scholarly journals Formation of integrated structural units using the systematic and integrated method when implementing high-rise construction projects

2018 ◽  
Vol 33 ◽  
pp. 03075 ◽  
Author(s):  
Ivan Abramov
Keyword(s):  
Construction Projects ◽  
Structural Unit ◽  
System Analysis ◽  
Research Priorities ◽  
Structural Units ◽  
Factors Affecting ◽  
Reliability Criterion ◽  
Integrated Method ◽  
Destabilizing Factors ◽  
The Impact

Development of design documentation for a future construction project gives rise to a number of issues with the main one being selection of manpower for structural units of the project’s overall implementation system. Well planned and competently staffed integrated structural construction units will help achieve a high level of reliability and labor productivity and avoid negative (extraordinary) situations during the construction period eventually ensuring improved project performance. Research priorities include the development of theoretical recommendations for enhancing reliability of a structural unit staffed as an integrated construction crew. The author focuses on identification of destabilizing factors affecting formation of an integrated construction crew; assessment of these destabilizing factors; based on the developed mathematical model, highlighting the impact of these factors on the integration criterion with subsequent identification of an efficiency and reliability criterion for the structural unit in general. The purpose of this article is to develop theoretical recommendations and scientific and methodological provisions of an organizational and technological nature in order to identify a reliability criterion for a structural unit based on manpower integration and productivity criteria. With this purpose in mind, complex scientific tasks have been defined requiring special research, development of corresponding provisions and recommendations based on the system analysis findings presented herein.

scholarly journals Formation of production structural units within a construction company using the systemic integrated method when implementing high-rise development projects

2018 ◽  
Vol 33 ◽  
pp. 03066 ◽  
Author(s):  
Azary Lapidus ◽  
Ivan Abramov
Keyword(s):  
Construction Projects ◽  
Development Projects ◽  
Key Factors ◽  
Structural Units ◽  
Factors Affecting ◽  
Construction Company ◽  
Integrated Method ◽  
High Rise ◽  
Vital Element ◽  
Modelling Approach

Development of efficient algorithms for designing future operations is a vital element in construction business. This paper studies various aspects of a methodology required to determine the integration index for construction crews performing various process-related jobs. The main objective of the study outlined in this paper is to define the notion of integration in respect to a construction crew that performs complete cycles of construction and assembly works in order to find the optimal organizational solutions, using the integrated crew algorithm built specifically for that purpose. As seen in the sequence of algorithm elements, it was designed to focus on the key factors affecting the level of integration of a construction crew depending on the value of each of those elements. The multifactor modelling approach is used to assess the KPI of integrated construction crews involved in large-sale high-rise construction projects. The purpose of this study is to develop a theoretical recommendation and a scientific methodological provision of organizational and technological nature to ensure qualitative formation of integrated construction crews to increase their productivity during integrated implementation of multi-task construction phases. The key difference of the proposed solution from the already existing ones is that it requires identification of the degree of impact of each factor, including the change in the qualification level, on the integration index of each separate element in the organizational and technological system in construction (integrated construction crew).

A dynamic Modelling of Labor Productivity Impacts Arising from Change Orders in Road Projects

2021 ◽  
Author(s):  
Zain Ghazi Al-Kofahi ◽  
Amirsaman Mahdavian ◽  
Amr Oloufa
Keyword(s):  
Labor Productivity ◽  
Construction Projects ◽  
Productivity Loss ◽  
Dynamic Modelling ◽  
Change Orders ◽  
Factors Affecting ◽  
Road Projects ◽  
Change Order ◽  
The Impact ◽  
Sd Model

It is vital to investigate the system dynamics (SD) between the change orders and labor productivity to identify the causes of the productivity loss of the construction projects. Most productivity loss studies were financed from the contractor’s part and rely on the contractor’s data. This research highlighted the problem of productivity loss resulting from issuance of a change order by utilizing a previously developed SD model. It conducted a sensitivity analysis to evaluate the impact of overtime, overmanning, temperature and learning on the behavior of the SD model quantifying change orders' impact on labor productivity. Based on the results, SD provides more reliable results comparing with the measured mile analysis (MMA) approach for the compensation request, considering the leading factors affecting the productivity loss other than the change order. The model developed in this study can accept or reject the responsibility of a change order for occurrence of productivity loss.

scholarly journals Effects of Design Quality on Delay in Residential Construction Projects

2021 ◽  
Vol 28 (1) ◽  
pp. 118-129
Author(s):  
Ibrahim Mahamid
Keyword(s):  
Construction Projects ◽  
Design Quality ◽  
Frequent Change ◽  
Building Projects ◽  
Factors Affecting ◽  
Schedule Delay ◽  
Major Factors ◽  
Design Schedule ◽  
The Impact ◽  
Project Delay

This study is conducted to establish the effect of design quality on project delay in building projects. It aims at: 1) investigating the major factors of design quality, 2) identifying the main delay factors in building projects, 2) establishing the relationship between design quality and delay in building projects. To achieve these objectives, a questionnaire survey is performed. Seventeen (17) factors that might affect design quality, and 15 delay factors are listed in a questionnaire form. Sixty (60) contractors and 40 consultants are asked to identify the severity of the identified factors. Results indicate that the top factors affecting design quality are: delay in payments by client for design services, staff allocation for many projects at the same time, copying and modifying from previous work to minimize time and cost, tight design schedule, lack of designer knowledge with techniques and materials available in the market. The study also concludes that the top five delay factors include: payments delay, poor labor productivity, lack of skilled manpower, frequent change orders and rework. Regression analysis for data collected from 36 building projects shows a good correlation between design quality and delay in projects. This study is the first one that addresses the problem of design quality in the West Bank in Palestine. Furthermore, it is the first study that addresses the effect of design quality on project delay in Palestine and the neighboring countries. It is hoped to be helpful for researchers and professionals to understand the impact of design quality on schedule delay.

scholarly journals Assessment of Human Productivity Drivers for Construction Labor through Importance Rating and Risk Mapping

2020 ◽  
Vol 12 (20) ◽  
pp. 8614
Author(s):  
Murat Gunduz ◽  
Abdulrahman Abu-Hijleh
Keyword(s):  
Labor Productivity ◽  
Construction Projects ◽  
Rank Correlation ◽  
Weather Conditions ◽  
Risk Mapping ◽  
Importance Rating ◽  
Factors Affecting ◽  
Importance Index ◽  
The Impact ◽  
Productivity Factors

Labor constitutes a significant portion of the overall cost of a construction project, where labor productivity is often the main driver of the cost. Although studies on labor productivity factors exist, their frequency of occurrence in terms of their ranking remains unexplored. This study differs from other studies in the literature by introducing the frequency component to the productivity factors, a more realistic ranking of the factors by adjusting the importance by frequency (frequency adjusted importance index) and risk mapping of the factors. Moreover, this study is the first to apply risk mapping on labor productivity drivers. The aim of this paper is to identify the project factors affecting the labor productivity in construction projects and to rank these factors considering the perception of the industry on project performance. A literature review of past relevant studies was performed to identify and draft a list of factors affecting labor productivity in construction projects. Thirty-seven labor productivity factors were presented in a questionnaire to investigate the impact and frequency of their occurrence in construction projects. A 9-point scale structured questionnaire was constructed to measure the importance and the frequency of the factors and to evaluate the ranking for different categories. The frequency adjusted importance index (FAII), Spearman’s rank correlation, and risk mapping were used to study and analyze the 105 completed responses. The participants rated the following factors as the five most significant labor productivity-influencing factors: (1) poor labor supervision, (2) delays in payments, (3) poor work environment, (4) lowly skilled labor, and (5) bad weather conditions.

Interrelationships of factors causing delays in the relocation of utilities

2016 ◽  
Vol 23 (3) ◽  
pp. 349-368 ◽  
Author(s):  
Aneetha Vilventhan ◽  
Satyanarayana N. Kalidindi
Keyword(s):  
Construction Projects ◽  
Cognitive Mapping ◽  
Organizational Factors ◽  
Mapping Technique ◽  
Critical Factors ◽  
Content Type ◽  
Factors Affecting ◽  
Lack Of Information ◽  
Underground Utilities ◽  
The Impact

Purpose – Relocation of utilities is a major source of delay in Indian infrastructure projects. This delay is particularly critical in road and bridge construction projects. The purpose of this paper is to identify the various factors and also the interrelationships between the factors which influence the delays in the relocation of utilities. Design/methodology/approach – Case studies were conducted on 11 road and bridge projects in India with varying levels of complexity and size. Factors causing relocation delays were identified using computer aided qualitative analysis methodology. Cognitive mapping technique was used to map the interrelationships between the factors and to identify the critical delay factors. Findings – Factors affecting delays were identified across two groups, namely, technical and organizational factors. The study offers insights into the kinds of interactions of factors that can lead to delays in a project. The critical factors causing delays were identified as slow response from utility agencies, difficulty in identification of underground utilities, lack of information on underground utilities and conflict between agencies. Research limitations/implications – The limitations of the study are that the interview respondents are not evenly distributed among the type of organizations which may have induced some bias in responses. The impact of the utility relocation delays on the overall project delay has to be detailed further. Practical implications – The interrelationships between factors has the potential to help the officials of highway department, contractors, utility agencies and others understand how various interactions/linkages of factors contributes to delays in utility relocations. Recommendations are provided for the practical use and to reduce the impact of delays. Originality/value – Utility relocation has received very little attention in the extant literature and this paper seeks to contribute to knowledge in this area by identifying the linkages between factors and the critical factors of utility relocation delays in India.

scholarly journals Factors in Innovative Development of a Region

REGIONOLOGY ◽  
2019 ◽  
Vol 27 (4) ◽  
pp. 661-677
Author(s):  
Irina B. Yulenkova
Keyword(s):  
Economic Growth ◽  
Economic Development ◽  
System Analysis ◽  
Necessary Conditions ◽  
Innovative Development ◽  
Regional Innovation ◽  
Factors Affecting ◽  
Comparison Results ◽  
Socio Economic Development ◽  
The Impact

Introduction. Innovation is one of the necessary conditions for economic growth and development of society. Depending on the level of processes of innovation, directions and pace of development of regions are determined in terms of qualitative transformations and the increase in basic economic indicators. The necessary conditions for innovative development and sustainable economic growth in a region include identification of factors affecting innovative activities. In this regard, the study of innovative development of regions is of particular importance and relevance. The purpose of this research is to substantiate the systematic approach to the classification of factors in innovative development of regions in the context of their influence on sustainable socio-economic development of territories. Materials and Methods. The object of this research was innovative development of a region exemplified by the case of the Republic of Mordovia. Regional statistics was used as the information base for the research. The study employed the methods of factor and system analysis, expert survey, planning, forecasting and comparison. Results. The features of the innovative development of a region have been determined. The factors affecting the innovative development of a region have been classified. According to the author, using the indicated factors makes it possible to develop a strategy for the growth of innovative activities in a region. The factors have been analyzed and it has been proved that they affect the level of regional innovation processes. Discussion and Conclusion. Determination of the institutional conditions and the impact of internal and external factors, identifying the optimal level of correlation of maximum income and minimum costs will lead to the expansion of innovative activities of enterprises in a region, which will ensure the innovative and socio-economic development of the region. The results obtained serve as the basis for assessing the attractiveness of a region in terms of investment and provide a forecast for the impact of innovation on the regional growth. The results of this research have practical relevance and can be used in the practice of stimulating innovative activities in regions.

DEMOTIVATING FACTORS FOR ARCHITECTS IN THE CONSTRUCTION INDUSTRY

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Gülden Gümüşburun Ayalp ◽  
Fatma Arslan
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Vital Role ◽  
Point Of View ◽  
Design Management ◽  
Factors Affecting ◽  
Active Involvement ◽  
Effective Performance ◽  
Design Firms ◽  
The Impact

Motivation is one of the factors that influence the productivity of people. Architects play a vital role in the management of projects in the construction industry. The success of construction projects relies heavily on their active involvement and effective performance. Hence it is important to assess the impact of motivation on the performance these architects. On the other hand, architects are frequently confronted with problems that could lead them to demotivation. Demotivation is caused not simply by a lack of motivators but the existence of certain situations that cause dissatisfaction and discourage individuals from pursuing desired goals and aims. From this point of view, the present study conducted with the aim of identifying factors affecting demotivation of Turkish architects. After a review of extant literatures in construction management, and design management 69 demotivating criteria was produced and used in questionnaire survey, and data were collected from architects who are working at construction industry, especially at design firms. The questionnaires were administered to architects via e-mail, and 71 participants responded to the survey. Utilizing the particular statistical analyzes, the factors were identified for detailed analysis and discussion. From the findings of the present study, ten underlying demotivating factors have been identified for architects in Turkish construction industry. This study would help managers of design firms to develop healthy workforce through eradication of the identified demotivating factors using some of suggested solutions.

scholarly journals ASSESSMENT OF LABOUR PRODUCTIVITY IN ROAD CONSTRUCTION PROJECTS OF PAKISTAN

2021 ◽  
Vol 12 (1) ◽  
pp. 32-38
Author(s):  
Wesam Salah Alaloul ◽  
Muhammad Ali Musarat ◽  
Hussain Mehmood ◽  
Muhammad Altaf
Keyword(s):  
Construction Projects ◽  
Labour Productivity ◽  
Road Construction ◽  
Factors Affecting ◽  
Financial Difficulties ◽  
Importance Index ◽  
One Belt One Road ◽  
Critical Issues ◽  
The Impact ◽  
Made In

Road construction in Pakistan is booming because of China’s One Belt One Road program. Pakistan is in a developing stage and facing a lot of challenges in construction projects, primarily in labour productivity. This research focuses on the factors affecting labour productivity in road construction projects of Pakistan. A questionnaire was developed to observe the impact of critical factors on labour productivity. Based on the gathered responses, the factors were ranked using the Relative Importance Index (RII). The analysis shows that out of thirty (30) factors, the most important five (5) factors that affect labour productivity on road construction are unskilled workforce, payment delays to labour, tools and equipment shortages, poor communication of supervisor with labours and financial difficulties of owner/contractor. By focusing on these critical issues’ betterment can be made in labour productivity which will directly enhance the projects’ performance.

scholarly journals Assessment of the factors affecting slope stability in the southern part of the Sofia Kettle

2021 ◽  
Vol 50 (3) ◽  
pp. 55-63
Author(s):  
Miroslav Krastanov ◽  
Boyko Berov
Keyword(s):  
Slope Stability ◽  
Anthropogenic Impact ◽  
Anthropogenic Impacts ◽  
Assessment Model ◽  
Factors Affecting ◽  
Destabilizing Factors ◽  
Landslide Processes ◽  
The Stability ◽  
Seismic Impact ◽  
The Impact

A specific sample area was selected, where an assessment model was made for the stability of a slope subjected to anthropogenic impacts. A hillside slope zone from the foot of the Vitosha and Lozen mountains in the southern periphery of the Sofia Kettle was chosen as an exemplary area for a part of the hazards arising in the Trans-Balkan valleys. The anthropogenic impact on their slope stability was studied on three particular slopes. The study area is about 1.25 km2 and has a maximum distance of up to 3.80 km between the slopes. Landslide processes resulting from anthropogenic impact often occur on the territory of the Sofia Valley. The rise of construction, the development of hard-to-reach terrains with steep slopes, their undercutting, the seismic impact and the low values of the strength-deformation parameters of the geological varieties building up the respective terrains contribute to their occurrence. The deforestation, the loads with heavy embankments, the hydration and the inhomogeneity of the layers of the earth base have a strong destabilizing effect. The paper presents the results of field and laboratory tests and analyses of slope stability by the method of Fellenius. The severity of the impact of the various destabilizing factors was assessed.

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