Project Delays Research Articles

Assessment of most critical project delays on a multi-stage transmission expansion plan using particle swarm optimization

Transmission reinforcement projects of a Transmission Expansion Plan can suffer implementation delays that can impact the short-term power system operation in unpredicted ways. These delays may lead project managers to paying particular care to the development of those plans proved to be most critical from this point of view. This paper proposes a multi-objective dynamic-programming based method to evaluate the impacts of such delays in a short-term transmission plan with respect to load shedding, reliability and losses. It uses the Binary Pareto-Optimal Particle Swarm Optimization as optimization tool. For the trade-off analysis and the final decision to be made, the paper proposes indices to rank the projects in the plan from most to least critical, should they be delayed, based on the severity of the impacts and the probability of occurrence, both on an annual basis and for the whole planning horizon. The proposed method has been tested on an actual Brazilian 40-bus subtransmission system for a 3-year and a 6-year planning horizon, and with the 24-bus IEEE RTS reliability test system for a 3-year planning horizon. To assess its accuracy and efficiency, the results are compared to those using the Non-dominated Sorting Genetic Algorithm II method (NSGA-II) and to the exhaustive search that considers every delay configuration, showing the same accuracy as the exhaustive search and better convergence properties than NSGA-II. The most critical projects are accurately ranked helping the project manager to decide which projects should receive higher attention to guarantee its construction on the planned date. The method obtained a reduction in computational time of 35% for the Brazilian system and of 42% for the IEEE RTS in relation to the exhaustive approach, demonstrating its efficiency.

Evaluating and Incorporating Utility Coordination Practices into the Kentucky Transportation Cabinet Project Development Process

Utility relocations have been identified as one of the leading causes of delays in transportation projects. Over time, national perceptions about how state transportation agencies (STAs) should work with utility companies (UCs) have changed. The Kentucky Transportation Cabinet (KYTC), like other STAs, faces many challenges related to utility work. This paper presents the findings of a research project funded by KYTC, which aimed to evaluate the current KYTC utility coordination process to identify opportunities for improvement and propose a new approach for enhancing the alignment of this process and the highway design process. Researchers crafted this new approach based on the findings of a literature review, an evaluation of the current alignment between the utility coordination and highway design processes, and experiences and lessons learned from other STAs. This approach was developed iteratively in consultation with the project’s Study Advisory Committee. Research findings suggest viewing utility coordination as an opportunity to partner with UCs. In addition, the early identification of potential utility conflicts and minimizing utility-related project risks during the early stages of project development by avoiding, minimizing, and mitigating all utility conflicts when feasible are encouraged. Project findings were used to develop a guidance document to assist the implementation of a new approach and an associated Utility Coordination Training Program. This guidance document includes suggestions for identifying, managing, and mitigating utility-related risks using utility conflict management, provides information on the strategic use of subsurface utility engineering, and offers recommendations for managing consultant-led utility coordination.

Factors affecting the delay of urban development investment projects: A case of Vietnam

The project implementation schedule is an important plan for every construction project, to reduce and control project delays. The implementation of urban development investment projects is increasing in terms of both quality and quantity as urban areas are rapidly developing in cities. However, many construction projects are scheduled but they are late from due time. As the number of urban development investment projects increases, understanding the causes of project delays will help project managers and stakeholders limit these delays. This paper investigates all those factors which are causing a delay in the development of urban investment projects These factors are further developed through expert knowledge elicitation using the Delphi method. Lastly, as based on the issues identified were run to determine how they affected project delays. Finally, a survey based on the issues identified factors was conducted to assess how they affected project delays. The linear regression model is used to analyze the results from the survey. The results of the study indicate that there are six main factors that cause the delay in the implementation of urban development investment projects in Vietnam, including Policy, Design, Cooperation, Implementation, Financing and Objective factors. The study's findings indicate that there are six primary groups of elements, including Policy, Design, Collaboration, Implementation, Finance, and Objective factors, that contribute to the delay in the execution of urban development investment projects in Vietnam. The study offers a research model for the factors that contribute to delays in the execution of construction projects for urban development. This finding can serve as a foundation for ideas on how to deal with this issue in Vietnam as well as a guide for similar works.

Statistical Analysis of Delay-Causing Factors in Indian Highway Construction Projects under Hybrid Annuity Model

National highways are major transportation projects that greatly contribute to the economic and overall development of India. For speedy construction of national highways, in 2016, the Indian government rejuvenated the public–private partnership (PPP) model and approved the hybrid annuity model (HAM). In the HAM, government and contractor share 40% and 60% of total project cost, respectively, which reduces the financial burden on both. But in the present scenario, more than 200 HAM highway projects are facing delay for various reasons. To investigate the causes of delay in HAM highway projects, this paper provides a questionnaire-based, detailed statistical study of 35 identified delay-causing factors. The severity of each delay factor is elicited from 384 HAM highway construction experts including 123 government/client, 159 concessionaire/contractor and 102 consultant employees. Besides, 14 delay factors are identified using principal component analysis (PCA). Based on PCA and various other statistical analysis methods, such as ranking of delay-causing factors, correlation analysis, and hypothesis testing, results of the study indicate that delay because of land acquisition; delay in issuing various approvals/clearances; change in government laws and regulations; and inefficient planning, scheduling and controlling of projects are four major delay-causing factors of HAM highway construction projects. Moreover, this paper also provides some important suggestions to prevent delay in HAM highway construction projects.

Identifying the Causes of Delay in the Building Sector in Egypt: A Case Study of Small and Medium-Sized Companies

Delay in the construction industry is known to be a significant issue as indicated by many studies in the past few years. The construction sector in Egypt is not an exception as a wide range of projects are suffering from time overrun. the presence of time overrun in the project is the root of other problems such as cost overrun and poor quality. Hence, one of the simplest ways of dealing with delays is by identifying the causes and sources of delays in construction projects in Egypt. Therefore, this paper discussed the causes of delay in the building sector in Egypt according to the perspective of professional parties working in different small and medium-sized companies. The main method of data collection was a questionnaire survey with small and medium-sized companies in Egypt. The participants had more than 5 years of experience in the Egyptian construction sector. The financial problems faced by owners were considered significant by two different companies which indicates that this factor is usually the reason for delays in projects in Egypt. Ineffective planning and scheduling have also proven to be important in the procedure of preventing delays as it was mentioned by all experts involved in the data collection. This study has shown that the perspective of experts working in different companies may not be the same regarding the causes of delays in the construction sector. The adequate understanding of the causes aids in proposing effective strategies that can reduce the occurrence and impact of delays.

Analisis Faktor-Faktor Yang Mempengaruhi Keterlambatan Proyek Apartemen Opus Bay Balmoral Batam

Currently construction projects in Batam City in the field of foundations are increasing rapidly. This is a factor of success and economic growth in Batam City. The city of Batam has shown several towering construction buildings. Tall buildings are very easy to find in Batam City today. The increasing construction of high-rise buildings in Batam City must also be in line with the increase in the success of the project so that construction projects must be completed according to the specified schedule, the right budget, such as making a budget plan, and the expected final results. This study aims to identify the factors that cause delays in the Opus Bay Balmoral project in Batam City. Collecting data in this study used a survey method with a questionnaire instrument and direct interviews with respondents. Data were analyzed using the Relative Score Index method to obtain information on the dominant factors causing delays in the Opus Bay Balmoral development project in Batam City. The research results obtained, there are three factors which indicate that the factors causing the delay in the Opus Bay Balmoral project are: weather factors, design factors, and location factors. These three factors have relative index scores of 0.791, 0.508, and 0.505. Because these three factors have a Relative Index value of > 0.5, with a value for the design factor itself of 0.508, for the weather factor of 0.719 and a location factor of 0.505.

Delays of construction projects in Makkah from the point of view of the consultant

The study investigates the causes of delays in construction projects in the Makkah region of Saudi Arabia. The objective is to determine the most significant factors from the consultant designer and supervisor’s perspectives. This study is part of a series designed to explore the causes of delays from the perspective of different stakeholders in the construction industry. A comprehensive survey of 69 questions has explored various possible delay factors. All factors are grouped into eight categories based on their relevance and orientation. The factors were recorded and ranked by their relative importance index concerning their impact and frequency. The top three factors in their impacts are found to be (1) difficulties in financing the project, (2) poor management of the site and lack of distribution of tasks (3) low productivity of labor. The first two are delay factors related to the contractor group, and the third is related to the labor group. The highest in frequency relative importance index is (1) delays related to sub-contractor’s work, (2) lack of experience of the owner in the approval of the supervision team and (3) inadequate estimate of task duration and scheduling, inadequate training, and adopting new techniques. In the overall average of the impact index of all groups, the highest was the delays due to the contractor group, followed by delays due to the designer group, and finally, delays related to the labor group. The overall average of the frequency index of the whole group seems relatively low. The study’s novelty lies in the large number of delay factors that have been investigated, by collecting and analyzing actual data, focusing separately on the opinions of all stakeholders, and then comparing them to find objective results related to delays in construction projects in the Makkah region.

Causes of delays in the Egyptian Construction Projects

Causes of delays in the Egyptian Construction Projects

THE CURRENT STRATEGIES FOR EFFECTIVE COMMUNICATION IN THE MALAYSIAN CONSTRUCTION INDUSTRY

Effective communication is a fundamental factor for high productivity and successful delivery of construction projects. However, the disjointed nature of construction activities, the emergence of more advanced communication technology, and the involvement of workers from various disciplines and background makes effective communication a hassle in the construction industry. Despite the enormous studies on enhancing communication in the construction context, the issue of ineffective communication persists, thereby contributing to site accidents and project delays. cost overrun, disputes, and low labour productivity. Therefore, this study investigates the current strategies for effective communication in the construction industry, particularly in emerging countries like Malaysia. Twenty professionals including construction managers, site supervisors, construction labourers, and language professors were interviewed. The interviewees were selected via the convenient sampling technique and the In-depth interview data was analysed using thematic content analysis. The findings reveal that the root causes of ineffective communication in the construction industry are low literacy level of construction workers, poor management and supervision, lack of technical knowledge, the complexity of the construction industry, and the language barrier. Additionally, the strategies for effective communication in the Malaysian construction industry were established and categorized into 3: Technological Based Strategies, Integrated Process Strategies, and Human Engagement Strategies. The research output provides construction experts with a novel approach that can guide the construction workforce to effectively communicate using various communication mediums, thereby increasing productivity and profits.

IDENTIFICATION OF THE IMPACT OF MANAGEMENT KNOWLEDGE ON PROJECT DURATION THROUGH MULTIPLE DECISION-MAKING STEPS

The purpose of this study was to identify the management knowledge areas that significantly contribute to the delay of road construction projects and compare between countries. In this paper one of a probability sampling called simple random sampling technique was used to select sample from client, consultants, and contractors organizations directly involved in roads construction in Addis Ababa City. Four statistical tests: normality, reliability, spearman’s rank correlation, and Mann Whitney U test were conducted to identify and rank the roads delay factors accepted by all the stakeholders. Moreover, Road construction delay factors identified from previous studies conducted in Himachal Pradesh State and Ghana. A criterion to assign the identified delay factors into the ten management knowledge areas was defined and a modified equation called the relative aggregate importance index was developed to compute the impact of the management knowledge areas on project duration. As a result, the management knowledge areas namely: Integration, schedule, and stakeholders in the case of Addis Ababa City road projects, schedule and scope in the case of Himachal Pradesh State road projects, and integration, scope and quality management knowledge areas in the case of Ghana road projects have been identified as significant contributor to the extension road construction duration.

Enhancing BIM security in emergency construction projects using lightweight blockchain-as-a-service

Rapid design and construction of mobile cabin hospitals (MCHs) have become imperative in the COVID-19 response. However, due to unique design specifications (e.g., parallel design and model pre-revision), collaboration in emergency construction projects (ECPs) like MCHs presents data security vulnerabilities, including a lack of traceability and transparency. These hazards invariably reduce design effectiveness, leading to undesirable rework and project delay. Blockchain technology is a potential solution to address the aforementioned security issues in ECPs because it offers immutable and traceable data storage. Nevertheless, directly implementing blockchain in ECPs is impractical, for the blockchain has a complex deployment process and provides limited functions supporting BIM-based design. Therefore, this paper develops a lightweight blockchain-as-a-service (LBaaS) prototype to enhance the ECPs design efficiency by securing and automating information exchange while eliminating the difficulties of deploying and using blockchain. This paper contributes three elements: (1) Security vulnerabilities of design in ECP are identified. Taking an MCH in Hong Kong as an example, this paper investigates its design process and determines two design characteristics and associated security flaws. (2) Key technologies to support easy deployment and usage of blockchain in ECPs are developed. New technical elements, including a Multi-to-One mapping (MtOM) kit for easy blockchain registration, an integrated workflow retaining existing design practices, and smart contracts for secure interaction with blockchain, are developed to support LBaaS functionality. (3) An LBaaS prototype is validated and evaluated. The prototype is illustrated and evaluated using design examples based on actual MCH project data. Results show that the LBaaS is a feasible and secure approach for ECPs collaboration. This paper deepens the understanding of data security issues in ECPs and offers technical guidance in establishing blockchain solutions.

Deep Multilayer Perceptron Neural Network for the Prediction of Iranian Dam Project Delay Risks

Deep Multilayer Perceptron Neural Network for the Prediction of Iranian Dam Project Delay Risks

Precautions For Jakarta-Bandung High-Speed Rail Infrastructure Project Cooperation: Construction At Night And In Storm

The Jakarta-Bandung high-speed rail infrastructure project delays cause the financial burden in the form of interest during construction to swell KCIC had to improve project performance by carrying out construction at night and must improve strategies for dealing with Indonesian extreme weather. Before construction at night, strict inspection shall also be focused on lighting lamps. Construction personnel shall prepare flashlights, searchlights, all parts and components shall be carefully inspected in strict accordance with relevant regulations to ensure the normal operation of the equipment. During the flood season, the construction personnel of large-scale railway maintenance machinery shall strictly implement the measures for safe driving in the flood season issued by the Ministry of railways. the construction staff shall report the disaster and dangerous situation to the attendant of the nearest station through the train dispatching station in time. When large-scale railway maintenance machinery encounters strong wind, rainstorm, Blizzard and other difficulties or unknown conditions during construction and operation, it shall immediately stop construction and slow down, and timely report the situation to the station.
 Keyword: KCIC, Construction, Railway, Maintenance.

A Literature Review on Developing Causes and Mitigation Strategies of Delay in Construction Projects: Gaps Between Owners and Contractors in Successful and Unsuccessful Projects

The construction industry is known for its high risk of project delays, which can lead to cost overruns and reduced project performance. This literature review examines the causes of delays in construction projects, as well as the mitigation strategies used by owners and contractors to address these issues. The study also explores the gaps between owners and contractors in successful and unsuccessful projects, highlighting the need for improved communication and collaboration between these two groups. The review found that the most common causes of delay in construction projects are design changes, poor project management, labour shortages, and material shortages. To mitigate these issues, owners and contractors employ various strategies, including scheduling and resource allocation, risk management, and project monitoring and control. The study also revealed that successful projects are characterized by effective communication and collaboration between owners and contractors, while unsuccessful projects often result from a lack of trust and cooperation. The review suggests that owners and contractors can improve project outcomes by establishing clear project goals, developing a shared understanding of project risks and requirements, and fostering open communication throughout the project lifecycle. Overall, this literature review highlights the importance of addressing the causes of delay in construction projects through effective mitigation strategies and improved collaboration between owners and contractors. By implementing these measures, stakeholders can improve project outcomes and reduce the risk of costly delays and overruns.

Project Delay Risk Assessment

Maintenance activities on power plant projects, which are located in remote areas, are prone to risks related to project delay due to the high complexity of work and limited completion time. This research aimed to fill the existing research gap by developing a delay risk assessment of those projects using a probability impact matrix, which is then transformed into a fuzzy set theory. A case study has been undertaken to represent this research topic at three PLTMGs in Nusa Tenggara. The research steps were potential delay risks identification, critical risk assessment, and risk response development. The results show that the critical risks are lack of skilled and experienced manpower, delay in material and equipment delivery, poor communication and coordination between the contractor and the client, unavailability of materials in the local market, and incomplete material received. Several risk responses are provided in this research, such as strengthening the qualification of the job vacancy, having regular training or sharing sessions before the project execution, and having a stock of emergency spare parts in the central warehouse.

Dynamic Progress Monitoring of Masonry Construction through Mobile SLAM Mapping and As-Built Modeling

Traditional progress monitoring can be inaccurate and time-consuming, potentially causing time delay and cost overrun in construction projects. With development in technology, tools such as cameras, laser scanners, and building information modelling (BIM) have been used to overcome existing problems in the traditional approach. However, noise mitigation, extracting objects of interest from laser point clouds, and detailed progress measurement are problems that still exist. In this study a novel method of construction progress monitoring to measure the progress percentage is presented. The study integrates the simultaneous localization and mapping (SLAM) technique with as-built BIM to gather quick and accurate construction site progress information. The Hausdorff distance is utilized to extract objects of interest and filter out noise from site-scan data. As-built and as-planned BIM models are compared using Python and Dynamo, to obtain progress percentage. A case study was conducted on a residential building located in Sydney, Australia, to validate the application of the developed method. The outcome demonstrates that utilizing the SLAM technique and Hausdorff distance are effective in mitigating noise and extracting objects of interest from site-scan data, respectively. In addition, with an accuracy of 94.67 percent in estimation, the progress percentage was obtained based on material quantities. The obtained progress percentage could also be used in updating construction schedules and assisting decision-making.

Assessment of Client-Related Factors for Delaying of Public Buildings Constructions Projects in Local Government Authorities: A Case of Arusha City Council

This study aimed to assess client-related factors for delaying of Public buildings construction projects in Local Government Authorities. The factors assessed were; project design, political intervention and decision-making challenges. The study was conducted at Arusha City Council (ACC) employing cross-sectional survey through semi-structured questionnaire and interview guide to 55 sampled informants. . Cross tabulation with Chi-square tests was deployed to analyse data. Following the findings of the assessment of client-related factors for delaying of public buildings construction projects in Arusha City Council, it is concluded that inadequate project design is one of the major causes of delays of public buildings construction projects in local government authorities. More specifically, variations due to inadequate design, the effect of insufficient budget resulting from inadequate project design and insufficient professional staff are the main causes of delays in public buildings constructions project. It is also apparent that political intervention is another major factor that contributes to delaying public building construction in Arusha City council (ACC). It is also concluded that decision making challenges is another major contributor to delaying public building construction projects in ACC. More specifically, it is concluded that bureaucracy in the decisions making process, unnecessary directives by government officials and delays in the payment of interim certificates are the main causes of delaying public buildings constructions projects in ACC. It is recommended that the government should employ an adequate number of building construction engineers, quality assurance officers, as well as project monitoring and evaluations officers who are expected to be tasked to ensure that projects are designed adequately, and their execution are managed and monitored effectively. Also, the government should avail adequate budget for all public building construction works and should pay interim certificates timely to avoid delaying the projects. In addition, the government should formulate and institute a general guideline that obstructs politician and government officers to be bid for public building construction works in their respective councils. This measure is expected to prevent conflict of interest among politicians and government officers.

Assessment of public building defects and maintenance practices: Cases in Mettu town, Ethiopia

Building flaws are one of the main aspects of building problems that need to be carefully considered. Besides the high demand for construction projects in Ethiopia, the problems of defective buildings and maintenance issues were so prevalent. According to the researchers' field survey, Mettu town's public buildings have suffered from major building defects and deterioration, and neglect of maintenance practices. This research aimed to assess building construction defects and maintenance practices in Mettu building projects. A case study and questionnaire survey were utilized for data collection. A Case study was conducted on a randomly selected nine public building projects in Mettu Town using site observation and formal checklists. Whereas, a questionnaire method was used to address the study objectives based on respondents' perspectives using ordinal scales of Likert's. The Spearman rank correlation coefficient, mean score, and weighted average values were utilized for data analysis using Microsoft Excel spreadsheet and SPSS version 20 tools. The study revealed that non-structural cracks were found the top first-ranked building defect. Shortage of budget, inadequate maintenance standards, and Poor maintenance cultures were the top-ranked building maintenance factors. Project delay, High maintenance cost, and diminishing reputation were the top-ranked impacts of building defects. Periodic and regular construction supervision and proper and periodic maintenance were the top measures to minimize building defects.

Identify Causes of Delay and Cost overrun in Residential Construction Projects at Surat Region in India: A Review

A construction project is deemed successful if it is finished within the timeframe provided. A variety of variables lead to project major failure. Construction delays and cost overruns are two of them. Project delays impede growth in all other connected disciplines. A project delays study was conducted to examine the delay causes, the impact of delays, and techniques for decreasing construction delays. Poor performance measure is a typical concern in building projects, with few projects finishing on time and within budget. According to previous studies (publications), around 90% of construction projects have delays and cost overruns ranging from 5% to 200%. The research includes a literature review as well as a questionnaire survey. A detailed questionnaire survey was used to collect data for this investigation. The building of the urban development project is significantly more challenging due to the large number of players involved. These parties include the client, contractors, architect, suppliers, consultants, and labours. It is essential to figure out whether delay is crucial or not, as identifying the critical delays aids in the implementation of relevant actions at the proper time. The purpose of this research is to assess the various forms of delays as well as the reasons of those delays that are hurting projects in India's Surat area. 8 main groups were responsible for construction delays. The weights of the delay factors and groups were computed and evaluated. An examination of the literature revealed 45 variables that influence delays. The questionnaire was distributed to construction projects. Keywords: Construction, Project, Delay, Cost overrun, Time, Process, Factors, Management, client, contractor, designer, suppliers, consultant and labours, India.

Evaluation of the Implementation Time of The Apbn/Apbd Project at The End of The Year With A Single-Year Budget

In a project, it is necessary to have a work between owners and contractors that are used as a legal basis, in the form of construction contracts. One of these contracts is a contract for the procurement of goods and services based on the charge of its fiscal year consisting of a single-year contract which is the execution of a contract of work binding funds for 1 year while the contract of the plural year is a contract for the execution of work for a period of more than one fiscal year on the budget. Project delays almost occur every year and this results in huge losses for service users and service providers both in terms of finance and time. Project delays are divided into several types, namely: excusable delays, unforgivable delays, and delays that get compensation. Project delays are caused by several factors such as late payments and design changes. This factor greatly affects the performance of implementation in the field. The research process is carried out by conducting a survey. Starting with disseminating questionnaires to Owners, Contracts and outside parties as well as through literature studies, it is carried out to find out the comparison of the causes of project delays