Journal articles on the topic 'Buildings – Defects'
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Krakhmalnyy, Timofey, and Sergej Evtushenko. "DEFECTS AND DAMAGES OF REINFORCED CONCRETE COLUMNS OF INDUSTRIAL BUILDINGS." Construction and Architecture 8, no. 2 (August 1, 2020): 5–10. http://dx.doi.org/10.29039/2308-0191-2020-8-2-5-10.
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This article is a continuation of the authors ' series of articles on defects and damage to building structures of industrial buildings. This article presents typical defects and damages of precast and monolithic reinforced concrete columns of industrial buildings. The possible reasons for the formation of typical defects, the consequences of which may lead to their development, are considered, and recommendations for the elimination of identified damages are given. In conclu-sion, the article analyzes the characteristic zones of defect formation in rein-forced concrete columns of buildings in accordance with the method proposed earlier by the authors.
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Krakhmalnyy, Timofey, and Sergej Evtushenko. "DEFECTS AND DAMAGES OF METAL CRANE BEAMS OF INDUSTRIAL BUILDINGS." Construction and Architecture 9, no. 3 (October 29, 2021): 11–15. http://dx.doi.org/10.29039/2308-0191-2021-9-3-11-15.
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The article provides an analysis of typical and unique defects and damages of crane beams, which is a continuation of the series of articles by the authors about defects and damages of industrial buildings. Previously, articles on typical defects of industrial buildings have already been published: ground bases, foundations, reinforced concrete columns, metal columns, vertical connections and wall panels. Most of the defects are explained by photos. At the end of the article, an analysis of the characteristic zones of defect formation in the metal crane beams of industrial buildings is given, which allows laying the foundation for the development of an automated control system (ACS) for the life cycle of an industrial building.
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Hatfield, Boodle. "DEFECTS IN BUILDINGS:." Facilities 7, no. 1 (January 1989): 9–11. http://dx.doi.org/10.1108/eb006475.
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N.F. Zuraidi, S., M. A. Abdul Rahman, and Z. A. Akasah. "Measuring the Level of Defect Condition in the Museum Building." International Journal of Engineering & Technology 7, no. 4.14 (December 24, 2019): 396. http://dx.doi.org/10.14419/ijet.v7i4.14.27692.
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Assessment of buildings is one of the main components that are essential to assess the condition of the building. Without evaluation, it is difficult to determine the current condition of a heritage building, so failure to check can contribute to future assets. The objective of this study is to assess the level of defect condition in a heritage building. This study has selected nine buildings of the museum as a place of study. The location of the museum building is located in three states of Kelantan, Terengganu, and Pahang. All of the museum buildings have been implemented by using Building Defect Assessment (BDA) and used as a survey tool to assess the level of disability at museum building. Defects of each element in the building of the museum have been recorded. As a result of the BDA suggests that score full points used to provide the level of evaluating the overall condition of the museum building is good, and the need for action to maintenance requirements such as monitoring, repair, a replacement for preventing defects or serious damage.
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Milion, Raphael N., Thaís da C. L. Alves, José Carlos Paliari, and Luisa H. B. Liboni. "CBA-Based Evaluation Method of the Impact of Defects in Residential Buildings: Assessing Risks towards Making Sustainable Decisions on Continuous Improvement Activities." Sustainability 13, no. 12 (June 9, 2021): 6597. http://dx.doi.org/10.3390/su13126597.
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Evaluating the impact of defects in buildings and ranking the most impactful ones enables construction companies to better choose which paths to take in light of continuous improvement activities to support more sustainable decisions regarding the design and operation of buildings. As a result, the risks of the different choices are more clearly identified while assessing all tangible and intangible aspects of residential building defects in a structured way. Although recent studies on managing construction defects in residential buildings have focused on monetary losses associated with maintenance activities based on the defect’s frequency and severity, these studies do not take into account the levels of customer satisfaction. To address this gap, this paper proposes a novel evaluation method of the impact of defects to support decision-making in managing defect occurrences in residential buildings. The goal is to rank the defects’ impact based on a combination of some critical aspects: frequency of occurrence, financial considerations on repairing such defects, the impact that these defects have on customer satisfaction, and the cost and complexity of preventing and minimizing these defect occurrences through continuous improvement activities. The method consists of a structured set of steps that use data from technical assistance departments and customer satisfaction surveys, where information about the users’ level of satisfaction and the occurrence of defects is available. In this paper, data obtained from a construction company were used to test and validate the proposed method. The method also examines the challenges and barriers associated with the technique and points out that difficulties in acquiring reliable data are a bottleneck for making conscious and sustainable decisions to address construciton defects. Moreover, the case study results highlight essential capabilities needed by companies to correctly assess the impact of defects, such as correctly logging data in a structured database and having skilled personnel to verify defects users might have complained about. The paper ends by proposing a set of guidelines to use the method and stressing that structured methods for decision-making are crucial to analyze construction defects in a structured way while also incorporating the user’s perspective. The proposed method is expected to improve sustainable managerial decisions where economic, environmental, social, and technical risks can be accounted for to enhance the quality of projects from the customer’s perspective. Such analysis can help optimize and prioritize the use of resources and minimize the economic impact of activities on the construction company.
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K C, Prof Santosh. "Detection of Building Defects Using CNN." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 31, 2021): 2727–31. http://dx.doi.org/10.22214/ijraset.2021.36960.
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Detection of defects together with cracks and spalls on wall surface in high-rise buildings may be a crucial task of buildings’ maintenance. purchasers area unit progressively searching for quick and effective suggests that to quickly and often survey and communicate the condition of their buildings in order that essential repairs and maintenance work will be tired a proactive and timely manner before it becomes too dangerous and big-ticket. If left unseen and untreated, these defects will considerably have an effect on the structural integrity and also the aesthetic side of buildings, timely and efficient strategies of building condition survey area unit of active want for the building house owners and maintenance agencies to switch the time- and labour-consuming approach of manual survey. so mistreatment the applying of deep learning technique of convolutional neural networks (CNN) in automating the condition assessment of buildings. the main target is to automatic detection and localisation of key defects arising from damp, patches, stains, cracks in buildings from pictures.
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Bunkholt, N. S., L. Gullbrekken, B. Time, and T. Kvande. "Process induced building defects in Norway – development and climate risks." Journal of Physics: Conference Series 2069, no. 1 (November 1, 2021): 012040. http://dx.doi.org/10.1088/1742-6596/2069/1/012040.
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Abstract The SINTEF building defects archive is an important source to knowledge on building defects in Norway. This study presents a review of defects investigated by SINTEF in the period 2017–2020, including 175 defect cases registered in 125 reports. The main goal is to understand the primary causes of process induced building defects today and which building elements may be considered as risk spots. The review shows that almost 3 of 4 defects is related to moisture, caused by sources as precipitation, condensation of humid indoor air or built-in moisture. Defects associated with the building envelope make up more than 70% of the cases, of which most defects are linked to exterior wall or roof constructions. The results from the present study have been compared to a review of defects reported in the archive during the period 1993–2002. The comparison reveals that the share of damages caused by precipitation is almost doubled, while the share of damages caused by humid air from the interior is approximately halved. The results imply that climate adaptation of buildings is important. As climate change causes more precipitation with higher intensities, the load on buildings increases and a larger focus on risk reduction and protection towards penetration of water from the outside is required.
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Gritėnas, Lukas, and Jolanta Tamošaitienė. "ASSESSMENT OF DEFECTS IN MASONRY WALLS FOR THE RESIDENTIAL BUILDINGS IN LITHUANIA." Engineering Structures and Technologies 13, no. 1 (January 11, 2023): 31–36. http://dx.doi.org/10.3846/est.2021.18457.
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This paper presents the assessment of masonry wall defects in residential buildings in Lithuania. The created model is based on a multi-attribute evaluation of wall defects in residential buildings in Lithuania, the determination of their optimality criterion values calculated according to Laplace’o rule. The developed defect assessment algorithm has advantages to be used by repair contractors and people or companies performing building maintenance. First, the model allows planning the course of repair works properly. When carrying out repair work in a building with recurring defects that mainly occur at the building site, proper workflow and its planning are essential. The proposed model could be applied further to a building owner to select the most damaged walls. A background and a description of the proposed model are provided, and several key findings from the data analyses are presented.
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Zalejska Jonsson, Agnieszka, and Rosane Hungria Gunnelin. "Defects in newly constructed residential buildings: owners’ perspective." International Journal of Building Pathology and Adaptation 37, no. 2 (April 8, 2019): 163–85. http://dx.doi.org/10.1108/ijbpa-09-2018-0077.
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Purpose The purpose of this paper is to present defects reported by cooperative owners, and to determine the relationship between building characteristics, developer’s/contractor’s company size and defect type. Design/methodology/approach The analysis is based on defects reported by board members of cooperatives in Sweden through a survey questionnaire. The 1,563 questionnaires were posted by regular mail to the boards of cooperatives for buildings. The current research presents results from analysis of responses from 394 regular residential projects constructed between 2006 and 2013. The responses represent owners’ experience from a total 1,107 buildings. Findings Findings presented in this study indicate that building quality might be one of the factors contributing to the energy gap. The analysis indicates that the most severe problems reported by cooperatives are issues related to building envelope, particularly shortcomings in the function of windows, issues related to the function of the balcony and cracks in the facade and leakage caused by rain water. The results show that the building quality differs depending on developers’ size, measured by number of employees. The authors have also found a significant relationship between reported defects and location expressed by size of the city/municipality. Originality/value The discussion on newly constructed residential buildings has been dominated by the perspective of professionals (inspectors) and contractors (or developers) rather than of the owners/users themselves. This study presents findings from the owners’ perspective, thus contributing the owners’ viewpoint to the debate on building quality.
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Ismail, Zul-Atfi. "Lesson learned in maintaining the precast concrete buildings." Journal of Facilities Management 18, no. 3 (July 27, 2020): 341–59. http://dx.doi.org/10.1108/jfm-04-2020-0029.
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Purpose The purpose of this study is to identify existing weaknesses in precast concrete building maintenance and how to overcome it. The contemporary practice of conventional methods in the pre-cast concrete (PC) building maintenance entails many issues such as PC component aesthetic and structural defects, no integration between maintenance systems and lack the intelligent capabilities of linking defect diagnosis operations in maintenance due to poor service delivery and defect repetition. A key problem impeding the widespread adoption of emerging technologies is the lack of competent contractor supporting the effectiveness of implemented information and communication technology than conventional methods and the returns on investment. Design/methodology/approach The shortcomings of conventional methods are assessed from the perspective of PC buildings. Several data were collected through a case study of eight PC buildings from high-rise and complex buildings. Findings The conventional methods had significantly little emphasis on defect diagnosis tools. It had also increased the inadequate strategic decision making to analyse information in improving the maintenance project outcomes for PC building. Originality/value Building information modelling tools is suggested from findings and lessons learned as a good practice to reduce the repetition of defects on the design specification used and construction practiced.
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Konior, Jarosław, Marek Sawicki, and Mariusz Szóstak. "Intensity of the Formation of Defects in Residential Buildings with Regards to Changes in Their Reliability." Applied Sciences 10, no. 19 (September 23, 2020): 6651. http://dx.doi.org/10.3390/app10196651.
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Defining the basic determinants of the level of reliability with regards to the use of residential buildings and determining the function of the intensity of their characteristic defects are important issues concerning renovation strategy. The distribution of the exploitation time of residential buildings, the function of their reliability, and the distribution of the defect intensity of examined buildings are interdependent terms. Therefore, it can be assumed that the defect intensity of an object will be higher with an increase in its exploitation time. However, it is neither an increase reflecting the length of the building’s service life nor the value directly proportional to its age. The article presents a model and method of testing the defects and reliability of a representative group of traditional downtown residential buildings, which were erected in Wroclaw, Poland at the turn of the 19th and 20th centuries. A basic conclusion was drawn regarding the mechanism of damage of residential buildings: for the period of using the facility, in which the time of correct operation until failure has an exponential distribution, the average remaining time of failure-free operation is unchanged at any time. It was confirmed that the tested residential buildings, after a certain period of failure-free operation, fulfil their functions, just like new buildings. The optimal moment of renovation occurs after the end of the second period of operation, before the period of rapid wear. The study of the course of the damage intensity function over time reflects the wear process of a residential building in a representative sample of downtown residential buildings that were erected using traditional methods. Defining the average duration of the correct failure-free operation of an object by the reliability function, which determines the probability with which the correct operation time of an object will be longer than its age, has a practical application in the exploitation of a residential building and its components.
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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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Kim, Byeol, Yonghan Ahn, and Sanghyo Lee. "LDA-Based Model for Defect Management in Residential Buildings." Sustainability 11, no. 24 (December 16, 2019): 7201. http://dx.doi.org/10.3390/su11247201.
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This study systematically analyzes various defect patterns that occur during the warranty period of residential buildings using the loss distribution approach (LDA). This paper examines 16,108 defects from 133 residential buildings where defect disputes occurred between 2008 and 2018 in South Korea. The analysis results showed that the defect losses were relatively high in reinforcement concrete (RC) work (3/5/10 years), waterproof work (5 years), and finish work (2 years). It is shown that RC work has a high frequency of defects, such as cracks in concrete in public spaces affected by external factors. In addition, it was analyzed that the type of defect needed high repair cost because the area where the defect—such as incorrect installation and missing task—occurred, needed construction again. According to the level of frequency and severity, losses were divided within four zones to provide detailed strategies (by period). This will effectively contribute to minimizing unnecessary losses from defects as quantifying the losses of defects.
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Li, Huanyu, Guohui Feng, Yi Pu, and Han Wang. "Case analysis of thermal defect detection of near-zero energy building envelope based on infrared thermography." E3S Web of Conferences 356 (2022): 01006. http://dx.doi.org/10.1051/e3sconf/202235601006.
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The thermal performance of the envelope structure is one of the important components of the performance design of near-zero energy buildings. Minimizing envelope heat loss is the key to improving building energy efficiency. A necessary first step in the building envelope optimization process is the assessment of its actual thermal performance. This paper summarizes the application status of infrared thermography in thermal defect detection of building envelopes and common forms of thermal defects in near-zero energy buildings. Taking a near zero energy building in Shenyang area as the target object, an efficient and non-destructive infrared thermal image measurement method is applied to determine the thermal defect rating of the building from both qualitative and quantitative aspects. The results show that the building has high thermal performance. The temperature field distribution of the building envelope could be quickly obtained by using the infrared thermal imaging instrument. In this way, it can accurately identify the location of thermal bridges and air tightness defects, and provide an efficient and accurate detection method for building energy-saving diagnosis and evaluation.
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Olanrewaju, A., W. X. Tan, and Z. Gou. "Evaluation of defect in hospital buildings." IOP Conference Series: Materials Science and Engineering 1218, no. 1 (January 1, 2022): 012014. http://dx.doi.org/10.1088/1757-899x/1218/1/012014.
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Abstract There are many complaints and criticisms in media and research literature on defects in hospital buildings despite the consistent increase in maintenance expenditures. This research investigated the nature of defects in private hospital buildings. Primary data for the study were collected through a survey questionnaire administered to hospital building users. Based on the findings, the defects that often require frequent maintenance are leaky faucets, defective doors, defective windows, broken lights, and faulty ventilation. The major conclusion drawn from the survey was that although there are many different defects in the buildings, the urgency at which they require maintenance interventions varies. Therefore, in order to avoid value mismatch and resource misallocations, resources and attention should be directed to the defects that are more important to the users and the other should be included in the next maintenance rolling programme. Maintenance management should be implemented to achieve good maintenance, capable to meet the expected requirements of the end-user and increase building performance and reduce the maintenance backlog.
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Kroftova, Klara. "Most Frequent Problems of Building Structures of Urban Apartment Buildings from 2nd Half of 19th Century and the Start of 20th Century." Buildings 11, no. 1 (January 12, 2021): 27. http://dx.doi.org/10.3390/buildings11010027.
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An urban residential building from the second half of the 19th century and the start of the 20th century, the so-called tenement house, is a significant representative of the architecture of the developing urban fabric in Central Europe. The vertical and horizontal load-bearing structures of these houses currently tend to show characteristic, repeated defects and failures. Their knowledge may, in many cases, facilitate and speed up the design of the historic building’s restoration without compromising its heritage value in this process. The article presents the summary of the most frequently occurring defects and failures of these buildings. The summary, however, is not an absolute one, and, in the case of major damage to the building, it still applies that, first of all, a detailed analysis of the causes and consequences of defects and failures must be made as a basic prerequisite for the reliability and long-term durability of the building’s restoration and rehabilitation. An integral part of the rehabilitation of buildings must be the elimination of the causes of the appearance of their failures and remediation of all defects impairing their structural safety, health safety and energy efficiency.
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Pereira, Clara, Jorge de Brito, José D. Silvestre, and Inês Flores-Colen. "Atlas of Defects within a Global Building Inspection System." Applied Sciences 10, no. 17 (August 25, 2020): 5879. http://dx.doi.org/10.3390/app10175879.
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Building inspection systems are essential to optimise building maintenance. In the context of developing a global building inspection system, the lack of an expeditious tool to identify defects and their urgency of repair was detected. This study intends to propose an atlas of defects applicable to several types of building elements/materials, simplifying issues associated with the diagnosis of building pathology. A database was devised using previously developed components of the global inspection system: the classification list of defects and the urgency of repair parameters. Such a database was structured using several pages, each one with tables organised according to types of defects, building elements/materials and levels of urgency of repair (five-level scale—0–4). The atlas of defects has 38 pages in total, each for a different type of defect. The levels of urgency of repair are illustrated with photographs and described with concise classification criteria. Not all levels of urgency of repair apply to all defect–building element/material combinations; levels 1, 2 and 3 are those most often considered. The proposed atlas of defects is an innovative approach, useful to assist surveyors during technical inspections of buildings, whose concept may be adapted to other inspection systems.
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Karpov, D. "APPLICATION OF ACTIVE AND PASSIVE THERMAL CONTROL IN DEFECTOSCOPY OF CONSTRUCTION MATERIALS AND PRODUCTS, FILLER STRUCTURES OF BUILDINGS AND CONSTRUCTIONS." Construction Materials and Products 2, no. 4 (June 27, 2020): 39–44. http://dx.doi.org/10.34031/2618-7183-2019-2-4-39-44.
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one of the perspective and modern methods of nondestructive testing – thermal control is considered. The possibilities and advantages of thermal control in the identification of defects in various building materials and products, enclosing structures of buildings and structures are given. The short characteristics of the main defects of building materials and products, buildings and structures are proposed. The basic principles of identification of hidden (invisible) and obvious (visible) defects are briefly considered and practical results of construction flaw detection of objects for various purposes with the use of thermal imaging equipment are presented. On the example of a fragment of the enclosing building structure of piece building products in the form of ceramic bricks with artificially created technical defects in the process of qualitative analysis of thermograms zone of thermal temperature anomalies (method of active thermal control) are localized. For some enclosing structures of buildings and structures based on the results of thermal imaging identified obvious thermal defects, their qualitative analysis and recommendations for elimination (method of passive thermal control) are made.
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Minarovičová, Katarína, and Naďa Antošová. "Aesthetic and Technical Problems of Renovated Residential Buildings Facade - Prevention of Defects." Advanced Materials Research 855 (December 2013): 62–66. http://dx.doi.org/10.4028/www.scientific.net/amr.855.62.
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Renovation of the building stock is an acknowledged issue in the building industry. Constructional and technical requirements on residential buildings have significantly changed, as well as demands on flats equipment and aesthetic quality of the building and surrounding urban space. Several years "boom" of large-scale housing renovation in Slovakia has resulted in colour, shape and material diversity of residential buildings facade. The paper presents selected aspects of residential buildings renovation, related to their facade components. An important part of the renovation design should be prevention of defects, particularly of insulation systems. Several years after buildings insulation first colonies of microorganisms form on the surface of insulated facades and results in the formation of “green skin” on building façades. It has been observed that up to 80 % of insulated buildings are affected by this greening. This microbial colonization of buildings causes aesthetic problems and can lead to degradation and spalling of the coating [1].
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Janickas, A. "EVALUATION OF DEFECTS IN BUILDINGS." Statyba 4, no. 1 (January 1998): 12–19. http://dx.doi.org/10.1080/13921525.1998.10531374.
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Turner, Suzann D., and Barry A. Richardson. "Defects and Deterioration in Buildings." APT Bulletin 35, no. 4 (2004): 59. http://dx.doi.org/10.2307/4126426.
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Parker, Roger. "Defects in buildings: who pays?" Facilities 8, no. 10 (October 1990): 20–21. http://dx.doi.org/10.1108/eum0000000002131.
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Chen, J., W. Lu, F. A. Ghansah, and Z. Peng. "Defect digital twinning: A technical framework to integrate robotics, AI and BIM for facility management and renovation." IOP Conference Series: Earth and Environmental Science 1101, no. 2 (November 1, 2022): 022041. http://dx.doi.org/10.1088/1755-1315/1101/2/022041.
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Abstract Buildings and infrastructure are aging around the world, calling for proper management and renovation. Awareness of defects occurred to the facilities is a prerequisite to make informed decisions. Despite extensive research in defect detection, it remains unclear how to timely update the dynamically changing defect condition at scale and with ease. This study aims to develop a technical framework that integrates robotics, artificial intelligence (AI), and building information modeling (BIM) to enable defect digital twinning. The framework establishes a mechanism to bridge defects in the physical world with their digital representations in the virtual world. It extends existing defect information modeling with a means to capture accurate and up-to-date as-damaged information in a timely manner. The proposed framework was evaluated with a 10-story residential building in Hong Kong. The case study demonstrates the effectiveness of the framework in twinning defects concerning their positions, geometry and dimensions. The research opens new possibilities to twin facility defects at street block or even city level to support urban renewal.
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Karpov, Denis, Daniya Zaripova, and Mikhail Pavlov. "Feasibility of active and passive thermal control application for defect identification of building materials and products, enclosures of construction objects." E3S Web of Conferences 288 (2021): 01101. http://dx.doi.org/10.1051/e3sconf/202128801101.
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This paper considers one of the most promising and modern methods of non-destructive testing - thermal control. The possibilities and advantages of thermal control for identifying defects of various building materials and products, enclosures of buildings and structures are presented. Brief characteristics of the main defects of building materials, products, and structures are presented. The basic principles of identifying hidden (invisible) and explicit (visible) defects are briefly considered and the practical results of construction defect identification of objects for various purposes using thermal imaging equipment are presented. The zones of thermal temperature anomalies are localized during qualitative analysis of thermograms (the method of active thermal control). The considered example is a fragment of a building enclosure made ceramic bricks with artificially created technical defects. For some enclosures of building structures and constructions, explicit thermal defects were identified from thermal imaging, their qualitative analysis was carried out, and recommendations for their elimination were proposed (method of passive thermal control).
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Lee, Sanghoon, Sanghyo Lee, and Jaejun Kim. "Evaluating the Impact of Defect Risks in Residential Buildings at the Occupancy Phase." Sustainability 10, no. 12 (November 28, 2018): 4466. http://dx.doi.org/10.3390/su10124466.
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This study investigated defect risks in residential buildings using the Loss Distribution Approach (LDA), a method of identifying and quantifying operational risks in economic terms. Analysis was performed on 7554 defects in 48 residential buildings where defect disputes occurred between 2008 and 2017. Defects were classified into eight types: affected functionality, broken items, corrosion, detachment, incorrect installation, missing task, surface appearance, and water problems. Work types were classified into seven groups: reinforced concrete (RC), masonry, finish, mechanical, electrical, and plumbing (MEP), door and windows, furniture, and miscellaneous. Using a risk matrix from these categories, the frequency distribution and severity distribution for each matrix cell was used to calculate loss distributions; these were combined to find the total loss distribution. The defect risks centered on RC and MEP. For RC, broken items and water leaks due to cracks or damage represented the most severe defects. For MEP, severe defects occurred owing to malfunctions in products and installation problems. Loss distributions can be used to create scenarios and corresponding response plans; thus, when a defect dispute occurs, the cost can be assessed. Furthermore, residential buildings’ loss distributions for each cell can be used to evaluate the types of work where defects occur and to verify relevant subcontractor’s abilities.
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Lee, Kisu, Goopyo Hong, Lee Sael, Sanghyo Lee, and Ha Young Kim. "MultiDefectNet: Multi-Class Defect Detection of Building Façade Based on Deep Convolutional Neural Network." Sustainability 12, no. 22 (November 23, 2020): 9785. http://dx.doi.org/10.3390/su12229785.
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Defects in residential building façades affect the structural integrity of buildings and degrade external appearances. Defects in a building façade are typically managed using manpower during maintenance. This approach is time-consuming, yields subjective results, and can lead to accidents or casualties. To address this, we propose a building façade monitoring system that utilizes an object detection method based on deep learning to efficiently manage defects by minimizing the involvement of manpower. The dataset used for training a deep-learning-based network contains actual residential building façade images. Various building designs in these raw images make it difficult to detect defects because of their various types and complex backgrounds. We employed the faster regions with convolutional neural network (Faster R-CNN) structure for more accurate defect detection in such environments, achieving an average precision (intersection over union (IoU) = 0.5) of 62.7% for all types of trained defects. As it is difficult to detect defects in a training environment, it is necessary to improve the performance of the network. However, the object detection network employed in this study yields an excellent performance in complex real-world images, indicating the possibility of developing a system that would detect defects in more types of building façades.
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ZUBANOV, S. V. "RESULTS OF ENGINIRING INSPECTION OF TECHNICAL CONDITION OF BUILDINGS` BRICK WALLS OF PETROCHEMENICAL INDUSTRY ENTERPRISE TO ITS SAFETY OPERATION." Urban construction and architecture 3, no. 3 (September 15, 2013): 73–80. http://dx.doi.org/10.17673/vestnik.2013.03.15.
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There are represented results of engineering inspection and diagnostics of technical condition of buildings` brick walls of Samara Region`s petrochemical industry enterprise in the article. There are given major constructive characteristics of buildings with brick walls. There are given main types of defects and damages of building brick structures. There are detected reasons of defects stone constructions of buldings.
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Субботин, Анатолий, Anatoliy Subbotin, Виталий Субботин, Vitaliy Subbotin, Игнат Субботин, and Ignat Subbotin. "Definition of causes of destruction of materials of a bricklaying on sites of facades of buildings under construction of the residential quarter in the residential district "October" of Novocherkassk of the Rostov region." Construction and Architecture 2, no. 2 (April 6, 2014): 100–103. http://dx.doi.org/10.12737/5679.
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IThis article discusses the problem related to the appearance of defects in masonry cladding layer self-supporting walls of buildings with monolithic concrete frame for example inspection of buildings under construction of residential quarters in the October district of Novocherkassk. As a result of the survey by OOO "STC" identified and described the characteristic defects in the veneering layer self-supporting walls of buildings and identify their causes. Based on the experience of experts, instrumental studies of structural materials, conducted by a certified testing laboratory in materials survey gives an overview of the causes of defects are manifestations of research of other spe-cialists and organizations leading of which is CNIISK. VA Kucherenko. According to the results of the system analysis of detected defects and data instrumental studies, the authors proposed solutions to eliminate the defects and bring the building up to standard.
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Volkovas, Vitalijus. "The Concept of Buildings Stability Monitoring and Damage Diagnostics." Key Engineering Materials 569-570 (July 2013): 238–45. http://dx.doi.org/10.4028/www.scientific.net/kem.569-570.238.
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The concept of the buildings stability, based on experimental methodology consists of objective monitoring of the parameters defined by modelling and control using hardware tools, i.e. systems monitoring and diagnostics, which allows generating appropriate response to emerging defects, their fixing and prognosis of their location. In the framework of the problem of buildings stability the complex research was done in which mathematical models of buildings construction were created, defects identification method developed and also monitoring concept was composed according which automated monitoring system and software prototypes and structures were implemented. The strategic aim of the development of buildings monitoring system was realized by mathematical and physical modelling of the damages (e.g. defects like crack or destroy of linkage); analysis of characteristics sensitive to defects; selection of stability parameters and measurements; creation of automated system prototype; investigation of the methods applied for the monitoring system and diagnostics; development of software and separate elements of the system and approbation of the whole complex. Thorough evaluation of the technical state of the buildings numerical is executed using physical models and natural objects which support reliable state identification of the building and also helps to track changes.
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Idowu, Taiwo. "An analysis of the Causes of Building Defects in Residential Properties in Diobu area of port Harcourt, River State, Nigeria." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (November 30, 2021): 536–43. http://dx.doi.org/10.22214/ijraset.2021.38822.
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Abstract: Currently, derelict buildings with little or no amenities have remained a challenge to the physical fabric of properties in Diobu in Port Harcourt. These derelictions are observed to be affecting the economic and physical functionality of these buildings. Therefore, the paper aims to investigate the causes of the dereliction in the buildings in Diobu area in Port Harcourt Rivers State of Nigeria. A survey research design was adopted where 153 questionnaires was administered to the resident of the study area and another 56 questionnaires to property managers in Port Harcourt. Out of the 209 (Nr) questionnaires administered, a total of 197 was retrieved representing a response rate of 94%. Data gathered were analyzed using Relative Important Index, mean and percentages and presented in tabular and pictorial formats. The paper’s finding revealed and confirmed that wall cracks, wall/floor dampness, roof leakages, faulty plumbing fittings, poor ventilation and peeling/faded wall paints are some of the defects in the properties in Diobu. A further investigation revealed that poor building designs, old age, poor maintenance culture, adverse climatic condition, misuse, overcrowding and insect attack are among the causes of these defects on the buildings. This research work is original and has not been previously published anywhere; its reflection is that effective maintenance culture, good occupancy ratio, use of skilled personnel and quality building materials should be encouraged by residents, property managers and landlords in order to check the menace of building defects in the study area. Keywords: Residential Buildings, Defects, causes, Analysis, Diobu.
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Chang, Li-hong, Xiao-hong Chang, Hao Chang, Wei Qian, Li-ting Cheng, and Xiao-li Han. "Nondestructive Testing on Ancient Wooden Components Based on Shapley Value." Advances in Materials Science and Engineering 2019 (February 6, 2019): 1–11. http://dx.doi.org/10.1155/2019/8039734.
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In this study, we propose nondestructive testing methods and combined forecasting models-based stress wave and impedance measurements to obtain accurate internal defects information for wooden building components. Internal defects data for major wooden components of an ancient building in China and reverse laboratory test data on matching tree species indicated various degrees of damage on the pavilion wood structure surface and internal defects in certain pillars. The stress wave method enabled rapid acquisition of two-dimensional plots of test sections; however, the results revealed that the area of stress wave detection was greater than the actual defect area. Moreover, the impedance meter was able to determine the defect position and type in a single path, and the actual defect area was proportional to the absolute error of the drilling resistance. By distributing the errors from the two nondestructive testing methods on the basis of a Shapley value algorithm, we determined the weights of stress wave and impedance meter data in the forecasting models and established combined forecasting models that showed greater accuracy with a mean relative error of less than 6%. This method can improve the prediction accuracy of internal defects in ancient buildings and provide effective data support for practical engineering repair and reinforcement schemes.
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Baş, C., A. N. Türkeri, and M. A. Lacasse. "Building Facade Failures due to Rainwater Entry in Turkey." IOP Conference Series: Earth and Environmental Science 1101, no. 2 (November 1, 2022): 022011. http://dx.doi.org/10.1088/1755-1315/1101/2/022011.
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Abstract Facade failures due to rainwater entry are common in Turkey although, few systematic studies have been completed to determine the types of defects and failures and their causes as would permit developing appropriate repair solutions. The intent of this study is to determine the types of defects and failures caused by rainwater ingress to building facades based on case studies of failure in Turkey. Thus, defects and failures can be characterized and classified, such that the most common types of failure can be revealed and adequate repair solutions proposed. A review of literature was conducted of studies undertaken in Turkey on rainwater entry and building defects. Additionally, field inspections were carried out for 16 public buildings in Istanbul and information regarding failures was gathered from local authorities. Based on data evaluated from previous research and field inspections, it was determined that majority of the buildings had cladding walls with stucco being the most common cladding material. Failures occurred in cladding facades with stucco included detachment of cladding, staining, and cracks; the most common failure was blistering and exfoliation. Air and rainwater leakage due to defects in sealants was the most common failure in buildings with panel and stick wall systems.
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Vytlačil, Dalibor. "System description of the defect creation and elimination in the buildings." MATEC Web of Conferences 146 (2018): 01011. http://dx.doi.org/10.1051/matecconf/201814601011.
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The paper deals with the dynamics of the system of defects creation in the buildings and also with the possibilities of the defects elimination. The problem is described by the dynamic model that includes key elements influencing the system behaviour. The model is based on the system dynamics method that uses the stock elements and the flow elements which change the stock element values. In the described problem the main stock is the number of the equipment defects. This parameter can be increased by the flow element that depends on the time of using and the load. For the defect elimination are two possibilities: the planned maintenance and the repair of broken parts. Other elements are number of workers available for the elimination of defects and the running cost depending on the maintenance effort. The case of the main system parameters calculation is presented. The model can be used for understanding the importance of the maintenance in the field of facility management.
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Klimina, Victoriya, Alexey Yurgaitis, and Dmitriy Topchiy. "Unified classification of defects detected by the technical examination." E3S Web of Conferences 110 (2019): 01086. http://dx.doi.org/10.1051/e3sconf/201911001086.
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The article is devoted to the problem of the absence of the unified defects classification within the multipurpose technical test of buildings and constructions on the territory of the Russian Federation. It draws attention to the significance of detected faults finding and their risks in the case of the further building usage. The extract from the authorial Defects Classification created for inspection of bearing structures of large-panel, monolithic and brick buildings is given in the article to demonstrate the ways of examining the above mentioned constructions.
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Tabet Aoul, Kheira Anissa, Rahma Hagi, Rahma Abdelghani, Monaya Syam, and Boshra Akhozheya. "Building Envelope Thermal Defects in Existing and Under-Construction Housing in the UAE; Infrared Thermography Diagnosis and Qualitative Impacts Analysis." Sustainability 13, no. 4 (February 19, 2021): 2230. http://dx.doi.org/10.3390/su13042230.
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The built environment accounts for the highest share of energy use and carbon emissions, particularly in emerging economies, caused by population growth and fast urbanization. This phenomenon is further exacerbated under extreme climatic conditions such as those of the United Arab Emirates, the context of this study, where the highest energy share is consumed in buildings, mostly used in the residential sector for cooling purposes. Despite efforts to curb energy consumption through building energy efficiency measures in new construction, substantial existing building stock and construction quality are left out. Construction defects, particularly in the building envelope, are recognized to affect its thermal integrity. This paper aims, first, to detect through thermography field investigation audit construction defects bearing thermal impacts in existing and under-construction residential buildings. Then, through a qualitative analysis, we identify the resulting energy, cost, and health impacts of the identified defects. Results indicate that lack or discontinuity of insulation, thermal bridging through building elements, blockwork defects, and design change discrepancies are the recurrent building and construction defects. The qualitative review analysis indicates substantial energy loss due to lack of insulation, thermal bridging with cost and health implications, while beneficial mitigation measures include consideration of building envelope retrofitting, skilled workmanship, and the call for quality management procedures during construction.
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Shin, Hyunkyu, Yonghan Ahn, Sungho Tae, Heungbae Gil, Mihwa Song, and Sanghyo Lee. "Enhancement of Multi-Class Structural Defect Recognition Using Generative Adversarial Network." Sustainability 13, no. 22 (November 16, 2021): 12682. http://dx.doi.org/10.3390/su132212682.
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Recently, in the building and infrastructure fields, studies on defect detection methods using deep learning have been widely implemented. For robust automatic recognition of defects in buildings, a sufficiently large training dataset is required for the target defects. However, it is challenging to collect sufficient data from degrading building structures. To address the data shortage and imbalance problem, in this study, a data augmentation method was developed using a generative adversarial network (GAN). To confirm the effect of data augmentation in the defect dataset of old structures, two scenarios were compared and experiments were conducted. As a result, in the models that applied the GAN-based data augmentation experimentally, the average performance increased by approximately 0.16 compared to the model trained using a small dataset. Based on the results of the experiments, the GAN-based data augmentation strategy is expected to be a reliable alternative to complement defect datasets with an unbalanced number of objects.
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Barabash, Мaria S., and Maryna A. Romashkina. "LIRA-SAPR PROGRAM FOR GENERATING DESIGN MODELS OF RECONSTRUCTED BUILDINGS." International Journal for Computational Civil and Structural Engineering 14, no. 4 (December 21, 2018): 70–80. http://dx.doi.org/10.22337/2587-9618-2018-14-4-70-80.
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The paper deals with technique of simulation for buildings at maintenance stage with account of changes in structural model during reconstruction. The authours suggest algorithm for linear and nonlinear analysis of structures in LIRA-SAPR program with account of erection process. Generation of design models for reconstructed buildings are illustrated with real examples from design practice (reconstruction of 3-storey office building with overstorey; reconstruction of 5-storey hostel with built-in nonresidential premises when floor slabs are changed; reconstruction of building with account of defects that were detected and strengthening that was made; reconstruction of 9-storey residential building where gaz was exploded, with account of defects that were detected and strengthening that was made).
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Ouyang, Chen Bing, and Ying Chen. "The Critical Construction Techniques of Preventing Quality Defects of External Wall Insulation." Applied Mechanics and Materials 105-107 (September 2011): 1011–15. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1011.
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Since China's enforcement of building energy saving standards, external insulation technology has been applied in a mount of buildings. However, four common defects of it, namely crack, shedding and hollow, leakage, frost and condensation, had gradually appeared. This study tries to find out the critical construction techniques of preventing these defects which are closely related to quality in order that engineers pay more attention to them during construction. Literature research and field investigation to engineers and technicians are adopted. Designed questionnaires, including 61 kinds of detailed defects causes and relevant preventive measures, are used in the survey. Through statistical analysis of survey data, the mesh, plastering mortar configuration, etc. 10 detailed causes are suggested as main defect reasons according to harm grade. Meanwhile, corresponding 15 highly effective construction technical countermeasures are put forward finally.
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Konior, J. "Technical Assessment of Old Buildings by Fuzzy Approach." Archives of Civil Engineering 65, no. 1 (March 1, 2019): 130–41. http://dx.doi.org/10.2478/ace-2019-0009.
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AbstractA group of old apartment houses with the age over 100 years (that is those carried out before the First World War) takes an important place in polish building resources. Technical maintenance of apartment houses, traditional methods erected, is nowadays and will be a valid problem in the nearest future. The results of the work refer to the general population, estimated for 600 objects, that is about 20% of municipal downtown apartment houses in Wrocław.The purpose of the research was to identify an influence of widely considered maintenance of apartment houses on a degree and intensity of their elements’ deterioration. The goal of the work has been fulfilled by symptoms’ analysis of declining of inspected elements’ exploitation values, that is identification of mechanics of their defects arising.The range of the work has required creation of original qualitative model of pinpointed defects and its transfer into quantitative one. It has made possible to analyse the reason - effect phenomena „defect - technical wear” relevant to the most important elements of Wroclaw downtown district’s apartment houses. The research procedure has been conducted in accordance of fuzzy sets theory which made possible to describe qualitative model of pinpointed defects and its transfer into a quantitative one.
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Yamov, Vladimir, and Zoya Belyaeva. "Analysis of main causes of defects of multi-storey reinforced concrete frame buildings." MATEC Web of Conferences 279 (2019): 02008. http://dx.doi.org/10.1051/matecconf/201927902008.
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Multi-storey reinforced concrete frame buildings are widespread in Russia. Most of these buildings have braced frame system, where the main load-bearing elements are columns, beams and hollow floor slabs, and the spatial rigidity is provided by additional diaphragms, staircase and elevator section. Such buildings are easy to design and build and are quite multifunctional in purpose. The article on the basis of the authors’ experience in the survey examines the main defects in such buildings. The causes of typical defects can be divided into objective, technological and operational reasons. Usually, the cause of survey can be structural damage discovered by the building owner that is why often the survey is conducted during the emergency condition, which can be avoided, if inspections and monitoring of the structures technical state are regular. Also there is a necessity of improving the design methods of new buildings and strengthening of existing ones.
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Konior, Jarosław, and Mariusz Rejment. "Correlation between Defects and Technical Wear of Materials Used in Traditional Construction." Materials 14, no. 10 (May 11, 2021): 2482. http://dx.doi.org/10.3390/ma14102482.
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The degree of technical wear of old buildings, which are made of basic materials (cement, concrete, steel, timber, plaster, brick) using traditional technology, is expressed by the size and intensity of damage to their elements. The topic of the research concerns old residential buildings from the turn of the 19th and 20th centuries, which are located in the downtown district of Wroclaw, Poland. The descriptive analysis and the analysis of the definitions of defects that occur in the elements of residential buildings, which were performed as random analyzes, do not allow defects to be considered as measurable variables at a level of visual investigation. The major drawback of the method that is used by experts when assessing the technical condition of civil engineering buildings is that it does not numerically express the magnitude (strength) of the defects. Therefore, an attempt was made to numerically express the relationship (if such a relationship exists) between the occurred defects of buildings and the extent of their technical wear process. When calculating the strength of this relationship, the method of determining the point biserial correlation coefficient for the measurable property and the dichotomous property was used. It was found that the direction of the relation is right-hand for all the tested building elements, but the strength of the correlation between the detected defects and technical wear shows a considerable span and depends on the conditions of the apartment house’s maintenance. As a rule, damage caused by water penetration and moisture penetration always shows correlations of at least moderate strength.
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Kung, Ren-Yi, Nai-Hsin Pan, Charles C. N. Wang, and Pin-Chan Lee. "Application of Deep Learning and Unmanned Aerial Vehicle on Building Maintenance." Advances in Civil Engineering 2021 (April 19, 2021): 1–12. http://dx.doi.org/10.1155/2021/5598690.
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Several natural and human factors are responsible for the defacement of the external walls and tiles of buildings, and the related deterioration can be a public safety hazard. Therefore, active building maintenance and repair processes are essential for ensuring building sustainability. However, conventional inspection methods are time-, cost-, and labor-intensive processes. Therefore, herein, this study proposes a convolutional neural network (CNN) model for image-based automated detection and localization of key building defects (efflorescence, spalling, cracking, and defacement). Based on a pretrained CNN VGG-16 classifier, this model applies class activation mapping for object localization. After identifying its limitations in real-life applications, this study determined the model’s robustness and ability to accurately detect and localize defects in the external wall tiles of buildings. For real-time detection and localization, this study applied this model by using mobile devices and drones. The results show that the application of deep learning with UAV can effectively detect various kinds of external wall defects and improve the detection efficiency.
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Mohammed, Bukar, Zanna Ali, Ibrahim Ahmed, and Mohammed Adamu. "BUILDING CONDITION SURVEY AND SYSTEMATIC DEFECTS DIAGNOSIS ON LIBRARY BUILDING IN NIGERIA." International Journal of Innovative Research in Education, Technology & Social Strategies 8, no. 1 (March 25, 2021): 76–84. http://dx.doi.org/10.48028/iiprds/ijiretss.v8.i1.08.
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The building under investigation is at Mai Idris Alooma Polytechnic Geidam library situated in Yobe State North Eastern, Nigeria. The building is being occupied by large number of people many defects propelled were associated with cracks, discoloration, settlement, dampness, peeling, moisture and mold grow on the buildings besides environmental factors. These compelled the researcher to conduct the investigation to look into possible remedies in line with the bulk stage defects diagnostic that will be useful in identifying the aspect. The information gathered through survey of the affected building under investigation based on spatial severity degree of damages suffered on the buildings. Moreover; the analysis for the investigation is based on Assessment Rating system (BARIS) that provide very high-resolution to process the interferometric techniques. However, after a critical survey of the building facades from each side the researcher explores the major defects found on the building that is mostly attributed due to poor workmanship, general climatic conditions, and practical inadequacy during construction. Therefore, the diagnosis will predict the overall judgment for the type of repair required.
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Meng, Xian Hong, and Guo Zhi Yang. "Vulnerability Analysis of Existing Buildings under Seismos." Applied Mechanics and Materials 580-583 (July 2014): 1782–85. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.1782.
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By studying the structure of vulnerability analysis and abroad , on their respective merits and defects were compared and analyzed to select the best of vulnerability research methods. Combined with the existing building characteristics, the nonlinear static method on both the vulnerability analysis of old buildings also applicable conclusions. Effective solution to the existing buildings under earthquake disaster risk assessment.
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Sobotka, Jindřich, and Radim Smolka. "Use of EMW radiation in the building industry at defects in buildings." MATEC Web of Conferences 93 (December 22, 2016): 01008. http://dx.doi.org/10.1051/matecconf/201779301008.
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Sobotka, Jindřich, and Radim Smolka. "Use of EMW radiation in the building industry at defects in buildings." MATEC Web of Conferences 93 (December 22, 2016): 01008. http://dx.doi.org/10.1051/matecconf/20179301008.
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Evtushenko, Sergej, and Timofey Krakhmalnyy. "DEFECTS AND DAMAGES OF STRUCTURES COVERING INDUSTRIAL BUILDINGS." Construction and Architecture 9, no. 4 (December 18, 2021): 6–10. http://dx.doi.org/10.29039/2308-0191-2021-9-4-6-10.
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This article is a continuation of the series of articles by the authors on defects and damages of industrial buildings, it describes typical defects in coating structures - trusses and coating plates, the causes of defects, the consequences of which can lead to the development of the revealed damage, recommendations for assessing the technical condition and recommendations for eliminating the identified damage. The article also provides a generalized analysis of the causes of defects and the most likely areas of damage formation.
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Plebankiewicz, Edyta, and Jarosław Malara. "Analysis of Defects in Residential Buildings Reported during the Warranty Period." Applied Sciences 10, no. 17 (September 3, 2020): 6123. http://dx.doi.org/10.3390/app10176123.
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The aim of the article is to present the results of preliminary research of the defects in residential buildings occurring during the warranty period. Due to the small amount of data, the research results cannot be generalized but allow for the formulation of research hypotheses that will be verified in future studies. The data collected included reports of defects in three multifamily residential buildings constructed by the developer in one of the big cities in Poland, which were then examined. For the examination of defects, statistical analysis was used, which revealed that more than half of the reports contained reasonable defects. The results of the preliminary research also indicate that, on the one hand, owners are very active in making warranty claims in the first three months from the date of commissioning, and, on the other hand, with time, the percentage of reasonable defects increases. In terms of the significance of defects, the largest percentage was significant defects. The results showed little activity on the part of property managers in the initial phase of the operation of the buildings, which is the opposite of that of apartment owners. Reports of faults in windows and door joinery, moisture, scratches on walls, and in the area of balconies and terraces are characterized by a relatively low number of cases reported in the first half of the year after the building is commissioned and a gradual increase in the subsequent warranty period. On the other hand, reports related to electrical installation defects are most frequent in the initial period of the warranty, but, with time, their number decreases.
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Jesumoroti, Christtestimony Oluwafemi, and Khor Soo Cheen. "Critical Insight into Defects in Malaysia Hospital Buildings Maintenance Management." IOP Conference Series: Earth and Environmental Science 945, no. 1 (December 1, 2021): 012055. http://dx.doi.org/10.1088/1755-1315/945/1/012055.
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Abstract Healthcare buildings require efficient maintenance management to afford patients, visitors, and other users of hospital buildings such as healthcare professionals a serene and safe environment that accelerates wellbeing and provides maximum comfort. To achieve this goal, hospital buildings must adopt effective maintenance management approaches and services. Apart from ensuring the safety of the environment, users of the buildings must be satisfied with the quality of available services, particularly, those offered to patients. Against this backdrop, this study assesses the effects of defects on hospital buildings and analyzes the practicality of maintenance best practices such as sufficient allocations of funds and appropriate management of resources (including time and labor) towards the improvement of the prevalent status quo. This is important because the maintenance practices employed in hospitals intrinsically impact the performance of the hospital buildings as a result of defects. Survey questionnaires were administered to users of hospital buildings in Malaysia. The most significant defects reported concerned Algae on concrete floors, weather and climate conditions, and sanitary appliance & fittings damages. These defects depreciate the appearance, functionality and utility of hospital buildings thereby lessening their performance and efficiency. Therefore, this study asserts the pertinence of reevaluating the maintenance management approaches employed towards the rectification of the highlighted defects in hospital buildings across Malaysia. The study posits the adoption of systemic proactive maintenance procedures to preempt decay, causalities and reduce cost implications.
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Korniyenko, Sergey. "Complex analysis of energy efficiency in operated high-rise residential building: Case study." E3S Web of Conferences 33 (2018): 02005. http://dx.doi.org/10.1051/e3sconf/20183302005.
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Energy conservation and human thermal comfort enhancement in buildings is a topical issue of modern architecture and construction. The innovative solution of this problem makes it possible to enhance building ecological and maintenance safety, to reduce hydrocarbon fuel consumption, and to improve life standard of people. The requirements to increase of energy efficiency in buildings should be provided at all the stages of building's life cycle that is at the stage of design, construction and maintenance of buildings. The research purpose is complex analysis of energy efficiency in operated high-rise residential building. Many actions for building energy efficiency are realized according to the project; mainly it is the effective building envelope and engineering systems. Based on results of measurements the energy indicators of the building during annual period have been calculated. The main reason of increase in heat losses consists in the raised infiltration of external air in the building through a building envelope owing to the increased air permeability of windows and balcony doors (construction defects). Thermorenovation of the building based on ventilating and infiltration heat losses reduction through a building envelope allows reducing annual energy consumption. Energy efficiency assessment based on the total annual energy consumption of building, including energy indices for heating and a ventilation, hot water supply and electricity supply, in comparison with heating is more complete. The account of various components in building energy balance completely corresponds to modern direction of researches on energy conservation and thermal comfort enhancement in buildings.