scholarly journals System Dynamics Modeling Strategy for Civil Construction Projects: The Concept of Successive Legislation Periods

Symmetry ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 677 ◽  
Author(s):  
Wang Jing ◽  
Hafeth Ibrahem Naji ◽  
Raquim Nihad Zehawi ◽  
Zainab Hasan Ali ◽  
Nadhir Al-Ansari ◽  
...  
Keyword(s):  
System Dynamics ◽  
Construction Industry ◽  
Construction Projects ◽  
Project Schedule ◽  
Dynamics Modeling ◽  
Time Performance ◽  
Local Construction ◽  
Modeling Strategy ◽  
The Cost ◽  
The Impact

Cost and time performance are considered to be the most important aspects in the construction industry. The exceptional conditions that took place in Iraq since the beginning of the third millennia had a huge vicious impact on the cost and time performance of local construction projects. This may represent the principal motivation for the local authorities to enact some four successive legislations in order to control the performance of the construction industry. In this research, an evaluation is made to the cost and time performance of local construction projects and their variation due to the multiple changes in the internal factors that affect project performance, and changes in the surrounding events include legislative, economic, and security environment during the period that lasted from 2003 to 2014. Data is collected from 30 governmental projects to conduct the evaluation. A comprehensive questionnaire is performed to estimate a quantitative value for the impact of several factors that concern both the owner and the contractor, with special consideration to their variation through the successive legislation periods. These estimates are, in turn, utilized in a system dynamics model, in which the project development process is simulated. The final cost and duration changes in the project are accumulated in the form of stocks to give an indication of the cost and time performance of the project. The developed model returned a progressive reduction of 10.9% for the change in project cost and 135.37% for the change in project schedule throughout the eleven years period.

scholarly journals Adoptability of Lean Construction Techniques in Pakistan’s Construction Industry

2018 ◽  
Vol 4 (10) ◽  
pp. 2328
Author(s):  
Aftab Hameed Memon ◽  
Muhammad Akram Akhund ◽  
Abdul Nasir Laghari ◽  
Hafiz Usama Imad ◽  
Shadab Noor Bhangwar
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Minimum Cost ◽  
Lean Construction ◽  
Global Trends ◽  
Lean Practices ◽  
Wide Range ◽  
Local Construction ◽  
The Cost ◽  
Tools And Techniques

There is a philosophy in the construction industry to reduce the cost of a project by reducing construction waste and improving productivity. With lower expenses, lean construction emphasizes the cost of the project at a minimum cost. Globally, the philosophy has gained a wide range of popularity in the construction sector. The Lean Construction has helped practitioners with several tools and techniques to implement at different stages of a construction project. Following global trends, this study has investigated lean practices in Pakistan. With the potential advantages experienced by its implementation in Pakistan's construction projects and the level of implementation of various types of tools and techniques has been analyzed. To achieve the goal, the study had tried to capture construction projects in which four shareholders are being represented, which are clients, consultants, contractors and material suppliers. Overall 34 completed questionnaires were collected and then analyzed. The results of the analysis have indicated that pull approach, standard of work, time consuming, visualization tools, the integrated project delivery methods and the quality failure in safe limits are common lean techniques which are being implemented to the local construction industry. While there are major benefits of waste reduction, client satisfaction, better communication, visual control and proper task management to build appropriate work are the key benefits of lean construction.

scholarly journals Analysis of Improvement of BIM-Based Digitalization in Engineering, Procurement, and Construction (EPC) Projects in China

2021 ◽  
Vol 11 (24) ◽  
pp. 11895
Author(s):  
Yu Zheng ◽  
Llewellyn C. M. Tang ◽  
K. W. Chau
Keyword(s):  
Construction Projects ◽  
Rapid Development ◽  
Dynamic Change ◽  
Laboratory Data ◽  
Information Modeling ◽  
Time Performance ◽  
Building Information ◽  
Questionnaire Surveys ◽  
The Cost ◽  
The Impact

Digitalization is considered a dynamic change process powered by the rapid development of innovative concepts (e.g., building information modeling) that brings substantial potential benefits to the construction industry. However, previous studies of the benefits of digitalization (BIM) were mainly based on laboratory data rather than actual practices, which compromised the reliability of the results for construction practitioners. This study investigated the impact of digitalization in EPC construction projects by integrating descriptive statistics and survey-based exploratory factor analysis (SEFA). After a detailed review of related studies and meetings with experts, ten main variables and 14 unified variables were identified. The data on these variables were collected by questionnaire surveys and the extraction of information from project documentation. A total of 62 participants from 33 EPC construction projects responded to the questionnaire survey. The SEFA results indicated that digitalization can improve both the cost and time performance, with greater potential for improvement in time performance for EPC projects. In a scenario with limited digitalization implementation, this research could motivate future researchers to develop more applied research and guidelines to achieve best practices in the domain of the digitalization of construction projects.

scholarly journals Training Program in the Construction projects

2020 ◽  
Vol 9 (5) ◽  
pp. 515-522
Keyword(s):  
Training Program ◽  
Construction Industry ◽  
Construction Projects ◽  
System Dynamic ◽  
Cost Overruns ◽  
Efficient Performance ◽  
Comprehensive Development ◽  
Unskilled Workers ◽  
The Cost ◽  
The Impact

Construction is questionably a main part in relative to comprehensive development . It plays an important part in the role in the economy as and in people’s survives over influencing and preserving the environment of the city-region’s constructed, and it is a rising sector. To provide an efficient performance and more development of the economic, there is emphases on optimizing the employees contribution to the goals and areas of the governments. The training significance as a management central part has long been documented by principal writers.This paper aim to find the impact of training in the construction industry and how the training is been underestimate lead in increase the cost by using the simulation technique system dynamic. The research methodology include designing of questionnaire that consist of three items , the first item include , general Training (Training Program), evaluation of on-the-job training and evaluation of training after establishing work and the second part include building the model using system dynamic to show the effect of training on the cost of construction. the results the authors made the following conclusions .The absence of training program has very strong effect as the absence of such program is caused by the finance absence , this is common problem with Iraqi construction industry. The most environment of the Iraqi industry is the absence of the finance from both owner and contractor as they ignore this part and consider unnecessary expenses and this will lead to unqualified engineering or worker in the wrong job .The absence of management mean that , usually the contractor and his staff are working without the supervise or represented from the owner side , which some time mean unskilled workers may be hired which lead to delay of the work and cost overruns .

scholarly journals Cost overrun in construction projects in Oman: Case study

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Haitham Nasser Al Siyabi ◽  
Omar Khaleel
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Poor Quality ◽  
Building Construction ◽  
Cost Overrun ◽  
Survey Interviews ◽  
Original Contract ◽  
Major Factors ◽  
The Cost ◽  
The Impact

There are many challenges in construction industry sector, and one of the most important and critical is completion of the project within the original contract value. As the issue of cost overrun in construction projects is spread worldwide generally and commonly encountered in the Sultanate of Oman.The main objectives of this study are to identify and determine vital factors leading to cost overrun in Building Projects in Oman, evaluate the impact of cost overrun in building construction projects and develop the best protocol strategy for project management teams that can be adopted in order to control the cost overrun in future projects. These objectives have been obtained through several methods, questionnaire survey,interviews with experts in construction industry. Twenty nine major factors lead to cost overrun were identified through literature review and studied in Sultanate of Oman.The study concluded that there are three major impacts of cost overrun in construction projects and industry which are time of completion, delivery of poor quality projects and delay of payment approval. Additional to that, Hire good Supervision Team, a good Cost Controller, Project Manager, a good project design team, well planning for pre-contract stage and proper procurement strategy. Consider the Risk assessment and Risk Control are crucial to minimize the cost overrun in building construction project in Oman. The study have recommended procedure to cost control in future project such as the Employer should have a proper tender analysis of the Contractor’s bid, Detailed design should be finalized before award of work and others.

scholarly journals Analysis Of The Impact Of The Covid-19 Pandemic On The Construction Industry Sector

Neutron ◽  
2022 ◽  
Vol 21 (2) ◽  
pp. 52-59
Author(s):  
Liliana Hannes ◽  
Julistyana Tistogondo
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Construction Project ◽  
Construction Materials ◽  
Industry Sector ◽  
Independent Variable ◽  
The Cost ◽  
The Impact ◽  
Cost Aspect

Accelerating infrastructure development in Indonesia is a good thing, but this is not without problems. The COVID-19 pandemic is a problem that has a large and global impact, not least in Indonesia, especially in the construction industry sector. The construction project of the Soedono Madiun Hospital is one of the construction projects that have experienced the direct impact of the COVID-19 pandemic. Therefore, the purpose of this study is to review and analyze the impact of the covid-19 pandemic on construction projects in the case study of the construction project of the Soedono Madiun Hospital, and to find out the biggest impact of the covid-19 pandemic which has the most influence on construction projects in the case study of the construction project of the Soedono Hospital. Madison. The research method used to determine the biggest impact of the covid-19 pandemic on the cost and time aspects is the multiple linear regression analysis method with the help of Microsoft Excel. The other data analysis methods used in this study were the validity and reliability tests used in testing the questionnaire. The results of data analysis conducted in this study indicate that there are seven independent variables affect the dependent variable, namely the suitability of planning and project realization with the equation y= 94.186-0.376x1-0.108x2-1.014x3+0.873x4 for the time aspect, and the equation y=87,009 -0.0006x5-0.001x6-0.0002x7 for the cost aspect. With this equation, it can be seen that the independent variable that has the most influence on the dependent variable on the time aspect is the independent variable X3, namely the change in the time schedule due to delays in the arrival of construction materials by 1.014, while in the cost aspect is the independent variable X6, namely changes in costs due to instability. the price of construction materials is 0.001. So, it is hoped that there will be a project management handling that focuses on the most influential variable, namely construction materials.

The Impact of Terrorism on Construction Industry in Iraq

2015 ◽  
Vol 3 (2) ◽  
pp. 69-84
Author(s):  
Wadhah Amer Hatem ◽  
Samiaah M. Hassen Al-Tmeemy
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Historical Data ◽  
Terrorist Attacks ◽  
Construction Sector ◽  
Statistical Procedures ◽  
Qualitative Approaches ◽  
Suicide Attacks ◽  
The Face ◽  
The Impact

     Suicide attacks, bombings, explosions became the part of daily life in Iraq. Consequently, the threat of terrorism put the Iraqi construction sector in the face of unique and unusual challenges that not seen on other countries. These challenges can have extensive impact on construction projects. This paper seeks to examine the impact of the terrorist attacks on construction industry and determine the extent to which the impact of terrorism on construction projects in terms of cost, schedule, and quality. This study adapted quantitative and qualitative approaches to collect data using questionnaire survey and interviews, as well as historical data. The study focused on projects that have been the target of terrorist strikes in Diyala governorate. A variety of statistical procedures were employed in data analysis. The results revealed the extent to which terrorist attacks impact construction projects in terms of cost, time, and quality. The results of this study will enhance the awareness of all construction parties to the impact of the terrorist attacks against construction projects. Eventually, this can develop a risk management assessment and assist contractors to properly protect projects and buildings to minimize injuries and fatalities in the event of terrorism.

ECONOMIC SUBSTANTIATION OF TRANSITION TO PERSONNEL OUTSOURCING IN THE ORGANIZATIONS OF THE CONSTRUCTION INDUSTRY

2020 ◽  
pp. 70-79
Author(s):  
V.V. Verna
Keyword(s):  
Cost Effectiveness ◽  
Construction Industry ◽  
Methodological Approaches ◽  
Construction Organization ◽  
The Cost ◽  
The Impact

The article provides a rationale for methodological approaches to assessing the effectiveness of outsourcing in organizations of the construction industry using the example of outsourcing schemes to perform personnel functions. The conditional example shows the impact of the use of outsourcing on reducing the costs of a construction organization. The main prerequisites for the use of outsourcing in the activities of enterprises in the construction industry are identified, methodological approaches to assessing the cost-effectiveness of personnel outsourcing in the construction industry enterprises are substantiated.

scholarly journals Method of Assessing the Risk of Implementing Railway Investments in Terms of the Cost of Their Implementation

2021 ◽  
Vol 13 (23) ◽  
pp. 13085
Author(s):  
Jan Kowalski ◽  
Mieczysław Połoński ◽  
Marzena Lendo-Siwicka ◽  
Roman Trach ◽  
Grzegorz Wrzesiński
Keyword(s):  
Construction Projects ◽  
Original Method ◽  
Project Managers ◽  
Simple Method ◽  
Construction Companies ◽  
Risk Forecasting ◽  
Specific Object ◽  
Effective Cost ◽  
The Cost ◽  
The Impact

Exceeding the approved budget is often an integral part of the implementation of construction projects, especially those where unforeseen threats may occur. Therefore, each construction investment should contain elements of risk forecasting, mainly in terms of the cost of its implementation. Only a small number of institutions apply effective cost control methods, taking into account the specifics of a given industry. Especially small construction companies that participate in the structure of the implementation of large construction projects as subcontractors. The article presents a method by which it is possible to determine, with certain probability, the final cost of railway construction investments carried out in Poland. The method was based on a reliable database of risk factors published in sources. In this article, the main presumptions of the original method are presented, which take into account the impact of potential, previously recognized, risks specific to railway investments, and enable project managers to relate them to the conditions where the implementation of a specific object is planned. The authors assumed that such a relatively simple method, supported by a suitable computational program, would encourage teams that plan to implement railway projects to use it and increase the credibility of their schedules.

scholarly journals ANALISIS KETERLAMBATAN PROYEK SERTA DAMPAKNYA TERHADAP BIAYA DAN WAKTU PELAKSANAAN PROYEK

2019 ◽  
Vol 5 (1) ◽  
pp. 13-19
Author(s):  
Fitri Nur Kharina ◽  
Kusno Adi Sambowo
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Project Performance ◽  
Project Work ◽  
Earned Value ◽  
Time Period ◽  
Review Period ◽  
The Difference ◽  
The Cost ◽  
The Impact

Construction projects in all regions continues to be developed for the creation of facilities that can be utilized by the community. One of them is the construction of apartments which are now being intensively carried out to meet residential needs for the community. Making a construction project plan always refers to estimates that exist at the time development plan is made, therefore problems can arise if there is a discrepancy between the plans that have been made and the actual reality. So the impact that often occurs is the delay in the time of project implementation which can also be accompanied by an increase in the cost of implementing the project. In the construction project of Cinere Terrace Suites Apartemen & Citywalk, Jakarta there was a delay resulting in a late payment of monthly bill progress by the owner. Based on the above reasons, this research was conducted to find out how the project performance was seen from the cost and time period of the review period. how is the estimated cost and time to complete the overall project work. The method used in the analysis of this study is the Earned Value Method. Based on the results of the analysis carried out for 29 weeks the project performance on schedule has been delayed and cost shows a positive value. For the estimated completion time of the project there is an increase in time whose duration increases from the planned 98 weeks or 685 days to 109,624 weeks or 768 days. While the estimated cost of completing the project from the results of the analysis obtained a value of Rp. 270,147,448,569.16 smaller than the planned cost of Rp. 315,272,727,272.73. With the difference VAC of Rp. 45,125,278,703.57 this shows that there are benefits obtained by the contractor.

FACTORS CAUSING PROBLEMS IN MANAGING CONSTRUCTION PROJECTS IN A COUNTRY UNDER MILITARY OCCUPATION: Contractors’ Perspective

2016 ◽  
Vol 05 (07) ◽  
pp. 01-07
Author(s):  
Akram Subhe Suleiman ◽  
Jafar Subhi Hardan Abahre
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Project Managers ◽  
Project Manager ◽  
Military Occupation ◽  
The Political ◽  
Clear Understanding ◽  
Team Members ◽  
Political Situation ◽  
The Impact

An exhaustive literature search revealed that not much research has been done on factors causing problems in managing a construction project in a country under military occupation like Palestine. So, it is the main goal of this research is to identify these factors which could be used by the decision makers to select the appropriate project manager who bosses the suitable skills and competencies to deal with these problems. The study is a step toward determining means to improve the effectiveness of projects through identifying project manager competencies. It is important for Palestinian construction industry to progress in terms of project success; the problems that face the project managers must be determined and identified, in order to achieve the best results with less risk. A clear understanding of such problems helps the Palestinian construction industry of finding the suitable solutions to overcome these problems. A questionnaire survey was carried out to achieve the main aim of this research. The respondents were engineers have more than 3 years in the position of project manager in the Palestinian construction industry. The survey was based on factors drawn from findings of another researches in different countries, together with special factors identified as potentially affecting Palestine. The results identified many factors created problems; they were clustered in eight groups. These groups were arranged according to respondents in descending order as follows: the political situation of Palestine, lack of consultants` technical competencies, lack of resources, insufficient planning, team members uncommitted, conflicts between departments, breakdowns in communications, and changes in goals. As a result of this study one could conclude that managing a project in Palestine is as difficult as the complication of the political situation of the country. The project manager should have a complicated mixture of skills and competencies from dealing with Israeli occupation to dealing with stakeholders to lack of resources and unclear goals. The study has recommended to the Palestinian government to improve the regulations and laws to meet the impact of closure and segmentation of the Palestine.

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