scholarly journals Improving the analysis of technical risk factors using the integrated FLDS model on the example of the construction of multi-storey residential buildings

Vestnik MGSU ◽  
2021 ◽  
pp. 1608-1619
Author(s):  
Azariy A. Lapidus ◽  
Otari D. Chapidze
Keyword(s):  
Risk Factors ◽  
Mathematical Model ◽  
Life Cycle ◽  
Construction Industry ◽  
Residential Buildings ◽  
Residential Building ◽  
Point Of View ◽  
Technical Risk ◽  
Technical Risks ◽  
Main Factors

Introduction. This study is aimed at developing a model of the life cycle of a multi-storey residential building, taking into account the factors of technical risks. This model makes it possible to identify the main factors of technical risks at different stages of a project’s life and predict its behavior. After examining an extensive list of both domestic and foreign literature, it is clear that the systematization and classification of the elements of the life cycle of a construction object in conditions of technical risk factors is an urgent task in the construction industry. The purpose of the study is to develop the most effective mathematical model for determining and predicting the influence of technical risk factors on the life cycle of a multi-storey residential building. Materials and methods. The study is based not only on an extensive review of scientific literature, whose attention is focused on technical risks, but also analyzed the stages of the life cycle of buildings and structures, used the method of analogies and the method of diagrams, based on the theory of fuzzy set and the Dempster-Schafer theory, a mathematical model of FLDS is formed, so an expert survey was conducted with leading experts in the construction industry, on the basis of which the selection of the main factors of technical risks is formed. Results. The problem of analyzing technical risks in the construction industry plays a significant role, this is due to the construction of a significant number of modern structures that are unique in their kind, both from an architectural point of view, and from the point of view of the originality of design and technological solutions. Conclusions. Due to the uncertainty of experts’ opinions regarding the likelihood of occurrence and the degree of impact of risk factors, a demonstrative mathematical model of FLDS based on two theories is proposed, which allows numerically determining and distributing the influence of a risk factor by ranks. The result of the study shows that the application of the FLDS mathematical model will significantly increase the success of the project, allowing you to see the critical factors of technical risks at the initial stage of the life cycle of a construction project.

scholarly journals Application of the method of complex assessment of the quality of high rise apartment buildings in practice

2021 ◽  
Vol 258 ◽  
pp. 09031
Author(s):  
Yana Shesterikova
Keyword(s):  
Mathematical Model ◽  
Desirability Function ◽  
Residential Buildings ◽  
Residential Building ◽  
Building Construction ◽  
High Rise ◽  
Apartment Buildings ◽  
Expert Opinions ◽  
Main Factors

A comprehensive approach to the problem of improving the quality of construction of residential buildings, allows you to take into account various main factors that affect the quality of construction in General. Using the method of expert opinions, the most significant parameters were identified. The weight of each factor is determined using a mathematical model. The experiment examined three levels of variation in significance for each group of factors. After obtaining a discrete value of a complex indicator of the quality of construction of a residential building, it is interpreted using adapted quantitative ranges of values of the generalized Harrington desirability function. A method has been developed to determine the effectiveness of organizational and technological decisions made. An algorithm has also been developed to improve the quality of residential building construction.

scholarly journals Comparison of wooden and conventional houses sustainability: Increasing application of modified wood in R. of Macedonia

2019 ◽  
Vol 23 (3 Part B) ◽  
pp. 1943-1955
Author(s):  
Aleksandar Petrovski ◽  
Jelena Ivanovic-Sekularac ◽  
Nenad Sekularac
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Construction Industry ◽  
Residential Buildings ◽  
Construction Materials ◽  
Residential Building ◽  
Energy Performance ◽  
Wood Products ◽  
Conventional Concrete ◽  
The Republic

The residential sector in Republic of North Macedonia, situated in south-east Europe, is responsible for the consumption of significant amounts of resources and for the production of large amount of emissions and waste. The increased application of wood products can substantially improve these conditions and contribute towards increasing the sustainability in the construction industry and the creation of sustainable homes. The contribution of this paper is the simulation of four different alternatives of residential buildings in the Republic of North Macedonia, evaluated in terms of energy performance and life-cycle assessment for the "cradle to gate" phase. The results of this study revealed that by replacing conventional concrete and masonry constructions with wooden constructions in low-rise family houses, the carbon emissions can be reduced up to 145%. The contribution of this paper is the simulation and analysis of the energy performance by using building performance simulation tools and life-cycle assessment of a residential building and its optimization through several models. The results give significant insight on the influence that the different construction materials have on the environment and buildings performance. Also, the research enables stimulation of the construction industry in utilizing wooden structures and delivering legislation that could increase their use. These actions would provide means for the development of sustainable buildings, neighborhoods and sustainable development of the Republic of North Macedonia.

Analysing project risks in Ghana’s real estate industry

2018 ◽  
Vol 16 (4) ◽  
pp. 413-428
Author(s):  
Charles Amoatey ◽  
Doreen Danquah
Keyword(s):  
Risk Factors ◽  
Real Estate ◽  
Construction Industry ◽  
Project Managers ◽  
Environmental Risks ◽  
Real Estate Industry ◽  
Content Type ◽  
Market Risks ◽  
Project Risks ◽  
Technical Risks

Purpose The purpose of this paper is to analyse project risks in Ghana’s real estate construction industry in terms of likelihood of occurrence, severity of impact and controllability. Design/methodology/approach A quantitative research approach was used in this study to address the research objective. The study population consisted project managers, architects, surveyors and contractors from 17 members of the Ghana Real Estate Developers Association (GREDA) in Ghana. Random stratified sampling technique was used to select 97 participants from these firms. A structured questionnaire was used to collect primary data, whereas descriptive statistics were used to present findings. Findings All risks identified have some level of likelihood of occurrence, extent of severity of impact and controllability. Market risks, technical risks and environmental risks are more likely to occur. Market risks, technical risks and environmental risks had the highest severity of impact. Financial risks, market risks, managerial risks and technical risks are the most controllable. Among all risks, environmental risks are the direst because they have high likelihood of occurrence and severity of impact but very low controllability. Real estate construction firms (developers) are therefore expected to prioritize remedy of environmental risks. Research limitations/implications The study is based on self-reported perception of project parties on the likelihood, severity of impact and controllability of real estate project risk factors. Firms outside of GREDA were not included in the survey. Therefore, generalisation of these risk factors for the entire construction industry should be done with caution. Practical implications The research results show that Ghanaian real estate developers are aware of the existence of the risks which impact on the performance of the industry. To effectively and efficiently manage these risk factors, project parties must understand the likelihood of occurrence, severity of impact and controllability of the risk factors, as well as individual firm’s responsibilities and capabilities to manage them. Such knowledge helps project managers to prioritise risks in managing them in the face of scarce resources. From an academic research perspective, the paper contributes to a conceptual risk assessment framework for the real estate industry. Originality/value The paper’s main contributions relate to the introduction of real estate construction sector-specific factors to project risk management modelling.

scholarly journals DECISION-MAKING MODEL SUPPORTING THE PROCESS OF PLANNING EXPENDITURES FOR RESIDENTIAL BUILDING RENOVATION

2018 ◽  
Vol 24 (3) ◽  
pp. 1200-1214 ◽  
Author(s):  
Robert BUCOŃ ◽  
Michał TOMCZAK
Keyword(s):  
Decision Making ◽  
Residential Buildings ◽  
Residential Building ◽  
Point Of View ◽  
Existing Buildings ◽  
Suggested Model ◽  
Building Maintenance ◽  
Building Assessment ◽  
Decision Making Model ◽  
Building Condition

The problem of multi-family building maintenance is complex and comprises numerous issues, one of which is the process of planning expenditures for residential building renovation. This task is important from the manager’s point of view as their responsibility is to maintain a building in a non-deteriorated condition. To fulfil this task, the authors of this paper suggest utilising a decision-making model aimed at defining renovation activities making it possible to retain the maintenance standard (as regards newly commissioned residential buildings) or improve it (as regards existing buildings). The suggested model is based on a multi-criteria building assessment including seven requirements. The calculations conducted using the suggested model enable us to define the costs and scope of renovation taken to ensure the assumed building condition or, by assuming various rates paid to the renovation reserve, to define the period in which the above-mentioned goals may be achieved.

scholarly journals LIFE CYCLE ASSESSMENT OF TECHNICAL BUILDING SERVICES OF LARGE RESIDENTIAL BUILDING STOCKS USING SEMANTIC 3D CITY MODELS

2020 ◽  
Vol VI-4/W1-2020 ◽  
pp. 85-92
Author(s):  
H. Harter ◽  
B. Willenborg ◽  
W. Lang ◽  
T. H. Kolbe
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Demand ◽  
Residential Buildings ◽  
Residential Building ◽  
Building Stock ◽  
3D City Models ◽  
Methodical Approach ◽  
Operational Energy ◽  
City Models

Abstract. Reducing the demand for non-renewable resources and the resulting environmental impact is an objective of sustainable development, to which buildings contribute significantly. In order to realize the goal of reaching a climate-neutral building stock, it must first be analyzed and evaluated in order to develop optimization strategies. The life cycle based consideration and assessment of buildings plays a key role in this process. Approaches and tools already exist for this purpose, but they mainly take the operational energy demand of buildings and not a life cycle based approach into account, especially when assessing technical building services (TBS). Therefore, this paper presents and applies a methodical approach for the life cycle based assessment of the TBS of large residential building stocks, based on semantic 3D city models (CityGML). The methodical approach developed for this purpose describes the procedure for calculating the operational energy demand (already validated) and the heating load of the building, the dimensioning of the TBS components and the calculation of the life cycle assessment. The application of the methodology is illustrated in a case study with over 115,000 residential buildings from Munich, Germany. The study shows that the methodology calculates reliable results and that a significant reduction of the life cycle based energy demand can be achieved by refurbishment measures/scenarios. Nevertheless, the goal of achieving a climate-neutral building stock is a challenge from a life cycle perspective.

Risk analysis of construction of administration projects using Bayesian networks

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mohammad Osama ◽  
Aly Sherif ◽  
Mohamed Badawy
Keyword(s):  
Risk Factors ◽  
Life Cycle ◽  
Risk Analysis ◽  
Construction Industry ◽  
Construction Projects ◽  
Causal Relationships ◽  
Content Type ◽  
Project Life Cycle ◽  
Project Objectives ◽  
Project Life

Purpose This paper aims to enlighten the importance of the risk management process which is considered as a major procedure to effectively handle the potential inherent risks in the construction industry. However, most traditional risk analysis techniques are based on theories that deal with each risk factor as an independent, which does not take into consideration the causal relationships between risk factors. Design/methodology/approach This study aspires to identify the overall risk of the administrative construction projects in Egypt and to recognize the most influencing risk factors through the project life cycle by using Bayesian belief networks (BBN). Through a review of the literature, 27 risk factors were identified and categorized as the most common risk factors in the construction industry. A structured questionnaire was performed to estimate the probability and severity of these risks. Through site visits and interviews with experts in the construction field, 200 valid questionnaires were collected. A risk analysis model was developed using BBNs, then the applicability of this model was verified using a case study in Egypt. Findings However, the outcome showed that critical risks that manipulate administrative construction projects in Egypt were corruption and bribery, contractor financial difficulties, force majeure, damage to the structure and defective material installation. Practical implications The proposed study presents the possibilities available to the project parties to obtain a better forecast of the project objectives, including the project duration, total project cost and the target quality by examining the causal relationships between project risks and project objectives. Originality/value This study aspires to identify the overall risk of the administrative construction projects in Egypt and to recognize the most influencing risk factors through the project life cycle by using BBNs.

The Life Cycle Routes for the Green Residential Buildings in China’s Low-Carbon City Background

2011 ◽  
Vol 347-353 ◽  
pp. 1387-1390 ◽  
Author(s):  
Xiao Jia Gao
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Emission Reduction ◽  
Residential Buildings ◽  
Energy System ◽  
Low Carbon ◽  
Government Function ◽  
Low Carbon City

Construction industry is an important tache and constitute in low-carbon city and emission reduction. Under the background of China’s low-carbon city, this paper has summed up the features of green residential buildings, and proposed the effective routes for the construction green residential buildings during life cycle, finally some suggestions were given from energy system, technologies and the point of government function.

scholarly journals Risk Assessment Model Based on Fuzzy Logic for Residential Buildings

2021 ◽  
Vol 29 (4) ◽  
pp. 37-48
Author(s):  
Namdeo Hedaoo ◽  
Amey Pawar
Keyword(s):  
Risk Factors ◽  
Construction Projects ◽  
Residential Buildings ◽  
Construction Project ◽  
Significant Risk ◽  
Fuzzy Model ◽  
Residential Building ◽  
Assessment Model ◽  
Response Strategy ◽  
Industry Professionals

Abstract Risk is involved in every construction project. Residential building construction projects comprise a variety of risks and are more likely to be affected due to their difficulty and many operations and threats. The study aims to identify the various risk elements and their effect on construction projects of residential buildings using a fuzzy approach with the help of MATLAB software. This study includes 60 risk factors recognised through an expert opinion and literature review. These factors are categorised into 7 major groups, i.e., construction, project manager, architect/consultant, contractor, owner, resources, and external environment-specific risk factors. A questionnaire was prepared and sent using emails based on the identified risk factors to be filled out by construction industry professionals in India and by conducting in-person interviews. Based on the risk severities obtained from the fuzzy model, the top 10 risk factors have been considered. As a result, for identified top severe risk factors, a significant risk response strategy was implemented.

Safety concerns in China’s construction industry

2021 ◽  
Vol 18 (1) ◽  
pp. 143-152
Author(s):  
Tang Zhongsheng ◽  
Keyword(s):  
Organizational Structure ◽  
Construction Industry ◽  
Occupational Safety ◽  
Safety Management ◽  
Residential Buildings ◽  
Practical Importance ◽  
Method Comparison ◽  
Residential Building ◽  
Construction Safety ◽  
Construction Site

Objective: To study the main problems of labor process safety in the construction industry drawing on the example of the construction of residential buildings. To identify the main factors affecting the construction safety conditions. To propose a new organizational structure for workforce to improve safety management at the construction site. Methods: Analysis, synthesis, statistical method, comparison method, and legal analysis method were applied. Results: It has been established that the growth rate of China’s construction sector surpasses its regulatory framework, which needs to be changed as soon as possible. The state needs to make a concerted effort to unify labor safety standards at construction sites. Five factors were identified that affect the safety conditions during the construction of a residential building: human, construction equipment, environment, construction management and technical. As a result of the study, a new organizational structure for the working personnel has been proposed, based on strengthening supervision both by the management and among the workers in order to change safety conditions management at the construction site. A detailed analysis of the incidents that occurred in 2018 made it possible to identify the most frequent accidents related to construction safety, as well as their types. Construction failures are mainly attributed to management rather than technical aspects. Practical importance: The results obtained can become the basis for further research on occupational safety in China’s construction industry, training and lecture materials. The proposed organizational structure of the working personnel will enable construction companies to carry out construction projects most efficiently while observing all labor protection standards. It is necessary to update the legal framework in the field of working conditions safety.

Improvements of Energy Balance of Existing Residential Buildings

2014 ◽  
Vol 899 ◽  
pp. 139-142
Author(s):  
Mária Budiaková
Keyword(s):  
Energy Balance ◽  
Architectural Design ◽  
Residential Buildings ◽  
Residential Building ◽  
Heating System ◽  
Heat Pumps ◽  
Real Estate Market ◽  
Point Of View ◽  
Zero Energy ◽  
The Individual

The paper is oriented on searching for possibilities, which would approach the existing residential buildings to zero energy buildings. Existing residential buildings must remain competitive in the real estate market. Therefore, this paper is focused on progressive solutions, which application will significantly contribute to the approach towards zero energy balance. I have done my research on a concrete residential building in Bratislava. Scientifically I analyze the individual phases of improvement of this residential building. Firstly, I calculate the annual energy balance for individual phases, then I evaluate them. The basic improvement phases of energy balance of concrete residential building: insulation, regulation of heating system, application of heat pumps, application of solar collectors and photovoltaic modules. The scientific outputs are presented by well arranged graphs. Each improvement phase is analyzed in detail with introduced risks and contribution for energy balance. I will point out the problem of incorrect architectural design from the energy point of view, which remains a serious obstacle for further possible improvements with modern technological systems. By this research, I want to point out new possibilities for existing residential buildings.

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