Real Construction Research Articles

Analyzing `Language Features of Construction Contracts from The Multi-Dimensional Perspective

In recent years, China’s active participation in the international construction market has led to a greater demand for the comprehensive demystification of construction contracts from the language perspective. Nevertheless, scarcity can be felt concerning that perspective. This study aims to explore language features via the multi-dimensional approach proposed by Biber. A corpus-driven method was adopted on the basis of five real construction contracts. The salient language features were uncovered statistically by adopting the Multi-dimensional Analysis Tagger (MAT), and a series of visualized results displaying lexico-grammatical features and general genre features of construction contracts from different dimensions were also output. The results revealed that nouns and normalization were densely employed in construction contracts. Meanwhile, language variables like phrasal coordination, predicative modals, passive voice, and suasive verbs were excessively employed. The results also uncovered that adverbs and be as the main verb were counted as underused. As to the general genre features, the results suggested that the contracts were written documents with informational, non-narrative, context-independent, self-assertive, and abstract features. Those features stem from the communicative purposes of construction contracts, rendering construction contracts the formal style, explicit communicative purposes, objective stance, and authoritative position. Though with limited language features, we can still obtain an insight into the interpretation and teaching of construction contracts.

Comparison of ultrasonic and GPR methods for investigation of reinforced concrete columns

The presence of internal concreting defects such as pores, cavities, sinks, in load-bearing vertical structures can lead to serious consequences, up to accidents. In this regard, it is especially important to identify such defects is an important and relevant task during surveys of load-bearing structures of buildings and structures. At the same time, the search for internal defects is complicated by the fact that they may not be visible on the surface, but may be present in the body of structures. In order to control the quality of the erected monolithic structures, their instrumental examination is carried out with the identification of the possible presence of internal defects by the method of through ultrasonic sounding. The article discusses the comparison of ultrasonic and GPR methods for searching for internal defects in concreting reinforced concrete columns. The studies were carried out on real construction sites in which there were suspicions of internal defects in concreting of high columns. Conclusions are drawn about the possibilities and limitations of the methods. The resolution limits of the methods are presented. The results of the conducted studies show that, despite the relative modern popularity of ground-penetrating radar, ultrasonic methods can work equally well in this type of specific research scenario and have shown a high potential to overcome some inherent limitations of ground-penetrating radar when working with saturated reinforcement.

Study on a Portable Electrode Used to Detect the Fatigue of Tower Crane Drivers in Real Construction Environment

Study on a Portable Electrode Used to Detect the Fatigue of Tower Crane Drivers in Real Construction Environment

Comparing the safety awareness of workers on the virtual and real construction site using eye-tracking technology

Comparing the safety awareness of workers on the virtual and real construction site using eye-tracking technology

The Impact of Inflation on Real Estate Investment Perfomance And Effective Investment Decisions

Purpose: This study aims to examine the impact of inflation on key variables of real estate investment performance and investment decisions. Theoretical Reference: This paper considers several models of real estate investment performance indicators because the effect of inflation on key variables of real estate investment performance is an important factor in investment decisions. Since effective investment decision is key to avert investment loss especially during inflation period, this paper follows the suggestions by Otegbulu (2022) and Georgiv, et al (2002) that property incomes and values are not static during periods of inflation bur responds to economic dynamics, and could infact trigger favourable investment opportunities in real estate. This paper therefore follows these models/suggestions of Otegbulu (2022) and Geoargiv, et al, (2002) to examine several real estate investment to offer appropriate reflection of how inflation impacts of incomes from real estate investment. Method: Data collected were analysed using Pearson Correlation Analysis to determine the relationship between inflation rate and real estate investment performance (measured by annual returns). Regression analysis was also employed on the data to determine the level of contribution or degree of impact of inflation on real estate performance. Also data collected on the exchange rate and real estate performance over the study period were analysed using Pearson Correlation Analysis to determine the relationship between exchange rate and real estate investment performance (measured by annual returns on investment). Regression analysis was also employed on the data to determine the degree of impact of exchange rate on real estate investment performance. Data collected for the analysis and hypotheses testing were secondary data over a period from 2005 – 2022. Result: The study reveals that real estate investment market generates average total annual returns of 21.39% under average inflation rate of 12.5%. The test statistics (Pearson Correlation) results shows that the higher the inflation rate, the lower the performance of the real estate investment. Also, the study reveals that as inflation persists causing exchange rate fluctuations, the test statistics (Pearson Correlation) results shows that higher exchange rate causes lower performance of real estate investment. This could be because more than 90% of the real estate construction materials in the study are imported. Conclusion: It is clear and obvious that inflation impacts highly on real estate and capable of distorting projections in property investment. Rational investors must therefore factor in inflation risk in investment decisions. The study has shown that inflation has significant impact on annual returns of real estate and consequently affects investment performance. The study concluded that the higher the inflation, the lower the performance of the real estate investment and that the continuous rise in inflation rate reduces the purchasing power of the local currency leading to local currency devaluation. Also, it was concluded that higher exchange rate causes lower performance of the real estate in terms of annual returns. Research Implications: One of the major implications of the findings from this study is that as inflation raises the volatility of local currency which adversely affect the cost of construction, real estate investment performance is hindered. The risk element increases which could lead to project cost over-run, abandonment or increased vacancy rate. Investors become skeptical in making investment decisions because of uncertainties. Policy makers should put in place policies and guidelines that will attract cross-border investors who can take advantage of the local currency devaluation to improve their real estate investment portfolios. Originality/Value: The relationship between inflation rate, exchange rate and real estate performance (measured by rate of returns on the investment) is of great concern for real estate practitioners and investors. The study is original well thought efforts of the authors as contribution to real estate practice and education in developing economies currently being threatened by rising inflation. It is believed that this study will be very useful to global investors who will like to invest in the study area in particular and other emerging markets in general.

Lean in the public sector in Finland.

Finland is undergoing an immense change in the execution of real estate development and construction projects. Since 2011 nearly 100 projects have already been launched in the country with the Integrated Project Delivery (IPD) principle. The total value of the projects is close to 7.3 billion euros. The principles of integration are currently applied especially to project management contracts, but also to other traditional contract models with fixed content or fixed price. Implementation of the IPD models has triggered a change in work culture and practices across the whole construction field. Focus within the traditionally somewhat quarrelsome and fragmented industry has now shifted towards cooperation and continuous improvement – both important Lean principles. Experience from the integration of contracting authorities and service providers has shown the advantages to be achieved. The contracting authority can utilize the know-how of different parties from the start of the project, as designers and builders are planning ways of execution together. A joint development phase leads to better planning and more accurate budgeting as well as better commitment of different parties. The use of IPD models has also served as a significant basis for introducing Lean principles and tools in Finland. Without IPD models, especially the customers' awareness of the benefits of Lean methods would have remained low. Furthermore, the sharing of risks and benefits encourages the execution of projects with stricter adherence to budget and schedule. So far, all completed IPD projects have achieved the target schedule and budget. Despite minor shifts in the cost targets of the projects, all contracting parties have been satisfied with the achieved results.

Analysis of dynamic thermal behaviors for multi-stage hydraulic fracturing treatments in horizontal shale oil and shale gas wells

Accurate prediction of dynamic thermal behaviors during multi-stage hydraulic fracturing is profound which can avoid performance deterioration of fracturing fluids or failure of fracturing tools caused by severe temperature variation. This paper establishes a transient heat transfer model for multi-stage hydraulic fracturing in horizontal shale oil and shale gas wells (MFHWM), considering the real construction process of multi-stage hydraulic fracturing, the turbulent flow state, the heat source of viscous dissipation and the complex wellbore structure, which enables the accurate simulation of thermal behaviors in the early time of multi-stage hydraulic fracturing with large flow rate. The verification results of measured temperature data and simulation data prove the MFHWM has good precision. Numerical simulations indicate that the temperature distribution exhibits the characteristics of cyclic “cool-down” and “warm-back” and “stair-step” during the multi-stage hydraulic fracturing. In the “cool-down” period, the temperature drops sharply within the first hour and then the deceleration slows down. In the “warm-back” period, the temperature recovers exponentially relying on the shut-in time. The “stair-step” is caused by changing of heat transfer mechanism from convection to conduction. Moreover, the cyclic cooling has little effect on the total temperature drop and subsequent stages are not significantly cooler than previous stages. Besides, primary factors affecting temperature distributions of wellbore-formation system are discussed thoroughly. Results indicate that the viscous heat source cannot be ignored for multi-stage hydraulic fracturing and the temperature difference exhibits cyclic variation when considering and without considering the viscous heat source. In addition, the minimum temperature during each-stage-fracturing operation decreases first and then increases as the injection rate of fracturing fluid increases because of the compromise between the viscous heat source and forced convection. Furthermore, temperature distributions can be controlled by changing the injection temperature of fracturing fluid. As the injection temperature increases, a positive proportional relationship exists between the minimum temperature of fracturing fluid and the injection temperature. MFHWM can be a standalone tool to analyze temperature distributions of multi-stage hydraulic fracturing. It can also be used to provide better boundary conditions for stress analysis model of casing and cement sheath.

Railroad infrastructure investment and economic performance in Portugal: An industry-specific analysis

This study addresses the crucial question of the macroeconomic impact of investing in railroad infrastructure in Portugal. The aim is to shed light on the immediate and long-term effects of such investments on economic output, employment, and private investment, specifically focusing on interindustry variations. We employ a Vector Autoregressive (VAR) model and utilize industry-level data to estimate elasticities and marginal products on these three economic indicators. Our findings reveal a compelling positive long-term spillover effect of these investments. Specifically, every €1 million in capital spending results in a €20.84 million increase in GDP, a €17.78 million boost in private investment, and 72 new net permanent jobs. However, these gains are not immediate, as only 14.5% of the output increase and 38.8% of the investment surge occur in the first year. In contrast, job creation is nearly instantaneous, with 93% of new jobs materializing within the first year. A short-term negative impact on the trade balance is expected as new capital goods are imported. Upon industry-level analysis, the most pronounced output increases are witnessed in the real estate, construction, and wholesale and retail trade industries. The most substantial net job creation occurs in the construction, professional services, and hospitality industries. This study enriches the empirical literature by uncovering industry-specific impacts and temporal macroeconomic effects of railroad infrastructure investments. This underscores their dual advantage in bolstering long-term economic performance and counteracting job losses during downturns, thus offering valuable public policy implications. Notably, these benefits are not evenly distributed across all industries, necessitating strategic sectoral planning and awareness of employment agencies to optimize spending programs and adapt to industry shifts.

Application of Green Energy-Saving Technologies in Green Buildings in Real Estate Construction

Energy saving and low-carbon environmental protection are not only simple policy requirements but also bring impetus to the development of green buildings. The real estate construction business has become concerned. The construction process not only consumes huge capabilities and resources, but also causes varying degrees of damage to environmental products. Therefore, the comprehensive application of green building energy-saving technology in real estate development does not cater to the needs and preferences of current consumers, but is based on major challenges in the construction of national ecological civilization and future industry trends. This article mainly starts with the basic form and function of energy-saving technology in green buildings and discusses the effective application of building ground construction. This text analyzes the green building energy-saving technology and its current application status. Some problems exist: the building materials are not up to standard, and the process is not kept in mind. Some green energy-saving technologies have been applied in real estate construction: increasing the green energy-saving material markets and the supervision of material procurement, improving workers' ability to apply green and energy-saving technologies, correcting the attitude towards green building energy-saving technology, coordinating design and planning in real estate construction, determining the application criteria of green technology, and adhering to the principle of on-site and improve the energy-saving effect.

LFEA-Net: semantic segmentation for urban point cloud scene via local feature extraction and aggregation

Considering the increasing prominence of 3D real city construction technology, 3D urban point cloud scene data merit further investigation. However, achieving finegrained semantic segmentation of urban scenes remains highly challenging due to the natural orderlessness and unstructured nature of acquired point clouds, along with their large-scale points and non-uniform distributions. In this study, we present LFEA-Net, a novel neural network specifically designed for semantic segmentation of large-scale urban point cloud scenes. The network comprises two main components: (1) The local feature extraction (LFE) module, which fully exploits local spatial, color and semantic information to enhance and preserve crucial information, consisting of bilateral feature encoding unit and multidimensional feature encoding unit. (2) The local feature aggregation (LFA) module, designed to bridge the semantic gap between local information and emphasize both local significant features and the entire local neighbor, consisting of soft cross operation and united pooling operation. We have evaluated the performance of LFEA-Net with state-of-the-art networks using the photogrammetric point cloud dataset SensatUrban, achieving 61.6 of mIoU score. The results demonstrate the superior efficacy of LFEA-Net in accurately segmenting and classifying large-scale urban point cloud scenes, highlighting its potential to advance environmental information perception.

QUALITY VERIFICATION OF OVERALL PLANNING SATELLITE REMOTE SENSING IMAGES PRODUCT FOR REAL 3D CHINA CONSTRUCTION PROJECT

Abstract. The overall planning of satellite remote sensing image products is an important part of the real 3D China construction project and an important measure for the overall management of remote sensing images. During the two years of implementation of the project in 2021 and 2022, we have organized and completed 9 versions of 2-meter resolution satellite remote sensing image products, each of which covers the land territory of the whole country (not less than 95% in principle). Image products are widely used in natural resources investigation and monitoring, basic surveying and mapping, geological survey, natural resources supervision, law enforcement and other fields, which effectively improves the guarantee capability of surveying and mapping geographic information services. Taking the 2022 2-meter resolution integrated satellite remote sensing image product as the research object, this paper first introduces the highlights of the product itself, that is, timeliness, availability and reliability. then the product quality is studied from six aspects: spatial reference system, position accuracy, logical consistency, time accuracy, image quality and attachment quality. On this basis, according to the characteristics of different geographical regions, seasonal time series, topography and geomorphology, 100 representative verification samples were selected from the overall satellite remote sensing image products in 2022 for experiments, the distribution law of product quality characteristics was analyzed, and the main quality problems were summarized.

Управление строительством с иcпользованием компьютерного зрения на строительной площадке

The article presents algorithms for solving the problem of computer vision to control the implementation of rules and requirements for the performance of work on a construction site. A general approach to algorithm development is described, including the structure and method used to collect construction site image data, the structure of the training image data set, the method of enlarging the image data set and the basic artificial intelligence model used for training. The developed and tested object recognition models will be applied to real construction sites, which will reduce the number of accidents involving construction workers, and use resources efficiently.

Pengaruh CEO Narcism, Corporate Social Responsibility Syariah, Profitabilitas, dan Likuiditas, Terhadap Nilai Perusahaan (Studi Empiris pada Real estate, property dan construction yang Terdaftar di Bursa Efek Indonesia Periode Tahun 2017-2021)

This study aims to examine the influence of CEO Narcism, CSR, ROA and Liquidity on company value. The problem in this study is shown by the value of stock price growth from the property, real estate and construction sectors showing a decline in 2018 to 2020. Based on the problem, the problem in this study is: How does the CEO of Narcism, Corporate social responsibility, profitability, and liquidity affect the company's value in Real estate, property and construction listed on the Indonesia Stock Exchange for the 2017-2021 period)?. This research uses secondary data in the form of financial statements obtained through the Financial Services Authority website. This study used purposive sampling method. The population in this study is all property, real estate and construction companies whose shares have been listed on the IDX since 2017-2021. A total of 53 companies were selected as research samples during 2017-2021. The analysis method used in this study is multiple regression analysis. Based on the results of data analysis and discussion that has been put forward about the influence of CEO Narcism, CSR, ROA and Liquidity on company value, it can be concluded that ROA has proven to have a significant effect on company value, this indicates that the increase in company value is influenced by an increase in ROA, meaning ROA policy What the company does affects the value of the company. CEO Narcism, CSR and Liquidity have not proven to have a significant effect on company value.

Face failure of EPB shield tunnels in dry dense sand: a model test and DEM study

This study aims at addressing the face failure of earth pressure balance (EPB) shield tunnels in dry dense sand by model tests and discrete element method (DEM) models. The model tests incorporated a miniature EPB shield which could fully reproduce the real tunnel construction of excavation and support. DEM models simulating the model tests were developed to capture the underlying face failure mechanism. Results show that both the limit support pressure obtained at chamber board and tunnel face increase with increasing C/ D ( C is tunnel cover depth, and D is tunnel diameter). The ratio of the former to the latter approximates 0.60 due to the soil retaining of cutter head panel, and it is independent of C/ D. The local face failure initializes around tunnel face and develops directly to the global failure outcropping the ground surface in one phase with C/ D ≤ 1.0, while the local failure develops to the global failure in three phases with C/ D = 2.0 due to the soil arching evolution. The soil arching gets weaker when it propagates upward, and the horizontal stress concentration in the longitudinal direction is stronger than the transverse direction due to the difference of arch foot.

Actualizing societal membership in imaginary interaction: The "real construction of society" in the opening of current affairs TV discussion.

The wonder of modern mass-scale society has preoccupied sociological theorists for centuries. How does the whole live on and function? At the extreme of strong empirical traditions, conversation analysis focuses on studying the interactional organization of ongoing action and identities. My article puts these two inquiries together to explore the broader relevancies of situated talk and evidence the skillfulness of social actors in managing multi-scaled cultural memberships simultaneously. Approaching society as a processual accomplishment, this article investigates the instantiation of "societal membership" in a mundane institutional setting of broadcast television. The aim of the article is to experiment with how classical theoretical conceptualization can feed into methodological insight and how detailed empirical scrutiny can enrich our theoretical understanding of the mysteries of modern co-existence. This entails casting an analytic eye on the duality of structure and action. The article re-examines the structural scope of on-site interactional achievements. From an opposite angle, it highlights how integrative societal structures are made real and maintained in the art of interactional encounters. This two-way dynamic is exemplified by scrutinizing a fragment of a televised current affairs program. A set of theoretical key concepts is introduced to shed light on the societal orientations of participants in the opening talk of the program. The opening talk addresses an imaginary audience directly via the camera. It provides a view of the interactional methods used by journalists to invoke relevant identifications for the anticipated recipient at a distance. The encounter is imagined, yet instead of imagining a community in the reception, the analytic focus of the article is on actualizing society in the production of the talk. The spatially and temporally organized societal membership materializes in social relations and interdependencies, which are constituted through intersubjective interpretations, normative positionings, and interactional choices by intentional and knowledgeable actors in the routines of everyday life. The article reverse-engineers the relational framework of the deliberative public sphere enacted in mediated interaction as a collaborative scene of the democratic system. This is achieved by explicating the contextually embedded acts of societization taking place in a journalistically regulated field of participation by means of quasi-interactive public speech.

THE COMPLEX PROBLEM OF EXPANDING THE CAPABILITIES OF CADASTRAL SYSTEMS AND WAYS TO SOLVE IT

The development of cadastral systems in various countries, including Ukraine, has gone through creating information systems that serve users (stakeholders) in one of the subject areas, such as land administration, real estate construction, water resources, and others. Modern cadastral systems have no capacity to solve complex problems, and, at the same time, their structure does not contain specialised mathematical support in the form of models capable of simulating complex processes. Intelligent cadastres will be able to solve complex problems. Along with the existing types of cadastre support, intelligent cadastres should have well-structured mathematical and heuristic support. It should allow for solving private computing and service tasks, as well as loosely structured ones with a high degree of uncertainty, and provide good visualisation and detailing of objects, processes, and phenomena based on cloud and other modern information technologies. We propose introducing an intelligent cadastral system, presented as a geoinformation system with components of both a decision support system and a system for manipulating thematic layers. The decision support system should contain typical models used during the formalisation of one or another subject area or as a variant of the formal model of the subject areas’ description. The thematic layers manipulation system should allow the integration of attributive data belonging to different subject areas. In this case, ensuring prompt and fruitful work of cognitologists with experts is essential. The shortage of time and the variety of problems to be solved require the development of technology for formalising the knowledge of experts or specific subject areas. Implementing this technology and ensuring its implementation will require the creation of banks of typical knowledge models, which should store standardised procedures for formal representations. The bank of formal representations of heuristic knowledge includes procedures for forming production rules, building semantic and other networks, building frame representations and genetic algorithms, and so on. The bank of formal logical procedures contains procedures for creating logical rules based on the logic of statements, rules of logical inference based on the predicate logic, procedures of other modal logics, in particular, the presence logic, and procedures for building logical constructions based on the theory of categories and functors. Keywords: cadastral system, geoinformation system, decision support system, thematic layer manipulation system, formalisation.

Fusion of Environmental Sensors for Occupancy Detection in a Real Construction Site

Internet-of-Things systems are increasingly being installed in buildings to transform them into smart ones and to assist in the transition to a greener future. A common feature of smart buildings, whether commercial or residential, is environmental sensing that provides information about temperature, dust, and the general air quality of indoor spaces, assisting in achieving energy efficiency. Environmental sensors though, especially when combined, can also be used to detect occupancy in a space and to increase security and safety. The most popular methods for the combination of environmental sensor measurements are concatenation and neural networks that can conduct fusion in different levels. This work presents an evaluation of the performance of multiple late fusion methods in detecting occupancy from environmental sensors installed in a building during its construction and provides a comparison of the late fusion approaches with early fusion followed by ensemble classifiers. A novel weighted fusion method, suitable for imbalanced samples, is also tested. The data collected from the environmental sensors are provided as a public dataset.

METHODOLOGICAL ASPECTS OF ENGINEERING AND TECHNOLOGICAL ISSUES OF FACADE SYSTEM DESIGN TAKING INTO ACCOUNT THE REQUIREMENTS OF CURRENT BUILDING ENERGY EFFICIENCY TRENDS

Purpose. The study of existing approaches to the assessment of the energy efficiency of external enclosing structures and the technical and economic justification of the choice of structural solutions of facade systems for equipping the external enclosing structures of the «Yunist» substation in the city of Zaporizhzhia on the basis of variable design, which allows to reduce heat costs for heating and the energy consumption of building operation. Methodology. An important role in the research is played by the formation of knowledge and skills in the use of a modern design and technological approach to solving the problems of choosing a facade system in the design of buildings to obtain maximum energy efficiency and separation of the style of the building in the conditions of urban development. Findings. The work examines the methods of determining the indicators of operational efficiency of facades of buildings and structures, as well as studies additional information from foreign and domestic sources, analyzes typical projects that have already been implemented on the territory of the city of Zaporizhzhia. In the course of the work, effective organizational and technological solutions for facade works were developed on the basis of experimental and statistical modeling. Originality. A comprehensive review of aggregated costs for the execution of external finishing works, structural features of the facade system with the nature of the action of atmospheric factors, taking into account the architectural solutions of the real construction site in the city of Zaporizhzhia. The analysis of the research results showed that high efficiency of facade works at low costs can be achieved only when choosing and designing engineering solutions that combine the design of the facade system and the environmental characteristics of the building object. Practical value. Recommendations regarding taking into account the climatic and ecological characteristics of the city of Zaporizhzhia, where the «Yunist» station is located, their impact on the operational efficiency of the decorative elements of the facade.

Antecedents of marketing climate change adaption construction materials: Evidence from Ghana

Purpose: Climate Change affects all countries in the world. It impacts negatively on the living conditions of humankind, especially livelihood, temperature change, rainfall regime, and rise in tidal waves. Design/Methodology/Approach: The population in the real estate industry. A descriptive design was used, including questionnaires, to gather data. Since the study sought to examine the willingness to purchase accordingly, a logit regression model was used to predict the likelihood that the dependent variable willingness to pay (WTP) equals 1 (rather than 0). Findings: Income level, price of the products, respondent’s age, gender, and availability of policies concerning eco-friendly products and identified associated health risks positively influence respondents’ WTP. The study reveals that in the real estate sector of the Ghanaian economy, there is a positive WTP eco-friendly roofing product; hence, entrepreneurs and investors should take advantage of the urgency to reduce the impact of climate change in Ghana by investing in eco-friendly products for both the real estate and construction sectors of the economy. Recommendations: The results show that any eco-friendly roof material must raise consumer awareness about the effects of climate change and shape consumer perceptions.

IMPACT OF MANAGERIAL OWNERSHIP, COMPANY SIZE AND CAPITAL STRUCTURE ON COMPANY VALUE THROUGH PROFITABILITY IN COMPANY SECTORS PROPERTY, REAL ESTATE AND BUILDING CONSTRUCTION LISTED ON INDONESIA STOCK EXCHANGE PERIOD 2019–2021

The research aims to test and analyze the influence of managerial ownership, the size of the company, and the capital structure on the value of a company with profitability as an intervening variable. In this study, the researchers used external data obtained from the Indonesian Stock Exchange, which processed data of the Company's property, real estate and building sectors listed during the period 2019-2021. Sampling using purposive sampling, where the population is 32 companies so in a three-year period of 96. The data analysis process is statistically tested using Structural Equation Modeling (SEM) with a Partial Least Square (PLS) approach and the processing medium is SmartPLS 3.2.9. The value of the company is still a factor that investors pay attention to the ratio used is Price to Book Value, which is a simple valuation method and can be used by investors to analyze whether the price of a stock is undervalued or overvalued. The sectors used in property, real estate and building construction have brilliant prospects and are supported by the government and the valuation of corporations belonging to them has a significant influence on the state. The sector of real estate, building and construction has a relatively stable PBV ratio to a relative stable share price, so the researchers are looking at other financial ratios that are related to profitability and can affect the value of the company. The results show that capital structure and profitability don’t effect the company, but managerial ownership and the size of a company have a negative effect on the company's value. Profitability cannot mediate the effect of managerial ownership, company size and capital structure on the company's value. With this research, the Company can increase the value of the Company and strive to profitability that benefits the investor or the company itself, then able to perform tasks or responsibilities for decision-making with stability and vigilance. Meanwhile, companies are able to evaluate the factors that can affect the value of the company and consider which items need to be upgraded. The research focuses on managerial ownership, company size, capital structure, company value and profitability. It's done because we're so interested in this phenomenon. Company value items are like mirrors that can reflect the company's market assessment and help investors determine the viability of the company to invest in.