues of infrastructure problems. Deterioration of a bridge’s structure will continuously increase without proper maintenance. This condition will adversely affect the service life of a bridge. Moreover, the damage will also have a direct impact on structural and functional failure of the bridge. This paper aims at identifying the damages of truss bridges and determining the most significant criteria and sub-criteria used in prioritizing bridge maintenance. Analytical Hierarchy Process (AHP) was used to assess the most important criteria that give significant weight to bridge maintenance analysis. The objects of research were nine truss bridges with a wide range of types and levels of damage. It was found that there were approximately 900 m' of components damaged at the railing of Baruga Bridge and 227 m' truss damages due to poor quality of the galvanized paint. Furthermore, based on the analysis, the most significant criteria were the level of damage (27.6%), the technical aspects (25.7%), the finance (21%), the vehicle load (13.6%) and the resources (12%). The results of this research showed important findings in determining the priority scales for bridge repair and maintenance systems.
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Konior, Jarosław, Marek Sawicki, and Mariusz Szóstak. "Influence of Age on the Technical Wear of Tenement Houses." Applied Sciences 11, no. 1 (December 30, 2020): 297. http://dx.doi.org/10.3390/app11010297.
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The research presented in the article, which includes methods, models, and conclusions, contains synthetic and analytical model solutions concerning the problems of the technical maintenance and wear of residential buildings with a traditional construction. The cause and effect relationships between the occurrence of damage in the elements of tenement houses (treated as proof of their maintenance conditions), and the size of the technical wear of these elements were determined using a representative and purposefully selected sample of 102 residential buildings erected during the second half of the nineteenth and early twentieth centuries in Wroclaw’s “Downtown” district. Quantitative damage analysis, which was carried out using empirical (visual) methods of assessing the technical condition of a building, indicates the type and size of damage to the building’s elements that are characteristic for the relevant maintenance conditions. Research concerning the cause–effect relationships (“damage–technical wear”) in observed states allows for a numerical approach to the impact of building maintenance conditions on the degree of the technical wear of its components. The maintenance and exploitation conditions determine the degree of the technical wear of the elements of an old residential building. The exploitation condition of these buildings is manifested by damage to elements caused by water and moisture penetration, which is especially important for poorly maintained buildings. The article shows that the age of the elements of an old residential building with a traditional construction is of secondary importance in the process of the intensity of losing its serviceability value. It was calculated that no more than 30% of the damage of building components is explained by the passage of time, and it is therefore not age that determines the course of the technical wear of the elements of the analyzed tenement houses.
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Bosse, Stefan, Dennis Weiss, and Daniel Schmidt. "Supervised Distributed Multi-Instance and Unsupervised Single-Instance Autoencoder Machine Learning for Damage Diagnostics with High-Dimensional Data—A Hybrid Approach and Comparison Study." Computers 10, no. 3 (March 18, 2021): 34. http://dx.doi.org/10.3390/computers10030034.
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Structural health monitoring (SHM) is a promising technique for in-service inspection of technical structures in a broad field of applications in order to reduce maintenance efforts as well as the overall structural weight. SHM is basically an inverse problem deriving physical properties such as damages or material inhomogeneity (target features) from sensor data. Often models defining the relationship between predictable features and sensors are required but not available. The main objective of this work is the investigation of model-free distributed machine learning (DML) for damage diagnostics under resource and failure constraints by using multi-instance ensemble and model fusion strategies and featuring improved scaling and stability compared with centralised single-instance approaches. The diagnostic system delivers two features: A binary damage classification (damaged or non-damaged) and an estimation of the spatial damage position in case of a damaged structure. The proposed damage diagnostics architecture should be able to be used in low-resource sensor networks with soft real-time capabilities. Two different machine learning methodologies and architectures are evaluated and compared posing low- and high-resolution sensor processing for low- and high-resolution damage diagnostics, i.e., a dedicated supervised trained low-resource and an unsupervised trained high-resource deep learning approach, respectively. In both architectures state-based recurrent artificial neural networks are used that process spatially and time-resolved sensor data from experimental ultrasonic guided wave measurements of a hybrid material (carbon fibre laminate) plate with pseudo defects. Finally, both architectures can be fused to a hybrid architecture with improved damage detection accuracy and reliability. An extensive evaluation of the damage prediction by both systems shows high reliability and accuracy of damage detection and localisation, even by the distributed multi-instance architecture with a resolution in the order of the sensor distance.
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Dottori, Francesco, Rui Figueiredo, Mario L. V. Martina, Daniela Molinari, and Anna Rita Scorzini. "INSYDE: a synthetic, probabilistic flood damage model based on explicit cost analysis." Natural Hazards and Earth System Sciences 16, no. 12 (December 2, 2016): 2577–91. http://dx.doi.org/10.5194/nhess-16-2577-2016.
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Abstract. Methodologies to estimate economic flood damages are increasingly important for flood risk assessment and management. In this work, we present a new synthetic flood damage model based on a component-by-component analysis of physical damage to buildings. The damage functions are designed using an expert-based approach with the support of existing scientific and technical literature, loss adjustment studies, and damage surveys carried out for past flood events in Italy. The model structure is designed to be transparent and flexible, and therefore it can be applied in different geographical contexts and adapted to the actual knowledge of hazard and vulnerability variables. The model has been tested in a recent flood event in northern Italy. Validation results provided good estimates of post-event damages, with similar or superior performances when compared with other damage models available in the literature. In addition, a local sensitivity analysis was performed in order to identify the hazard variables that have more influence on damage assessment results.
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Solař, Jaroslav. "Protecting the Brickworks against Technical Seismicity." Advanced Materials Research 1122 (August 2015): 74–77. http://dx.doi.org/10.4028/www.scientific.net/amr.1122.74.
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In the Czech Republic, there are seismic territories with little natural seismicity only.On the other hand, the technical seismicity is frequently a pressing issue.Dynamic responses caused by the technical seismicity result in defects − in particular, in cracksin brickworks. This paper discusses possible technical and structural measures which eliminate effects of the technical seismicity and, in turn, reduce risk of damage to the brickworks..
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Kirillov, Andrey Mikhaylovich, and Mikhail Aleksandrovich Zav’yalov. "Synergetic approachto simulation of physical wear of engineering technical systems." Vestnik MGSU, no. 5 (May 2015): 93–102. http://dx.doi.org/10.22227/1997-0935.2015.5.93-102.
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In course of time in structural elements of engineering technical systems defects and damages are accumulated, which is caused by loadings and environmental influ- ence. The defects are any inconsistencies with normative documents, and damages are discontinuances of structure. The defects and damages lead to decrease of operational properties of structures (their bearing capacity, waterproofing, thermal resistance, etc. The occurrences of such character are called physical wear.In the article the authors show the possibility of phase trajectory use of the pro- cesses of physical wear, creep and cusp catastrophe for determinating the critical time- point, corresponding to the beginning of the system damage catastrophic growth. The alternative approach to the description of the processes of physical wear and creep of pavement consisting in comparison of asphalt concrete creep curve and the curve of the mathematical model of cusp catastrophe, is received. The applied synergetic approach gives us the chance to improve the existing and create new methods of pavement resource forecasting and assessment of physical wear of any technical constructions.
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Dražić, Jasmina, Igor Peško, Vladimir Mučenski, Milan Trivunić, Dragana Đorđević, and Nikolay Vatin. "Using ANN in Process of Seismic Damage Prediction for Residential Buildings." Applied Mechanics and Materials 725-726 (January 2015): 160–67. http://dx.doi.org/10.4028/www.scientific.net/amm.725-726.160.
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With the aim of planning preventive measures of seismic protection, estimation of possible damages on building constructions plays an important role. In order to predict the category of damage , a data base was formed out of the data from reports submitted by the commission of the Faculty of Technical Sciences in Novi Sad. The paper presents the research on the influence of the number and structure of input data and the comparative results of prediction of damage category on building constructions for two models of ANN (ANN-1 and ANN-2)
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Knopik, Leszek, Klaudiusz Migawa, and Andrzej Wdzięczny. "Profit Optimalization in Operation Systems." Polish Maritime Research 23, no. 1 (January 1, 2016): 93–98. http://dx.doi.org/10.1515/pomr-2016-0013.
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Abstract The aim of this study is to analyse the effect of reducing the number of secondary damage to profit from the work of a technical object. Considering the criterion function that describes the average profit from the work of a technical object in the operation system. The study analyses a model of profit optimization, in which the design criterion function is based on the properties of Poisson branch process. Criterion function that describes the average gain is considered in the work at sufficiently general factors. Profit lifting model from the work of a technical facility is numerically exemplified. For the analysed electrical subsystem, intervals of time between the initial damage have exponential distribution, and between secondary damage - gamma distribution. In the presented example, the ability of profit optimization in operation systems of technical objects is demonstrated.
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Leitner, Bohuš, Mária Lusková, Zdeněk Dvořák, and Eva Sventekova. "Fatigue Damage Prediction as a Part of Technical Systems Reliability Assessment." Key Engineering Materials 755 (September 2017): 131–38. http://dx.doi.org/10.4028/www.scientific.net/kem.755.131.
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Material fatigue of different technical systems parts belongs to the most frequent causes of boundary states occurrence and relating operation breakdowns. An extraordinary attention is dedicated to the prediction of fatigue damage processes in structures elements all over the world because breakdowns, caused by a fatigue failure, have often a character of catastrophe. There should be a dominant effort to bring conditions of calculation or experimental measures near to the working conditions in which the investigated system is exploited. A modern way of calculation of any technical systems (e.g. large mechanical or civil structures) therefore demands to respect dynamic and stochastic nature of all influencing working factors and related working loads. The main reason for it is prevention from their working breakdowns. The objective of the paper is general formulation of reliability of technical systems assessment, brief characteristic of basic areas to be taken into account as input into calculated prediction of technical systems fatigue damage level and analysis of risk items by its practical application in real operating conditions.
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Grigoras, Georgiana, Ionuţ Cristian Mihalache, and Eduard Edelhauser. "Technical Considerations on the Management of Coastal Areas Rehabilitation Projects." MATEC Web of Conferences 343 (2021): 07008. http://dx.doi.org/10.1051/matecconf/202134307008.
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Coastal erosion contributes to the loss of particularly valuable land, which can damage coastal ecosystems and cause economic and social damage to the area where they occur. Coastal erosion is a natural process that affects shores around the world. The article present aspects of coastal erosion in Romania as well as some solutions proposed to reduce this phenomenon. Submerged structures are exposed to erosion therefore a close monitoring is necessary. A malfunction will result in the damage of the structure as well as endangering marine wildlife. The proposed solutions are meant to protect the coastal area against erosion, protecting the shore, adjacent land and ecosystems. These solutions will also protect the economic infrastructure and social objectives endangered by marine erosion. A monitoring program will be implemented for a medium and long term, supporting the maintenance operations.
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Miyamoto, H. Kit, Amir S. J. Gilani, and Ken Wong. "Massive Damage Assessment Program and Repair and Reconstruction Strategy in the Aftermath of the 2010 Haiti Earthquake." Earthquake Spectra 27, no. 1_suppl1 (October 2011): 219–37. http://dx.doi.org/10.1193/1.3631293.
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The January 2010 Haiti earthquake resulted in over 230,000 deaths, affected 3 million people, and damaged or collapsed over 200,000 structures. An unprecedented earthquake damage assessment project by a joint operation of the Haitian Ministry of Public Works, the United Nations Office of Project Services, the Pan American Development Foundation, and the authors was undertaken with three strategic goals: (1) rapid damage assessment, (2) reconstruction database development, and (3) upgrade the technical capabilities of Haitian engineers. A modified version of the Applied Technology Council's ATC-20 technical platform, accounting for Haitian building design, was developed. As part of this program, PDA-based data collection techniques and quality-assurance programs were implemented, and approximately 600 Haitian engineers were trained. As of March 2011, approximately 400,000 buildings had been inspected. This database was used to develop: (1) repair strategies for yellow-tagged structures, and (2) reparability, reconstruction, and demolition assessments or red-tagged structures. This program could also be extended as a platform for a seismic damage evaluation and reconstruction strategies in other parts of the world.
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Ralston, Ashley, Patti Ogden, Michael H. Kohrman, and David M. Frim. "In situ repair of vagus nerve stimulator lead damage: technical note." Journal of Neurosurgery: Pediatrics 18, no. 6 (December 2016): 679–82. http://dx.doi.org/10.3171/2016.6.peds169.
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Vagus nerve stimulators (VNSs) are currently an accepted treatment for intractable epilepsy not amenable to ablative surgery. Battery death and lead damage are the main reasons for reoperation in patients with VNSs. In general, any damage to the lead requires revision surgery to remove the helical electrodes from the vagus nerve and replace the electrode array and wire. The electrodes are typically scarred and difficult to remove from the vagus nerve without injury. The authors describe 6 patients with VNSs who presented with low lead impedance on diagnostic testing, leading to the intraoperative finding of lead insulation disruption, or who were found incidentally at the time of implantable pulse generator battery replacement to have a tear in the outer insulation of the electrode wire. Instead of replacement, the wire insulation was repaired and reinforced in situ, leading to normal impedance testing. All 6 devices remained functional over a follow-up period of up to 87 months, with 2 of the 6 patients having a relatively shorter follow-up of only 12 months. This technique, applicable in a subset of patients with VNSs requiring lead exploration, obviates the need for lead replacement with its attendant risks.
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Konior, Jarosław, Marek Sawicki, and Mariusz Szóstak. "Damage and Technical Wear of Tenement Houses in Fuzzy Set Categories." Applied Sciences 11, no. 4 (February 6, 2021): 1484. http://dx.doi.org/10.3390/app11041484.
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The results and conclusions of the research presented in the article concern the topic of the technical maintenance and wear of traditionally erected residential buildings. The cause and effect relations between the occurrence of damage to the elements of tenement houses, which are treated as an expression of their maintenance conditions, and the size of the technical wear of these elements were determined in a representative and purposefully selected sample of 102 apartment houses built in the second half of the 19th and early 20th centuries in the Wroclaw, Poland downtown district “Srodmiescie”. Recognition of the impact of the maintenance of residential buildings on the level of their technical wear was carried out using quantitative methods from fuzzy set categories, and also with the use of the authors’ own model. The created model, based on the Zadeh function, was created in fuzzy conditions for the purpose of assessing the degree of damage to selected building elements. The treatment of the problem with regard to fuzzy criteria allowed for the synthesis of elementary criteria, which give the greatest approximations at the technical research stage of a residential building, into a global assessment of the degree of the wear of its elements. Moreover, it also significantly reduced the subjective factor of this assessment, which had a significant impact on the results of the research obtained in the case of good, medium and poor conditions of tenement houses. It was proven that the conditions of maintenance and use of buildings determine the amount of technical wear of their elements. The state of exploitation of the examined tenement houses is reflected in the mechanical damage to the internal structure of the elements (determined in fuzzy categories). This damage has a significant frequency and cumulative effects, and is characteristic for buildings with satisfactory and average maintenance.
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V., Voropai, and Chebanov V. "Analysis of the wagons-tanks technical condition of the chemical industry park." Artificial Intelligence 24, no. 3-4 (December 27, 2019): 82–92. http://dx.doi.org/10.15407/jai2019.03-04.082.
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The article brings statistical data on the technical condition of the wagons-tanks of one of the largest enterprises of the Ukrainian chemical industry. The technique of monitoring the technical condition is explained, the classification of damage to wagons-tanks depending on the stages of the life cycle is proposed, the distribution of damage depending on the stages of the life cycle is shown. The information set forth in the article provides the basis for conducting technical diagnostics in order to justify the further term of maintenance
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Fîță, Daniel N., Crina Barb, Dragoș Păsculescu, and Leon Pană. "The description and evaluation of technical incident risk on the National Power Grid in the context of power safety growth." MATEC Web of Conferences 290 (2019): 12010. http://dx.doi.org/10.1051/matecconf/201929012010.
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In the context of increasing the importance of power safety for national security, the security of power systems within the National Power Grid, must be an objective of major and constant interest for the national transmission and system operator. Evolutions in recent decades have shown the increase in vulnerabilities caused by: failure, destruction and/or disruption of technological infrastructures caused by acts of terrorism, natural disaster, negligence in service, work accidents of technical nature, technical incidents, criminal activities and lack of investment. For the critical analysis of the National Power Grid, 4 (four) possible risk scenarios with effects of instability of the power safety and with major effects on the national security were identified, described and evaluated: Risk Scenario 1 - Technical Incident, Risk Scenario 2 - Damage: Technical Incident Sequence, Risk Scenario 3 - Damage: Natural Disaster, Risk Scenario 4 - Damage: Terrorist Attack. The purpose of the paper is to describe and evaluate the Risc Scenario 1- Technical Incident (which is most prevalent) on the power substations and to prevent potential disturbances in the safety of the power supply to consumer.
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Nowogońska, Beata. "Technical Aspects of Renovation of the 16th-Century Roof Truss." Civil and Environmental Engineering Reports 29, no. 4 (December 1, 2019): 79–88. http://dx.doi.org/10.2478/ceer-2019-0045.
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Abstract The main causes of damage to wooden structures in historic buildings are the effects of weather conditions and related aging processes. In the case of the roof truss of a 16th-century church in Lubów, the technical condition is additionally affected by leaking roof covering, damaged gutters, downpipes and flashings. Some elements of the wooden structure underwent biological corrosion, which lost its strength values. The roof truss of a 16th-century church in Lubów comes from the period of construction of the building. Due to the historic values of the structure of the truss, the renovation works do not intervene when the works would change its form, shape and type. The truss renovation is based on the assumption of maintaining original construction solutions, location of elements and cross-sections.
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Li, Jian Yang, Hong Yan Wang, Qiang Rui, and Huang Jie Hong. "Research on Cumulative Damage for Airborne Vehicle under Landing Impact." Advanced Materials Research 706-708 (June 2013): 1516–19. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.1516.
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The damage of structure and technical performance of vehicle were affected by the impact at landing process of airborne. For researching the cumulative damage of airborne vehicle under impact, airdrop tests would consume lots of manpower and material resources. So numerical simulation offered one of available means for this problem. Based on the finite element model of vehicle and airbags, the calculation and assessment method for cumulative damage under landing impact time after time was proposed. The creditability of finite element model was validated by airborne test under typical condition. Associated with Lemaitre damage model and the damage evolution law of the material, the cumulative damage of the structure of vehicle was calculated. The results would provide theoretical reference and technical guidance for the design and maintenance of the airborne vehicle.
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Lindstedt, Paweł, and Tomasz Sudakowski. "Identification of Parametric and Momentary Damages on the Basis of Lindeberg-Levy’s Model." Solid State Phenomena 260 (July 2017): 249–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.260.249.
Full textAbstract:
Article presents the innovative method for the assessment of reliability condition of the exploited system, based on the appropriate analysis of changes in the current parameters of technical condition aRb and the regulation condition aRc, determined from the compressed condition equation (1 and 2). While analyzing the course of momentary parameters for technical condition aRb and the regulation condition aRc, it was observed that the parametric and momentary damages can be identified on the basis of quantitative relations between momentary threshold value dpr and corresponding momentary permissible value dprdop, which are calculated from equation (7, 8, 9) resulting from Lindeberg-Levy’s theorem. It is assumed that the damages are prevailing, when for the moment θi: dpri>dpr dopi. With the number of damages (damage map), reliability parameters for each moment of exploitation of technical object (before the catastrophic damages will occur) can be determined. Parametric damages (expected lifetime E(T) and standard deviation of expected lifetime σE(T) provides the reasonable information for the appropriate planning of the servicing of exploitative objects.
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Lindstedt, Paweł, Tomasz Sudakowski, and Artur Kułaszka. "The New Approach to Identification of Parametric and Momentary Damages on the Basis of Lindeberg – Levy’s Model." Journal of KONBiN 43, no. 1 (October 1, 2017): 5–21. http://dx.doi.org/10.1515/jok-2017-0037.
Full textAbstract:
Abstract The new approach for the assessment of reliability condition of the exploited system, based on the appropriate analysis of changes in the current parameters of technical condition aRb and the regulation condition aRc, determined from the compressed condition equation (1 and 2). While analyzing the course of momentary parameters for technical condition aRb and the regulation condition aRc, it was observed that the parametric and momentary damages can be identified on the basis of quantitative relations between momentary threshold value dpr and corresponding momentary permissible value dpr dop, which are calculated from equation (7, 8, 9) resulting from Lindeberg–Levy’s theorem. It is assumed that the damages are prevailing, when for the moment θi: >dpri> dpr dopi. With the number of damages (damage map), reliability parameters for each moment of exploitation of technical object (before the catastrophic damages will occur) can be determined. Parametric damages (expected lifetime E(T) and standard deviation of expected lifetime σE(T) provides the reasonable information for the appropriate planning of the servicing of exploitative objects.
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Badica, Marius Nicolae, Carmen Matilda Marinescu (Badica), Silvian Suditu, and Monica Emanuela Stoica. "Identification, evaluation and minimization of industrial risks relating to gas pipelines." E3S Web of Conferences 225 (2021): 02004. http://dx.doi.org/10.1051/e3sconf/202122502004.
Full textAbstract:
The security of the functioning systems represents, through the four specific components (security, availability, reliability and maintenance), a basic component of the processing requirement. Monitoring of all specific intrinsic and operating parameters of oil and gas pipelines can be technically detected and diagnosed by: –existing defects; –rapid and effective intervention to eliminate the damage, if they occurred. To establish the maintenance programs that can ensure the proper functioning of the gas pipelines, it is necessary to establish their technical status. The research done helps reduce the risk of gas pipeline damage.
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Wdzięczny, Andrzej, and Łukasz Muślewski. "Analysis of the Influence of Carried Out Repairs Efficiency on Transport Means Operational Reliability." Journal of Konbin 14-15, no. 1 (January 1, 2010): 359–76. http://dx.doi.org/10.2478/v10040-008-0192-6.
Full textAbstract:
Analysis of the Influence of Carried Out Repairs Efficiency on Transport Means Operational Reliability The Maintenance factors and destructive processes which affect systems and elements of technical objects result in undesirable changes of values of their functional features, which causes damages. A damage to a technical object has been defined as exceeding permitted boundary values by significant features characterizing their elements. On the basis of analysis results of the author's own research concerning damages to means of transport, used in real transport systems, it has been found that these damages are the effect of different forcing factors. A certain number of damages is caused by natural wear of machine elements, whereas other damages can occur in result of ineffective repair of a previous damage. Thus, the so called recurrent (secondary) damages occur in a short period of time. On the basis of literature and maintenance and operation analysis results it was found that the most frequent cause of recurrent damage occurrence is improper quality of repairs of the analyzed means of transport. Primary damages are not dependent on each other and they appear randomly, whereas recurrent damages do depend on each other and their occurrence is the conditioned by earlier occurrence of a repair, and above all, by its poor quality. In the paper, a method for evaluation the influence of carried out repairs on transport means operational reliability, has been presented On the basis of the analysis of the moments in which damages to the means of transport and of the time interval lengths between them a simulation model representing a real stream of the damages was built, which enables to evaluate influence of the efficiency of the performed repairs of the means of transport in the real transport system
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Woźny, Piotr, and Józef Błachnio. "Analysis Of Damage Arising From Exploitation Of The Aircraft." Journal of KONBiN 32, no. 1 (December 1, 2014): 5–18. http://dx.doi.org/10.2478/jok-2014-0027.
Full textAbstract:
Abstract During exploitation, due to a variety of reasons, aircrafts are damaged or suffer from different failures. In the process of operation, using appropriate methods of diagnosis, failure, damage, and relative deregulation of individual elements or units can be detected. For this purpose, one can apply a number of indirect diagnostic methods with the use of recorded diagnostic signals or a direct diagnosis with the use of non-destructive methods. The proper identification of the technical condition allows to determine the causes of irregularities and take actions aimed at preventing their occurrence. The article presents the types of exploitation damage of a multi-purpose aircraft. In addition, the criteria for the division of damage and research methods of the causes of damage are presented. Furthermore, an analysis of the scope of activities to be performed during the research of causes of damage to the aircraft is made.
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Lindstedt, Paweł, and Tomasz Sudakowski. "The Method of Assessment of Suitability of the Bearing System Based on Parameters of Technical and Adjustment State." Solid State Phenomena 199 (March 2013): 73–78. http://dx.doi.org/10.4028/www.scientific.net/ssp.199.73.
Full textAbstract:
In the operation process, a complex method evaluating technical condition and regulatory status (activities) of the bearing system is used. The method of determination of technical parameters and operating status is known. This is achieved through the interaction of two coupled equations and [2, 3, 7]. It was demonstrated that, on the basis of waveform parameters of technical condition and operating status (respectively), the identification of parametric and momentary damage can be carried out. During the identification process of parametric and momentary damage, it is assumed that damage arises when a parameter threshold value at the time of operation is greater than current permissible value. It is shown how the threshold value of the parameter and its current permissible value, taking into account the number of measurements, are determined.
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Xu, Tao. "Fatigue of Ship Structural Details—Technical Development and Problems." Journal of Ship Research 41, no. 04 (December 1, 1997): 318–31. http://dx.doi.org/10.5957/jsr.1997.41.4.318.
Full textAbstract:
During the past five years, a joint industry-government sponsored research project titled the Ship Structural Maintenance Project (SMP) has been conducted at the Department of Naval Architecture & Offshore Engineering, University of California at Berkeley. As a part of this project, the fatigue damage of ship structural details has been extensively studied. This paper summarizes the technical development in fatigue assessment of ship structural details developed during this project. In the fatigue resistance model, the fatigue damage evaluation of structural details was based on a stress range/number-of-cycles-to-failure (SN) approach in which the nominal stress procedure and the hot spot stress procedure were employed. The fatigue assessment of cracked structural details was based on a cracked SN approach developed by a hybrid SN-FM (fracture mechanics) methodology. This cracked SN approach was further developed to incorporate load-shedding effects. In the fatigue loading model, a new formula for the damage correction factor associated with a wide-banded load process was developed. The random loading sequence for ship service was addressed. Fatigue reliability models were then reviewed and the different fatigue reliability updating procedures were evaluated. These techniques were employed in the fatigue analysis of structural details in three tankers. Analysis results from these three ships were presented to illustrate the technical developments and problems associated with fatigue assessment of ship structural details.
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Telenkov, E. E. "Assessment and Management of Technical and Production Risks in Industry." Issues of Risk Analysis 17, no. 6 (December 29, 2020): 38–49. http://dx.doi.org/10.32686/1812-5220-2020-17-6-38-49.
Full textAbstract:
Industrial companies have always paid close attention to the continuity of production and technological processes. Technical and production risks, such as equipment damage, accidents, natural disasters can have a significant impact on production processes, lead to injury to people, environmental pollution. Managing these risks means investing substantial funds in upgrading, repairing and reconstructing assets. However, these investments have different economic effects. Proper prioritization of risks and measures for their management, based on the concept of risk-income, proposed in this article, can significantly improve the efficiency of risk management, reduce the degree of uncertainty, protect the organization from catastrophic damage.
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Wang, Dong Ming. "Research on Urban Earthquake Damage Prediction Virtual Simulation System." Applied Mechanics and Materials 256-259 (December 2012): 2034–39. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2034.
Full textAbstract:
Earthquake damage prediction is a fundamental topic for working out the urban earthquake disaster prevention planning, improving earthquake emergency plans and preparedness, establishing seismic fortification criterion, and achieving the goal of earthquake preparedness and disaster reduction. It’s significant to carry out urban seismic damage prediction. To display and apply the results of damage prediction more scientifically, intuitively, integrally, objectively and fully, the technical methods and ideas of using virtual simulation technology are proposed and studied, and the system requirements, functional design and structural framework are also described in this paper. These studies will provide effective technical support for the damage prediction to serve the urban disaster reduction, improvement of people's awareness of disaster prevention and refuge and so on, and have good application prospects.
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Nienartowicz, Beata, and Bogdan Przybyła. "Damage to plastic pipelines and its consequences." E3S Web of Conferences 45 (2018): 00070. http://dx.doi.org/10.1051/e3sconf/20184500070.
Full textAbstract:
The paper will present the issue of damage to plastic pipelines - especially thermoplastic ones, while also considering the aspect of testing their technical condition using standard diagnostic tools. The results of the strength analysis for the effects of local overheating of the sewage pipe wall - as an effect of inflow of sewage with a high temperature, will also be presented.
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Gizzi, F. T., V. Lapenna, N. Masini, and E. Rizzo. "Historical damage pattern and causes of differential damage: an approach based on combining geophysical prospecting, geological and historical-technical data." Advances in Geosciences 19 (November 14, 2008): 23–32. http://dx.doi.org/10.5194/adgeo-19-23-2008.
Full textAbstract:
Abstract. We describe a multidisciplinary and interdisciplinary method to analyse the causes of differential macroseismic effects caused by an earthquake in a historical town. We illustrate the method with a case study based on analysing the damage caused by the 1930 Irpinia earthquake (Me=6.7) in Melfi, a town in southern Italy. A damage pattern map was already available for this site. To understand the anomalies of Melfi damage, we used an integrated approach that combines geological surveys, geophysical prospecting and analysis of unpublished technical-historical data. Geo-electrical prospecting was adopted to infer the geological set-up and to estimate the thickness of shallow deposits. The results of the geophysical surveys were compared with detailed geological information derived from both in situ surveys and boreholes. Finally, cross-correlation among these data and technical reports coeval to the earthquake allowed us to create a complete picture of the possible causes of uneven damage.
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Махутов, Nikolay Makhutov, Резников, and D. Reznikov. "Multilevel Survivability Assessment of Complex Technical Systems with Account for Large-Scale and Structural Hierarchy of Damages and Destruction Accumulation Processes." Safety in Technosphere 5, no. 4 (August 25, 2016): 3–17. http://dx.doi.org/10.12737/23757.
Full textAbstract:
Ensuring survivability, defined as the ability of the technical system in a damaged state, to carry out (in full or in part) their
duties and avoid catastrophic damage, is an important element of the complex security problems technosphere objects.
In this paper are considered the basic approaches to quantitative assessment of complex technical systems’ survivability
taking into account that damage accumulation and fracture processes are developed along a broad range of the system’s
scales: starting from the nano-scale level and up to the global structural level of the system. Three basic scales were
single out from the entire spectrum of the system’s scales. These scales allow describe the system failure process. A set of
indexes describing systems’ survivability at the specified above scale levels has been presented. The next basic approaches
to quantitative assessment of complex systems’ survivability have been developed: approaches based on deterministic
and probabilistic assessments of system’s residual strength after macro-defects initiation, as well as integral approaches
based on risk assessment and on estimation of reducing of system’s key strength characteristics when its damage level has
increased.
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Konieczny, Kazimierz, and Leszek Słowik. "An Example of Failure of an Office Building in Upper Silesia." MATEC Web of Conferences 284 (2019): 03003. http://dx.doi.org/10.1051/matecconf/201928403003.
Full textAbstract:
The paper describes an example of a failure of an office building in Upper Silesia, Poland. Following a technical description of the building, the authors describe the damage to the building structure and damage development. The causes of damage of the building structure are assessed and discussed. The main cause is a long-term failure of the water supply system that resulted in deterioration in the foundation subsoil. The investigations also showed previously unidentified subsoil deformation left after old mining exploitation. The paper concludes with the discussion of the ongoing restoration of the technical efficiency of the building.
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Xing, Jie, and Yin Xian Duo. "Virtual Reality Simulation of High Firing Rate Weapon." Advanced Materials Research 711 (June 2013): 608–12. http://dx.doi.org/10.4028/www.scientific.net/amr.711.608.
Full textAbstract:
In order to analyze the typical target damage efficiency of high speed aerial gatling-gun in different tactical environments, an Efficiency Evaluation System of Gatling-Gun based on STAGE has been researched and developed. It can get the damage probability of the target by setting the combat environment, the technical parameters of the weapon system, the operating parameters of the typical target and other technical indexes, and reconstruct the attack process through three-dimensional simulation. The technical parameters of the weapon system can be modified so as to achieve ideal damage effect of the typical target.It can be a reference for the configuration of the weapon platforms as well as its next research and develop goals.The reliability of the simulation model has already been verified through simulation analysis of intercepting flying targets of 0-2 Mach taken in a variety of radio frequencies.
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Bukała, Michał, Andrzej Chyła, Leopold Kruszka, and Paweł Muzolf. "Technical diagnostics of the historic apartment house located at No. 31 in Dobra street in Warsaw." MATEC Web of Conferences 174 (2018): 03011. http://dx.doi.org/10.1051/matecconf/201817403011.
Full textAbstract:
This paper presents a case study of investigating damage and assessing the current detailed technical state of the historic apartment house located at No. 31 in Dobra Street in Warsaw. The purpose of this assessment is to determine the possibility of the reconstruction of its last overground storey and the utility attic. Moreover, the impact of the second underground line construction process and the influence of transport vibrations caused by both the street traffic and the underground on the damage of the supporting structure of the building is determined. The study was conducted in order to prepare the design for the planned last overground storey reconstruction considering the influence of the construction process on the adjacent buildings and the surrounding urbanized area. The study of the building documentation and the field investigation on damage in the existing building allow the authors to conclude that the current technical condition of this building does not exclude the possibility of making the superstructure of this building. Moreover, the results of the carried out vibrations transmitted by the ground to the load-bearing structure of this building show that neither the transport-caused vibrations nor the noise do not cause a harmful effect both on the damaged masonry supporting structure of this building, as well as on its residents. The conditions of reconstruction of this historic building are also specified in this paper.
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Li, Yu Ming, Hong Bai Bai, and Jian Chun Yang. "Fatigue Damage Character of Metal Rubber Material." Advanced Materials Research 457-458 (January 2012): 1159–62. http://dx.doi.org/10.4028/www.scientific.net/amr.457-458.1159.
Full textAbstract:
The damaging variable was defined firstly, mean while the fatigue character of metal rubber was discussed. Then the relationship between damaging variable and cyclic loading times had been summarized through fatigue tests. Finally observed the pattern of fracture face, cavities and flaws of the fatigue wires inner the metal rubber components with electronic scanning microscope, some technical methods of improving the wearing resistivity of metal rubber material had been brought forward.
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Kosoń-Schab, Agnieszka, and Janusz Szpytko. "Magnetic Metal Memory in the Assessment of the Technical Condition of Crane Girders for the Needs of Safety." Journal of KONBiN 49, no. 4 (December 1, 2019): 49–73. http://dx.doi.org/10.2478/jok-2019-0075.
Full textAbstract:
Abstract With the passage of time of exploitation of means of technological transport, their degradation takes place and the threat to operational safety increases. The source of development of fatigue damages of gantry crane girders are areas of stress concentration caused by loads. The subject of the publication is to determine the possibility of diagnosing potential damage sites of the overhead travelling crane (girders) by magnetic metal memory (MPM). As a result of the test with the use of the TSC-7M-16 ferrite magnetometer, stress concentration areas were determined in which processes leading to the reduction of material strength or damage to the material structure may take place. Residual tangential magnetic field distributions and normal components of their gradients were determined. A magnetogram database for the needs of girder diagnostics was created.
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Zhang, Feng Chun. "Study on Semi-Rigid Roadbase Material Diseases Damage." Advanced Materials Research 446-449 (January 2012): 494–97. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.494.
Full textAbstract:
Abstract: the cracking of semi-rigid material may be believed for fatigue damage, temperature and dry shinkage, from above the analysis, and based on the disease prevention of the semi-rigid pavement, some treatment measures have been devoted, this study results for the semi-rigid material can provide a better technical support.
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Falzon, B. G. "Impact damage and repair of composite structures." Aeronautical Journal 113, no. 1145 (July 2009): 431–45. http://dx.doi.org/10.1017/s0001924000003109.
Full textAbstract:
Abstract This paper gives an overview of the work carried out in a GARTEUR (Group for Aeronautical Research and Technology in Europe) program, under the chairmanship of the author, to develop and validate analytical and numerical methods to characterise real impact damage in composite structures, particularly those designed to sustain load in a postbuckled state, and to study the durability of bonded repairs. GARTEUR is an inter-governmental agreement between the seven European countries with the largest direct employment in the Aerospace industry, to mobilise scientific and technical knowledge between the member countries. A number of Action Groups have been launched, since GARTEUR’s inception in the early 1970s, to address specific technical issues of interest to the participating members. The research presented in this paper was performed under Action Group 28 with partners from ONERA, EADS-CCR (France), DLR, AIRBUS-Deutschland, EADS-M (Germany), CIRA (Italy), INTA (Spain), SICOMP, Saab, (Sweden), NLR (The Netherlands), QinetiQ, BAE Systems, Imperial College London and the University of Sheffield (United Kingdom). The Action Group tasks were divided into four Work Elements (WEs): WE1-Prediction and characterisation of impact damage, WE2-Postbuckling with delamination, WE3-Repair and WE4-Fatigue. This paper outlines the main developments and achievements within each Work Element.
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Konior, Jarosław, and Tomasz Stachoń. "Bayes Conditional Probability of Fuzzy Damage and Technical Wear of Residential Buildings." Applied Sciences 11, no. 6 (March 11, 2021): 2518. http://dx.doi.org/10.3390/app11062518.
Full textAbstract:
The purpose of the research presented in the article is to identify the impact of the processes associated with the broadly understood maintenance of old residential buildings with a traditional construction on the size and intensity of the wear of their elements. The goal was achieved by analyzing the symptoms of the technical wear process, which involved the understanding of the mechanism of the occurrence of the phenomenon of damage, and the identification of the size and intensity of the damage to the elements of the evaluated buildings. The consequence of systematizing the most important processes that influence the loss of functional properties of residential buildings was the creation of the authors’ own qualitative model and its transformation into a quantitative model. This, in turn, enabled a multi-criteria quantitative analysis of the cause and effect phenomena—“damage-technical wear”—of the most important elements of downtown tenement buildings to be carried out in fuzzy conditions, i.e., uncertainty concerning the occurrence of damage and the wear process. The following key question was answered in the subjective expert assessment of the technical condition of an evaluated residential building: what is the probability of the wear of an element, which may be more or less correlated with its average maintenance conditions, or more simply, what is the probability that the element is more or less (approximately) worn? It has been proven that the conditional probability of the technical wear of an element in relation to its damage increases with the deterioration of the maintenance conditions of the building, and this increase is very regular, even in the case of different building elements. This probability is characterized by a low standard deviation and a narrow range of the dispersion of results in the case of various elements with regards to each of the considered building maintenance conditions.