scholarly journals Model for construction project delay occurrence (PDO)

2021 ◽  
Vol 9 (3B) ◽  
Author(s):  
Ehab Soliman ◽  
◽  
Khaled Alrasheed ◽  
Keyword(s):  
Resource Availability ◽  
Construction Projects ◽  
Construction Project ◽  
Research Work ◽  
Study Results ◽  
Project Construction ◽  
Project Life ◽  
Resource Shortage ◽  
Correlation Factors ◽  
Project Delay

Extensive research work was conducted in relation with evaluating and ranking delay causes in construction projects, but limited research was performed to discuss the delay issue in theory. This paper discusses the theoretical basis for how delay occurs and propagates during project construction. A set of suggested assumptions were proposed to build a theoretical model for delay occurrence. These assumptions were driven from the analysis of construction project environment, and the concept of project implementation. The construction delay occurrence (PDO) model assumes that some of the root delay causes can convert by themselves and/or other triggers toward direct delay causes. Contractor management deficiency, project contract and procurement strategy, and contractor financial problems are examples of the root delay causes, which have significant influence on project delay and resource availability. The model assumes that construction resources unavailability is the underpinning driver for project delay. Graphical presentation of the PDO model is used to illustrate how delay is generated, propagated during the project life, and converted to be a real and physical delay. Interview questionnaires were used to verify the model bases. This is followed by statistical analysis to ascertain the model assumptions and Delphi technique to confirm questionnaire results. The correlation factors for the two rounds of questionnaires showed that there is a great enhancement for respondents’ answers regarding the effect of resource shortage on root delay causes. The study shows that the proposed set of root delay causes and their effect on project delay and their influence on resource availability were statistically accepted. The study results can be used as a basis for assessing root delay causes and predicting the prone of a project to delay before it starts.

scholarly journals Kajian Kompleksitas Proyek Konstruksi : Tinjauan Kegiatan Pengadaan Pekerjaan Konstruksi di Indonesia

2018 ◽  
Vol 13 (1) ◽  
pp. 35-45
Author(s):  
Cut Zukhrina Oktaviani
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Government Procurement ◽  
External Factors ◽  
Construction Work ◽  
Project Construction ◽  
Internal And External Factors ◽  
And Control

This paper aims to reviewed construction projects complexity in construction complex procurement. Construction complexity is influenced with many internal and external factors. Complexity covers entire construction project cycles. At construction work procurement stage, organization and processes complexity is a major concern, especially in government procurement. Complexity requires regulation and control are such that it does not happen obstacles at every project construction cycle stage. 

scholarly journals The Importance of Communication Management Improving the Performance of Construction Project Managers in Developing Countries

2021 ◽  
Vol 56 (3) ◽  
pp. 473-484
Author(s):  
Zulkifli Lubis
Keyword(s):  
Developing Countries ◽  
Public Relations ◽  
Construction Projects ◽  
Construction Project ◽  
Project Managers ◽  
Infrastructure Development ◽  
Communication Management ◽  
The Public ◽  
Study Results

The biggest threat that results in the project not being successful is failure to build a stakeholder project. Based on research on construction projects in developing countries, the lack of communication among workers due to cultural uniformity and the uniqueness of their respective regions can become work constraints that can affect implementation performance and productivity, namely, there is a 69.61% decrease in time performance. The main objective of this research is to analyze the role of communication management in improving the performance of construction project managers in developing countries, particularly the role of construction managers in implementing a construction project. This research uses a qualitative approach and a case study method. Sampling using purposive sampling. Forum Group Discussion to see how the opinions of construction project managers in Indonesia view the importance of communication management in the success of construction projects. The study results explain that the need for Public Relations Infrastructure management plays a role in ensuring various policies and communication to the public. This is a reflection of the effective function of public relations in the implementation of infrastructure development. In carrying out the construction, the construction project manager must pay attention to communication dynamics to support the success of infrastructure development projects. Contractors and other parties involved in infrastructure development must raise awareness of the essence of effective communication in fostering trust in the public concerned with infrastructure development.

Optimization for Limited Resource Schedule in Public Construction Project

2013 ◽  
Vol 457-458 ◽  
pp. 1639-1643
Author(s):  
Han Wen Li ◽  
Fu Zhou Luo
Keyword(s):  
Ant Colony Optimization ◽  
Construction Projects ◽  
Optimization Problem ◽  
Construction Project ◽  
Limited Resource ◽  
Ant Colony ◽  
Project Construction ◽  
Resource Condition ◽  
Universal Applicability ◽  
Public Construction

The optimization of scheduling is an important aspect of the construction project plan, the paper proposes applying improved ant colony optimization to solve the public construction projects scheduling optimization problem under limited resource condition and constructs the mathematical model of the project construction schedule optimization. Further verify the validity of the model and the improved ant colony optimization on the schedule of the optimization problem solving has universal applicability.

Selecting an appropriate alternative for a major infrastructure project with regard to value engineering approach

2017 ◽  
Vol 15 (03) ◽  
pp. 395-416 ◽  
Author(s):  
Ehsan Mousakhani ◽  
Mohammadreza Yavarkhani ◽  
Soheyla Sohrabi
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Road Construction ◽  
Team Work ◽  
Value Engineering ◽  
Engineering Process ◽  
Content Type ◽  
A Value ◽  
Study Results ◽  
Practical Model

Purpose Road construction projects are one of the strategic industries in each country and their construction and development requires spending huge funds. Regarding the increased demand and resource constraints; a technique which reduces costs by maintaining and improving the functioning is of great importance for the authorities of each country. Value engineering is a comprehensive and coherent means based on innovation and team work which, in addition to maintaining the quality and improving the project function, reduces its cost and is not limited to the design and construction phase; however, it includes exploitation and maintenance as well. This study aims to present a practical model for the implementation and application of value engineering process in a construction project located in a special region (in terms of tourism, positioning in an economic growth path, and the East-West strategic axis of the region). In this regard, after reviewing the advisor's design, considering the interests of the project stakeholders, reviewing design criteria and assessment methods and with the use of value engineering techniques, a new option was presented which led to a significant reduction in costs and time and an increase of quality, safety, and environmental factors. Finally, including initial costs, repair, maintenance, income and expenses, the relative value index of this option, compared to the advisor's option, increased from 0.9 to 3.5. Based on the increased need for development of roads in the country, exploiting this model in similar projects can significantly improve the project value and the effectiveness of investments. Design/methodology/approach This research project was selected with regard to the extremely high credit of the project and its potential in terms of Value Engineering implementation. In this study, technical and financial information were first collected after forming a value engineering team including a value engineering expert who was responsible for coordinating the work, some representatives of the employer, designer, executor, and budget estimator. In functional analysis phase with the use of FAST graph, advantageous, costly, and risky functions were identified. In the creativity phase, ideas related to selected functions were created and investigated and developed in the evaluation phase. Finally, calculating the value index, two variants with higher value index than the baseline plan, were proposed and implemented. Findings Since the determining criteria of designing and implementation of road construction projects including increased safety, reduced travel time, user satisfaction, ease of implementation, cost of construction and maintenance and so on are almost similar in most projects, using this study results and implementing its practical framework in other construction projects can be beneficial. These parameters lead to an increase in quality, value, and safety of the project. With regard to done steps and resulted incomes, this essay can be known as a practical and theoretical model to promote the value of crucial projects especially in developing countries. Research limitations/implications Sanandaj-Hamedan road with the length 176km connects central provinces of Iran. This study is regarding the first part of this route. Based on the specific topography of the region and the existing road limitations, selecting a good variance with all the features of an ideal road from geometric, economic, and safety aspects is a difficult task. Originality/value Employers and project sponsors are always looking for products with greater value and lower cost; therefore, present a practical model for the implementation and application of value engineering process in a construction project and providing a similar work experience can encourage the use of value engineering techniques and significantly improve the project value and the effectiveness of investments.

scholarly journals Identifying client project manager competency in Indonesian construction project

2019 ◽  
Vol 276 ◽  
pp. 02007
Author(s):  
Kartika Puspa Negara ◽  
Fiona Lamari ◽  
Connie Susilawati ◽  
Bambang Trigunarsyah
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Project Managers ◽  
Project Manager ◽  
Importance Index ◽  
Client Involvement ◽  
Project Construction ◽  
Public Construction ◽  
Client Side ◽  
Active Client

The influence of active client involvement towards project construction success is gaining recognition in the last few decades. The growing concern on the client involvement has drifted the perception towards client away from the passive role into contributor of project success. During client involvement in the construction project, a representative from client or client project manager (CPM) should be complemented with certain competencies in order to succeed in commissioning construction projects. Evidence shows that some public construction projects in Indonesia failed due to the lack of competency of client project managers. Whilst most of the previous studies concern on the competency of general project managers, this paper specifically investigates competency of project manager from client side who works as a civil servant, and commissioning public construction sectors. This paper aims to identify the important competencies required by CPM in construction projects in Indonesia and examine current Indonesian CPM competency standard. Relative Importance Index (RII) was employed to assess the important level of competencies. The findings will enrich understanding on client project manager competency and become a basis to undergird further empirical research in client project manager development areas.

scholarly journals STUDY ON RISK MANAGEMENT PRACTICES ON PUBLIC BUILDING CONSTRUCTION PROJECT: IN CASE OF EASTERN WOLLEGA ZONE

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Zelalem Mebrate Ejeta ◽  
Zelalem M ◽  
Vignesh Kumar M ◽  
Getnet Tadesse ◽  
Biftu Jaleta
Keyword(s):  
Risk Management ◽  
Construction Projects ◽  
Management Practices ◽  
Management Practice ◽  
Construction Project ◽  
Research Work ◽  
Building Construction ◽  
Market Condition ◽  
Public Building ◽  
Project Objectives

The Construction Industry is embedded with risky situations that affect construction projects and therefore requires systematic processing to achieve project objectives and ensure business sustainability (5). This research work was tries to study the risk management practice on public building construction projects and aims to identify the level that use of risk management practice especially in the public building. The data collection method was a combination of interview and questionnaire. Samples were purposively selected from clients, consultants, and contractors representatives who are now actively participating in public building construction projects. For this study, the data was collected using both primary and secondary sources. Depending on the data that was gathered from the respondent to test the level of awareness, identifying the Risk that affect the performance of public building construction project and major risk management practice on public building construction project are considered and the RII was used to rank the factors. This data was analyzed using SPSS of version 22 to perform descriptive statistics. A total of 75 questionnaires were targeted to be distributed and out of those 50 which is 66.67% are successfully responded. The finding from this study revealed that, about (52%) of the project progress is lagging from the schedule. Regarding the awareness of the risk management, (94%) of the respondents where confirmed that they have awareness of risk management ideologies and they are confident enough to implement their knowledge while, (6%) of them have no concept about the risk management. The top five risks that affect the performance of construction project have been identified and ranked. Accordingly; market condition, unexpected inflation, local taxes, inadequate production of raw materials, and the economic condition of country are the top five identified associated project risks.

The Conceptual Framework of Design Change Effects in Some Project Delivery Systems

2015 ◽  
Vol 776 ◽  
pp. 114-120
Author(s):  
A.A. Gde Agung Yana ◽  
H.A. Rusdi ◽  
M. Agung Wibowo
Keyword(s):  
Conceptual Framework ◽  
Delivery System ◽  
Construction Projects ◽  
Construction Project ◽  
Project Delivery ◽  
Design Change ◽  
Design Changes ◽  
Contractual Relationships ◽  
Project Construction ◽  
And Performance

Changes will always occur in project construction and can not be avoided. Many factors can cause changes in the construction project. Most dominant factors of cause of changes in project construction is design change. Design changes will have bad impact on the performance of construction projects, especially the performance of cost and performance time. Many factors can be the cause of design changes. Knowing the factors that cause a design change and knowing its behavior is very important to do. Knowing factor and behavioral of design changes that occur in project construction, and then can be managed properly, it will can be reduce the occurrence of design changes in projects construction. With the reduction of design changes will be able to improve the performance of construction projects, especially at cost and time performance. Construction projects carried out by using a project delivery system. Each project delivery system used will have different contractual relationships, rules, and responsibilities of each party involved. These differences will lead to in the occurrence differences in design change in project construction. Selection of appropriate project delivery system to complete a construction project is needed. The purpose of this paper is to provide a conceptual framework that can be used to determine the behavior, and the effect of design changes on project construction at some project delivery system used.

Causes of delay in construction projects: a quantitative analysis

2019 ◽  
Vol 27 (4) ◽  
pp. 917-935
Author(s):  
Elisabeth Viles ◽  
Natalia Carolina Rudeli ◽  
Adrian Santilli
Keyword(s):  
Quantitative Analysis ◽  
Construction Projects ◽  
Construction Project ◽  
Classification Method ◽  
Content Type ◽  
Cash Flow Management ◽  
Starting Point ◽  
Improvement Methodologies ◽  
Reducing Costs ◽  
Project Delay

Purpose The purpose of this paper is to perform a quantitative analysis of the literature in order to determine the main causes of delay in construction projects. Design/methodology/approach A set of 47 articles from the literature were analyzed, yielding 1,057 different causes of delay. In order to analyze and compare the main causes of delay, their degree of impact was studied statistically. Next, a mention count method was used to determine the primary causes of construction project delays and through the use of Pareto diagrams, the main causes of delays in construction projects were determined. Findings It was determined that the three main causes of construction project delay are problems that occur during execution, administrative problems and labor conflicts; together they account for almost 80 percent of the causes found in the literature. Moreover, it was deduced that problems during execution are based on unpredictable events, while administrative problems are rooted in poor cash flow management. In addition, seven sub-groups of delay causes were identified as being major due to the number of mentions detected. These were “Changes during construction,” “Poor construction management,” “Construction errors,” “Economic/Financial,” “Conflict/Relationship” and “Lack of experience.” Practical implications This study provides a unique classification method, which was successfully validated, for the causes of construction project delay. Thanks to the classification, designers may use this information as a starting point for designing future construction projects, thereby minimizing the appearance of unforeseen events during construction. Moreover, the results of this study will help project managers be aware of the possible causes of delay that may affect their construction projects. This understanding can help them identify potential risks in the initial phases of the project and allow decisions to be made early before problems arise or the consequences of the deviations become irreparable. The results can also serve as input for the development of future management improvement methodologies that are aimed at reducing costs and ensuring that deadlines are met. Social implications Identifying the factors and causes of the delays will allow mitigation actions to be taken in order to avoid delays, which will ultimately allow homes, schools, hospitals and other necessary infrastructure to be delivered on time or even before the planned date. Originality/value This study provides a unique classification method that was successfully validated. Thanks to the classification, designers may use this information as a starting point for designing future construction projects, thereby minimizing unforeseen events during construction.

scholarly journals Selection of tachymetry spacing in the process of monitoring of construction projects

2019 ◽  
Vol 97 ◽  
pp. 03027 ◽  
Author(s):  
Oleg Rubtsov ◽  
Ramidin Alisultanov ◽  
Nina Rogova
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Research Work ◽  
Deformation Monitoring ◽  
The State ◽  
Structural Elements ◽  
Reflection Mode ◽  
The Subject ◽  
The Cost ◽  
Selection Of

The urbanization of territories and the increase in density of urban development cause the necessity of introduction of improved structural solutions into the construction practice. This is also connected with both the erection of higher buildings with longer span structures and the use of non-standard methods for the analysis of structures. The introduction of modern structural patterns lessens considerably the weight of structures, reduces the consumption of materials and cuts the construction production costs. At the same time, the responsibility for the construction projects enhances. A systematic control over the state of structures including a quasi-continuous one, allows us to reveal the very beginning of destructive processes and to take measures for their liquidation. One of monitoring methods is the tachymetry survey of positions of a number of adjusting marks fixed at the structural elements. The non-reflection mode of operation of tachymetry survey allows lifting the restrictions for the number of points under observations. The combination of the afore-said factors determines the urgency of the use of the tachymetry as a tool for monitoring the state of the construction project. The subject of the study: the subject of the present research work is the methodology of selection of tachymetry spacing during the deformation monitoring of a construction project. The tachymetry can be carried out both in the mode of focusing on pre-established marks, and in the non-reflection mode through the points on the structure. The disadvantage of the first method is the need of installation of light-reflecting marks, which is not always possible due to some technical and/or aesthetic reasons and may lead to a significant increase in the cost of monitoring. The disadvantage of the second method is a reduced accuracy of the measurements. A wide incremental step may lead to the failure of detection of deformation processes, a narrow step means a considerable increase in the monitoring time and an unjustified rise in the cost of monitoring. Objectives: the purpose of this research work is the optimization of tachymetry spacing, which will reveal all deviations of structural elements from their permanent positions by a value exceeding the accuracy of measurements. Materials and methods: the initial material for the study included the results of geodetic observations carried out at various construction projects, in particular, the tachymetry results. The method of study includes the comparing of the limiting admissible curvature value to the minimum deformation value measured with the tachymeter accuracy. Results: a methodology is suggested for the selection of the tachymetry survey step. On its basis, a formula for the determination of a step value is offered that takes into account the geometry of the structure, the strain capacity of the material and the accuracy of the survey. Conclusions: the obtained results allow us to optimize the number of the observation points during the tachymetry survey and to ensure the detection of all destructive effects associated with structural geometry changes at the construction project. The descriptions of the methodology are recommended for their application in the development of geodetic monitoring programmes.

scholarly journals Combining Monte Carlo Simulation and Bayesian Networks Methods for Assessing Completion Time of Projects under Risk

2019 ◽  
Vol 16 (24) ◽  
pp. 5024 ◽  
Author(s):  
Ali Namazian ◽  
Siamak Haji Yakhchali ◽  
Vahidreza Yousefi ◽  
Jolanta Tamošaitienė
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Completion Time ◽  
Construction Projects ◽  
Construction Project ◽  
Industrial Case Study ◽  
Implementation Phase ◽  
Network Methods ◽  
Project Construction

In this study, Monte Carlo simulation and Bayesian network methods are combined to present a structure for assessing the aggregated impact of risks on the completion time of a construction project. Construction projects often encounter different risks which affect and prevent their desired completion at the predicted time and budget. The probability of construction project success is increased in the case of controlling influential risks. On the other hand, interactions among risks lead to the increase of aggregated impact of risks. This fact requires paying attention to assessment and management of project aggregated risk before and during the implementation phase. The developed structure of this article considers the interactions among risks to provide an indicator for estimating the effects of risks, so that the shortage of extant models including the lack of attention to estimate the aggregated impact caused by risks and the intensifying impacts can be evaluated. Moreover, the introduced structure is implemented in an industrial case study in order to validate the model, cover the functional aspect of the problem, and explain the procedure of structure implementation in detail.

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