Serdar Ulubeyli

• Full Professor, PhD
• Head of Department at Bülent Ecevit University

The next step for the exploration of space seems to require the human participation by means of a long-lasting lunar outpost. Therefore, this paper attempts to review the up-to-date knowledge regarding prominent issues surrounding the construction stage of a permanent base on the Moon in the light of the 3D printing process. In this context, a numb...

Purpose Many construction companies use the diversification strategy to take advantage of its various advantages. However, previous studies on this strategy have neither analysed its management perspective nor considered the pre-diversification stage of construction companies. The purpose of this study is to provide a detailed discussion about the...

This study addresses the scientific issue of the insufficient systematization of knowledge about the barriers to electronic tendering (E-Tendering) in the construction industry. This study is critical because it can potentially promote more effective, transparent, and environmentally friendly procurement practices, which can help with sustainable d...

The traditional paper-based tendering processes are very fast becoming obsolete due to the advances in technology these past few years. The electronic tendering system is observed as a tool and process for improving efficiency and encouraging the construction industry stakeholders and experts to better oversee the tendering procedure, thereby minim...

Diversification, in the context of economic development, is a multifaceted concept that has long been associated with the pursuit of sustainable economic growth. This study aims to examine the relationship between diversification and economic growth from the perspective of the construction industry. Moreover, through a comprehensive review of exist...

Purpose This study aims to present the financial performance of companies and investment areas in the real estate investment trust (REIT) industry. Design/methodology/approach A fuzzy model for financial performance measurement (FM-FPM) was proposed through the collaboration of fuzzy axiomatic design (FAD) and fuzzy entropy weighting (FEW). For th...

Energy consumption of buildings is one of the most significant issues of the global warming. Buildings should be sustainable, healthy, comfortable, grid-friendly, and economical to construct and maintain. Positive Energy Building (PEB) concept has been discussed over the last years. A PEB refers to a building with a zero or negative net energy cons...

In the present study, real estate investment trust (REIT) industries in the international arena were evaluated from the viewpoint of portfolio managers and stock investors. First of all, general information about REITs was given, and their unique advantages and disadvantages were presented. Then, the historical development, legal infrastructure, fi...

In this study, a review-based academic research on real estate investment trusts (REITs) was conducted. This is because REITs have an important place for stock investors and portfolio managers all around the world. Towards this aim, descriptive information about the general structure of REITs was first given. Then, the purpose, data set, and method...

Construction industry is generally accepted as risky and low profitable. This creates a highly competitive environment for construction companies. Therefore, strategic management becomes valuable to survive in such a business environment. Within the context of strategic management, different strategic perspectives and methods can be implemented to...

Chaos is the science of irregular, complex, nonlinear, dynamic, and instable systems. This type of mechanisms may show an order due to interdependencies among their components, and easily be estimated in some times. Thus, chaos theory may present some significant advantages in detecting interrelations among components of a system in unpredictable s...

Construction industry makes a significant contribution to the sustainable economic growth of countries. However, it is known to be highly competitive, unstable, and low profitability. Therefore, the importance of strategic planning of construction companies has long been emphasized in both developed and developing countries. Strategy development is...

Recent technological advancements are making the traditional paper-based tendering methods quickly becoming obsolete. E-tendering is widely regarded as a valuable tool for enhancing efficiency and empowering construction industry experts to better oversee the tendering process in order to reduce project delays and increase profits. Despite the bene...

A new technology concept, Internet of Things (IoT), has drawn a significant interest in several industries. This technology is a network of sensors, actuators, or machines to facilitate real-time communications between these items in the environment of computer applications. The construction industry may have a great potential to experience IoT's a...

In Turkey, the construction industry is almost always among industries with poor health safety records. In this respect, a broader evaluation of past studies may reveal the current health and safety performance of the construction industry and provide a useful framework for future efforts. The aim of the study is to conduct a systematic literature...

This study aims to select the most suitable truck-mixer drum (TMD) for construction firms and to present a scenario-based approach to the construction equipment selection problem through the fuzzy data envelopment analysis (FDEA). The technical data of TMDs for quantitative criteria were initially obtained from three TMD companies operating in Turk...

Turkey's Occupational Health and Safety Code, issued in 2012, has triggered a wide range of practical changes in the Turkish construction industry.

The construction industry has started to pay more attention to the concepts of performance measurement and performance management in order to meet the increasing competition, customer satisfaction and quality requirements similar to all other sectors. Compared to other industries, the construction industry is not a pioneer in performance management...

Purpose The purpose of this paper is to report the possible impact of intellectual capital (IC) on firm reputation (FR) and investigates if there is a relationship between FR and market internationalization (MI). Design/methodology/approach The data were collected from engineering consultancy firms (ECFs) in Turkey. The study employed structural e...

An unmanned aerial vehicle (UAV) is an aircraft system that is controlled autonomously or by a pilot on the ground. The use of UAVs has started in military operations and transferred to the commercial use in numerous industries. In these industries, UAVs were usually utilized in mapping applications, environmental change monitoring, disaster preven...

In recent years, a new technology concept, Internet of Things (IoT), has drawn a great interest. This technology aims to share information across platforms enabling innovative applications. Moreover, it can be considered as a network of sensors, actuators, or machines to facilitate real-time communications between these items in the environment of...

This paper reports a study of order and truck-mixer based planning coefficients used to avoid or utilise fresh concrete waste. To achieve this objective, an original calculation procedure was proposed to quantify the fresh concrete waste, and direct quantitative measurements were performed in three batching plants in Turkey. Data obtained were anal...

In today's intense competition environment, businesses must always perform highly in order to achieve their goals. It is obvious that the monitoring, evaluation and measurement or management of the performances of both the enterprises and their employees will increase the performance of the enterprise in a positive way in the future. In particular,...

As a result of the intense competition environment in the construction sector and the complexity of the construction business depending on the developing technology, inadequacies in the monitoring of the activities of the enterprises have emerged with the classical control methods. As a solution to this new situation, COSO internal control model co...

The complex structure of the construction sector necessitates of expertise of the combination different areas and many uncertainties in its structure make construction projects vulnerable to risks. One-off and unique production of construction projects diversifies and increases the risks. These risks, in large numbers and varieties, constitute an o...

For the last decade, green buildings have created a new industry of ecological buildings. However, this industry is still newly developing and finds limited implementation opportunities when compared with the traditional building industry. Therefore, for a more preferable green building industry, strategic factors that can have significant effects...

The rapid development of technology throughout the world, the spread of communication networks, the availability of information easily, the globalization of competition, the financial scandals and crises in various countries has increased the need for effective control mechanisms in time. As a result of the financial crisis that started as a mortga...

Today, as a result of the increasing complexity of business structures, deficiencies in monitoring the activities of businesses have emerged with classical control methods. In order to respond to these needs, COSO internal control model consisting of five independent professional organizations in the United States has emerged, which is a pioneer in...

Green roofs have been established for over 100 years, and in the last few decades many scientific studies have focused on minimizing environmental pollution, cooling performance, efficiency, and survival of plants, as well as a wide range of economic, environmental and social benefits. Environmental concerns, bad and commercial concerns, which have...

Construction and demolition waste (CDW) is one of the major environmental problems, and thus, should be considered as a significant component of sustainable built environment. The process of construction, renovation, and demolition of buildings and structures causes a mass amount of CDW. Therefore, many countries have implemented CDW management pol...

The construction sector incorporates different projects, disciplines and experts and has a complex production process from design to construction. The unique characteristics of the sector directly or indirectly prevent the achievement of quality, time and cost targets. This makes the preparation process for bidding in construction projects critical...

The concept of control can be defined as the whole of the measures that the management has put forward in order to reach the targets and objectives that it has previously determined. On the other hand, internal control is a management tool that brings resolution to managerial problems, increases the efficiency, effectiveness, abuse prevention and i...

The increasingly competitive environment of the construction sector requires companies to be proactively managed with strategic management, risk management, internal audit, and system improvement strategies. Therefore, construction companies must be in a constant manner of change and improvement. In order to ensure the continuity of these efforts a...

The amount of ready-mixed concrete (RMC) production in Turkey was 109 million m 3 in 2016. The production was performed by 570 RMC companies based on their own 1,120 plants. With this huge potential, the RMC sector can be considered as one of major sub-sectors in the construction industry in Turkey. However, problems or disputes encountered in this...

The competition between companies operating in the construction industry is known to be too intense. These companies usually and inevitably compete with each other by minimizing their costs and by maximizing their profits. Therefore, this study aims to show how much a prevention cost encountered in following a required quality standard in the activ...

Purpose This paper aims to present the effect of innovation on implementing competitive strategies (CSs) and to find their relationships on the survival of construction-related small- and medium-sized enterprises (SMEs) in macroeconomic crises. Design/methodology/approach Data were compiled from construction SMEs in Turkey. The research used struc...

This huge amount of people with special needs should have proper conditions to be active in daily life. Some legal regulations were issued in the country to create accessible cities. In this respect, local authorities are responsible to build an accessible environment for these people. Great attention is also expected from construction professional...

Ready-mixed concrete (RMC) is the mostly used construction material in the world. In 2016, RMC of 109 million m 3 was consumed in construction activities in Turkey. This substantial amount gives a pivotal role to RMC for the Turkish construction industry. Therefore, problems of RMC users may have a significant impact on the construction industry in...

Green roofs have many well-known economic, environmental, and social advantages for sustainable built environment. However, they are still implemented very limitedly in most countries around the world. Similarly, considering their few examples in Turkey, their practical applications attract little attention of professionals in the Turkish construct...

Waste materials are one of the most significant problems that the construction industry faces because of their harmful effects on the natural and built environment. To solve this problem, construction firms should implement a proper waste management strategy. In doing this, there are three main measures such as reducing, reusing, and recycling. In...

Wastes generated in the process of construction, renovation, and demolition of buildings and structures are described as construction and demolition waste (C&DW). In many countries, C&DW is regarded as one of the major issues that threaten the environment and its embedded raw materials. In order to overcome this problem, there are three basic optio...

During the last decades, especially in large-scale construction projects, it is one of the widely applied strategies that the main contractors work with many subcontractors and overtake a large part of the works. This trend brings out the problem of selection of subcontractors. The classical approaches in the construction industry to select the sub...

An international construction project executed by poor-quality subcontractors leads mostly to time and cost overruns, reworks, conflicts, and dissatisfaction of customers. Therefore, this paper presents a study of subcontractor selection criteria in international construction projects. Toward this aim, an in-depth survey was administered to 96 cons...

Many batching plants are reluctant in recycling the returned fresh concrete. However, leftover concrete may present great potential as it is always observed in truck-mixers. Therefore, viability of mechanical reclaimers was economically investigated considering the leftover concrete capacity. Toward this aim, availability of reclaimers in Turkey wa...

Occupational accidents and diseases cause loss of life and permanent disability in Tukey and all around the world. In Turkey, occupational accidents and diseases have become a social problem because of their irreparable effects on individuals. Recent-well conducted studies demonstrate that the construction industry is the most risky industry in ter...

In Turkey, the construction industry is almost always among industries with poor safety records. In the related literature, safety performance of construction professionals has largely been investigated up to date. However, researches concerning the working conditions and responsibilities of occupational safety experts (OSEs) seem to be very scarce...

Construction industry in most countries relies heavily on small and medium enterprises (i.e., subcontractors). Therefore, in today's highly competitive construction business, it is inevitable to select suitable subcontractors which physically execute almost all of production activities in construction projects. In this context, through a proper sel...

For the last decade, green buildings have created a new industry of ecological buildings. However, this industry is still newly developing and finds limited implementation opportunities when compared with the traditional building industry. Therefore, for a more preferable green building industry, strategic factors that can have significant effects...

In recent years, quality management became an important topic for the construction industry. This topic attracted the attention of many researchers and numerous researches were conducted in the literature. Although, quality management is common among institutionalized construction firms, small and middle-sized firms neglect it. Construction project...

In construction projects architectural drawings are the main documents which show how a structure has to be built. In this sense, most of the data necessary for project management are prepared based on these drawings. Therefore, architectural drawing errors will adversely affect the constructability and hence, the time and cost of a construction pr...

The increasing environmental concerns and poor practices force construction industry to take some remedial measures for green and sustainable built environment. Especially in urban areas, one of these measures is to build green roofs for minimizing the environmental pollution. In fact, green roofs present a number of economic, environmental, and so...

The construction industry is the major component of economic systems, especially in developing countries, thanks to economic size and employment rates of the sector. As a developing countries, Turkey and Algeria stand out from the rest in an economic sense of construction markets. Although Turkish and Algerian construction markets are known to be a...

In recent years, especially, Turkish construction firms have been executing many construction projects in Arabian and African continents, as well as in adjacent countries. In parallel to the increased demand for construction projects, the number of Turkish construction firms working in the African construction market has increased considerably star...

In Turkey, the construction industry is almost always among industries with poor safety records. In the related literature, safety performance of construction professionals has largely been investigated up to date. However, researches concerning the working conditions and responsibilities of occupational safety experts (OSEs) seem to be very scarce...

Occupational accidents and diseases cause loss of life and permanent disability in Tukey and all around the world. In Turkey, occupational accidents and diseases have become a social problem because of their irreparable effects on individuals. Recent-well conducted studies demonstrate that the construction industry is the most risky industry in ter...

An international construction project executed by poor-quality subcontractors leads mostly to time and cost overruns, reworks, conflicts, and dissatisfaction of customers. Therefore, this paper presents a study of subcontractor selection criteria in international construction projects. Toward this aim, an in-depth survey was administered to 96 cons...

Strategic planning has become vital for firms to sustain existence in today's highly competitive business conditions. Long period of execution time and high level budget are required specifics for construction projects. These characteristics of projects necessitate strategic planning especially in construction industry. Risk management is principal...

In today " s highly competitive business environment, governments in general and companies in particular are in search for an easy access to international markets. In this regard, loans that have low interest rates are of extreme importance for private firms. In fact, Exim Bank, as an export credit agency, officially provides this opportunity in ma...

Public construction projects financed by World Bank or other international institutions and executed according to FIDIC-type contracts provide a considerable value-added input to developing and developed economies through their parties in these projects. Based on this widely recognized characteristic of FIDIC around the world, it can be accepted as...

The increasing environmental concerns and poor practices force construction industry to take some remedial measures for green and sustainable built environment. Especially in urban areas, one of these measures is to build green roofs for minimizing the environmental pollution. In fact, green roofs present a number of economic, environmental, and so...

Construction industry in most countries relies heavily on small and medium enterprises (i.e., subcontractors). Therefore, in today " s highly competitive construction business, it is inevitable to select suitable subcontractors which physically execute almost all of production activities in construction projects. In this context, through a proper s...

Bu çalışmanın amacı, inşaat sektöründeki makine seçimleri problemine, beton pompası açısından yaklaşmak ve beton pompası üreticileri ve kullanıcılarına, üretim ve satın alma süreçlerinde yardımcı olabilecek bir yöntem ortaya koymaktır. Bu kapsamda, çok ölçütlü karar verme problemlerini çözmek için kullanılan yöntemlerden biri olan veri zarflama ana...

Today, recycling of construction and demolition waste (C&DW) by plants is a reasonable alternative to the existing unsustainable disposal methods such as landfilling and fly tipping. Therefore, this study aims to report current management issues of these plants in the literature. As a result, it was seen that these management issues investigated in...

This study aims to develop a fuzzy force assessment model (FFAM) for quantifying industry-wide competition conditions (CCs) using five-force framework. It employed fuzzy synthetic evaluation to assess CCs of forces and industry, and real case of Turkish cement industry was demonstrated. As a result, FFAM provides a comprehensive and practical devic...

Time, cost, and quality (TCQ) as a triple constraint of construction projects have dependent and conflicting objectives. Considering the limited resources, estimation of the approximate TCQ is a complex and dynamic problem. In addition, the uncertain nature of construction projects and highly variable alternatives make the decision making process a...

Labor productivity has a significant impact on time, cost, and quality of a construction project. Especially the competitive environment of the construction industry forces construction companies to increase their labor productivity values in order to keep their positions in the industry. In this respect, identification and evaluation of factors th...

zet İş kazaları ve meslek hastalıkları Türkiye'de ve dünyada birçok insanın yaşamını kaybetmesine neden olmaktadır. Benzer şekilde, iş kazaları ve meslek hastalıkları sonucu birçok insanda kalıcı sağlık sorunları meydana gelmekte ve çalışanların yaşam kalitesi çok önemli bir şekilde azalmaktadır. Bundan dolayı, özellikle Türkiye'de, iş kazaları ve...

As the fresh concrete waste has a high potential to damage the environment, current methods for the utilization of the returned ready-mixed concrete were presented throughout this study. Toward this aim, an in-depth literature review was performed as a methodological approach. Thus, types of the returned concrete were first explained and the existi...

Özet: İş Sağlığı ve Güvenliği (İSG) Kanunu'nun amacı, işyerlerinde İSG'nin sağlanması ve mevcut sağlık ve güvenlik şartlarının iyileştirilmesi için işveren ve çalışanların görev, yetki, sorumluluk, hak ve yükümlülüklerini düzenlemektir. Yürürlükte olan mevzuata göre uzmanlar, görevlerini mesleki etik ve bağımsızlık içinde yürütürlerken, İSG ile ilg...

In the current study, how planning and truck-mixer based waste amounts per 1 m3 fresh ready-mixed concrete (RMC) can be determined was presented. Toward this aim, the formation process of the fresh RMC waste in construction projects was first introduced in a detailed manner, together with an in-depth literature review in this specific domain of the...

Crisis management is a process that includes catching and evaluating crisis signals and needs to take and implement necessary precautions in order to overcome a crisis with a minimal damage. Detecting the early warning signals of a crisis contributes firms to hinder the occurrence of the crisis and to survive without huge financial losses. Other fa...

A general contractor’s ability to select proper subcontractors in foreign projects is a key competitive advantage. Toward this aim, a subcontractor selection model (CoSMo) was developed in this study. As a computational approach, the fuzzy sets method was employed because it can model human judgment by means of linguistic values, combining qualitat...

In the current study, how planning and truck-mixer based waste amounts per 1 m3 fresh ready-mixed concrete (RMC) can be determined was presented. Toward this aim, the formation process of the fresh RMC waste in construction projects was first introduced in a detailed manner, together with an in-depth literature review in this specific domain of the...

Although strategic management is not common among construction firms, it was argued that construction firms develop strategies to maintain in the competitive environment and that they can be categorized according to their strategies, even if they are not managed formally. Because construction firms’ strategies are specific and they are unwilling to...

This paper presents a study that reports a detailed process of ‘quality function deployment’, considering an ultra-luxury villa project. It is based on a questionnaire survey that was applied to 42 residents and seven top managers. The results highlight real expectations of high-income residents. Residents were not satisfied with the ‘sauna’, ‘spor...

The construction industry in developed and developing countries is almost always among industries with poor safety records. In decreasing the numbers of safety incidents, society’s perception of construction workers, who are the central part of the occupational health and safety issue, can be an important learning tool for these workers in terms of...

In today’s competitive construction industry, ready-mixed concrete (RMC) batching plants should produce and operate in a green manner when the related legal regulations on the protection of natural environment and urban life are taken into account. At the end of each working day, both residual and over-ordered fresh concrete in truck-mixers returns...

Construction industry is at the top rankings in developed and developing countries in terms of occupational deaths and injuries. This shows that legal regulations themselves could not decrease occupational accidents. In decreasing such incidents, the perception of the society on workers, who are a part of occupational health and safety issue, has a...

This study reports the general health and safety (HS) conditions in the Turkish construction industry from the perspective of construction labor. Toward this aim, a questionnaire survey was carried out with 800 workers employed in 32 construction projects in Turkey. Contractors were found to neglect their legal liabilities in paying workers' insura...

In construction projects, there are three basic planning elements: time, cost, and quality. These concepts are in a close relationship with each other. Labour productivity is also a key concept of construction planning efforts and has a direct interrelationship with the triple constraint mentioned above. The present study reports an investigation o...

As essential elements of buildings, roofs traditionally correspond to about 3-8% of total project cost. Despite this considerable share, in the literature there have been only a few researches that investigate roof types preferred by owners/designers and make a cost analysis to reveal cost differences between alternatives. Toward this aim, in this...

Purpose This paper aims to reveal the impact of five industry forces (IFs) on implementing input‐based competitive strategies (CSs) and to determine relationship of these CSs on cement plants' environmental performances (EPs). Design/methodology/approach Data were collected from cement manufacturers in Turkey. This study employed structural equati...

In both developing and industrialized countries, deviation from a planned time schedule is one of the most frequently encountered problems in construction investments. Various factors faced with during construction period prevent systematic flow of work, which causes time-based anomalies as a conclusion. Considering the vital importance of the cons...