CHOOSING AN APPROPRIATE CONTINGENCY SUM ESTIMATING METHODS FOR HIGHWAY CONSTRUCTION PROJECTS IN NIGERIA: A LITERATURE REVIEW

2017 ◽  
Vol 15 ◽  
Author(s):  
Razali Abdul Hamid ◽  
Fabi Jonathan Kehinde
Keyword(s):  
Literature Review ◽  
Construction Projects ◽  
Health And Safety ◽  
Main Function ◽  
Cost Overrun ◽  
Highway Projects ◽  
Building Projects ◽  
Quality Health ◽  
Single Method ◽  
Project Objectives

In order to establish a gap to be filled in a particular field, there is a need to gather information that allows the researcher to identify and analyse the current state of researches on the topic. Contingency sum estimation for projects plays an important role for inclusion for risk taken by the contractor on the bid amount. This is good in order to meet project objectives (cost, time, quality, health and safety, and environment). The main function of contingency sum is to cater forvariations that arise during the construction phase of projects. The aim of the study is to identifying and examine the various methods for estimating contingency sum for projects with a view to propose an appropriate method which will be suitable for a specific project in order to increase accuracy and reduce cost overrun. A literature review of selected papers (journals, conference proceedings and theses) on contingency estimation was carried out. The major findings from this study is that most studies were carried out on building projects while few were carried out on highway projects. From the analysis carried out, no single method of estimating has been effective for all types of projects. These methods of estimating contingency sums have developed over the years as a result of shortcomings of one method after the other. It is therefore recommended that peculiarity of each project, ease of using each of the methods and accuracy of the estimates needed should be the basis of choosing method of estimating contingency sum.

scholarly journals CHOOSING AN APPROPRIATE CONTINGENCY SUM ESTIMATING METHODS FOR HIGHWAY CONSTRUCTION PROJECTS IN NIGERIA: A LITERATURE REVIEW

2017 ◽  
Vol 15 (1) ◽  
Author(s):  
Razali Abdul Hamid ◽  
Fabi Jonathan Kehinde
Keyword(s):  
Literature Review ◽  
Construction Projects ◽  
Health And Safety ◽  
Main Function ◽  
Cost Overrun ◽  
Highway Projects ◽  
Building Projects ◽  
Quality Health ◽  
Single Method ◽  
Project Objectives

In order to establish a gap to be filled in a particular field, there is a need to gather information that allows the researcher to identify and analyse the current state of researches on the topic. Contingency sum estimation for projects plays an important role for inclusion for risk taken by the contractor on the bid amount. This is good in order to meet project objectives (cost, time, quality, health and safety, and environment). The main function of contingency sum is to cater forvariations that arise during the construction phase of projects. The aim of the study is to identifying and examine the various methods for estimating contingency sum for projects with a view to propose an appropriate method which will be suitable for a specific project in order to increase accuracy and reduce cost overrun. A literature review of selected papers (journals, conference proceedings and theses) on contingency estimation was carried out. The major findings from this study is that most studies were carried out on building projects while few were carried out on highway projects. From the analysis carried out, no single method of estimating has been effective for all types of projects. These methods of estimating contingency sums have developed over the years as a result of shortcomings of one method after the other. It is therefore recommended that peculiarity of each project, ease of using each of the methods and accuracy of the estimates needed should be the basis of choosing method of estimating contingency sum.

scholarly journals Ranking of Effects of Construction Delay: Evidence from Malaysian Building Projects

2018 ◽  
Vol 8 (1) ◽  
pp. 79-84
Author(s):  
K. Ullah ◽  
M. S. Khan ◽  
M. T. Lakhiar ◽  
A. A. Vighio ◽  
S. Sohu
Keyword(s):  
Literature Review ◽  
Questionnaire Survey ◽  
Construction Projects ◽  
Poor Quality ◽  
Cost Overrun ◽  
Building Projects ◽  
Importance Index ◽  
Main Effects ◽  
Total Project

Abstract The problem of delay is a regular phenomenon in construction projects all around the world and the Malaysian building projects has no exclusion. The aim of this paper is to determine and rank the effects of delay in Malaysian building projects with respect to their Relative Importance Index. Literature review and questionnaire survey were used to gather data for this study. A thorough literature review was performed to identify the common effects of delays in building construction projects. A questionnaire was distributed among key project participants; contractors, clients and consultants, to rank the effects of delay in Malaysian building projects based on the perception of survey respondents. In total 300 questionnaires were distributed, as a result of 240 questionnaires were received. The collected data of questionnaire survey was analysed using statistical software SPSS. In total, 17 effects of the delays have been determined and findings from the survey revealed that time overrun, cost overrun, dispute, loss of profit, arbitration, claims, contract termination, litigation, poor quality of work, and total project abandonment were the main effects of delay in Malaysian building projects. The findings of this study might encourage construction stakeholders to focus on the issue of delays in building projects.

scholarly journals Identification of Causes and Minimization of Delays in Highway Projects of Pakistan

2019 ◽  
Vol 38 (1) ◽  
pp. 103-112
Author(s):  
Samiullah Sohu ◽  
Abdul Fattah Chandio ◽  
Kaleem ullah
Keyword(s):  
Literature Review ◽  
Construction Industry ◽  
Questionnaire Survey ◽  
Construction Projects ◽  
Structured Interview ◽  
Mitigation Measures ◽  
Structured Interviews ◽  
Highway Projects ◽  
Mean Values ◽  
Causes Of Delays

The problem of delay in construction industry is a regular phenomenon worldwide, and construction industry of Pakistan has no exception, particularly in highways projects. Delay can be described as the extension of time to complete the construction project. The aim of this paper is to identify main causes of delays in highway projects of Pakistan, and to determine mitigating measures for the identified causes. The research method of this study is based on literature review, questionnaire survey and semi structured interview. From in-depth literature review, twenty-six common causes of delay were found. A questionnaire survey was carried out among construction professionals of highway projects. The causes of delay in highways projects were ranked referring to their Mean values. A semi structured interview was carried out to determine mitigation measures for the top ten causes of delays. The data gathered from questionnaire survey was analyzed using SPSS (Statistical Package for the Social Sciences) while, data collected through semi structured interviews was analyzed using Nvivo software. The findings of this study are expected to be useful for construction parties, to mitigate the delays in highway construction projects of Pakistan.

scholarly journals Opportunities and Challenges for Construction Health and Safety Technologies under the COVID-19 Pandemic in Chinese Construction Projects

2021 ◽  
Vol 18 (24) ◽  
pp. 13038
Author(s):  
Yang Yang ◽  
Albert P. C. Chan ◽  
Ming Shan ◽  
Ran Gao ◽  
Fengyu Bao ◽  
...  
Keyword(s):  
Construction Projects ◽  
Influence Factor ◽  
Driving Forces ◽  
Influence Factors ◽  
Health And Safety ◽  
Information Modeling ◽  
Cost Overrun ◽  
Construction Sector ◽  
Structured Interviews ◽  
The Government

The Coronavirus disease 2019 (COVID-19) pandemic has resulted in significant delays and cost overrun in construction projects. The implementation of health and safety (H&S) technologies is one of the most important strategies to alleviate the adverse impacts of COVID-19 on the construction industry and help the industry adapt to the new normal. This study aims to evaluate the adoption of H&S technologies for pandemic management in the construction sector under the COVID-19 pandemic. Semi-structured interviews with eighteen practitioners engaged from construction companies and technology firms were conducted to collect their views on the driving forces and issues of the adoption of H&S technologies for pandemic management in Chinese construction projects. The results reveal that the major H&S technologies used included the health quick response (QR) code system, artificial intelligence (AI)-powered fever monitoring, and site access control system. These technologies were reported to be effective in preventing the spread of the pandemic in workplaces. The findings of the study amplify that the pandemic may serve as an acceleration of the adoption of H&S technologies in the construction sector. Other technologies, such as building information modeling, drones, AI-based safety monitoring, and robotics, however, were seldom used in the studied projects. The interviewees addressed several problems regarding the implementation of these technologies. High costs of technologies, a lack of client support, and disruptions to the normal work process were the main hurdles of the adoption of these technologies. The results indicated that the external influence factor—the COVID-19 pandemic—could considerably drive the use of H&S technologies, whereas the internal influence factors—cost and compatibility of technology—might be the major barriers to technology adoption. To encourage the wider use of H&S technologies in construction, the government is recommended to support the technology transformation by granting financial subsidies for costs involved in innovation adoption. Project owners may consider investing substantially in H&S technologies that can strengthen their resilient and innovative ability to adapt to the post-COVID-19 landscape. The present results will be useful to industry stakeholders and researchers interested in developing H&S technologies for combating the COVID-19 pandemic and future crises.

scholarly journals Moderating role of government Acts, laws and policies between team competency and skills and construction risk management among KSA contractors

2021 ◽  
Vol 11 (2) ◽  
pp. 144-165
Author(s):  
Muhammad Abdul Rehman ◽  
◽  
Md. Sayuti Bin Ishak ◽  
Keyword(s):  
Risk Management ◽  
Construction Projects ◽  
Statistical Power ◽  
High Efficiency ◽  
Cost Overrun ◽  
Role Of Government ◽  
Construction Risk ◽  
Laws And Policies ◽  
Project Objectives

Contractors have given importance to risks in the construction process as it causes time and cost overrun, delays, and total desertion in activities and events present in the construction project. The uncertainty in the completion time, cost, and quality during construction relate to construction risks. Project goals are achieved by classifying, investigating, and replying to risks associated with construction projects. To achieve project objectives, team competency and skills are required, which are viewed as attitude, aptitude, versatility, and knowledge. Based on organisation control theory, current research (quantitative in nature) discusses the influence of team competency and skills on construction risk management with the moderation role of government Acts, laws, and policies among 303 large-size contractors working in the Kingdom of Saudi Arabia using PLS-SEM technique. PLS-SEM is a composite-based approach that provides high efficiency parameter estimation with increased statistical power for analyzing complex models. Results depict that government Acts, laws and policies and team competency and skills positively influence construction risk management. In addition, moderation of government Acts, laws, and policies has positive relation among team competency and skills and construction risk management. Organisational management can reduce risk occurrence within a project by building conditions for enhancing team competency and skills.

scholarly journals Effect of Manpower and Resource Factors on Labor Productivity at House Building Projects in DHA Lahore

2021 ◽  
Vol 1 (1) ◽  
pp. 12-20
Author(s):  
S. Mutahir Hussain Shah ◽  
Muhammad Nawaz ◽  
Aimen Batool
Keyword(s):  
Literature Review ◽  
Construction Industry ◽  
Labor Productivity ◽  
Construction Projects ◽  
Project Manager ◽  
Quality And Safety ◽  
Building Projects ◽  
Low Performance ◽  
Building Project ◽  
House Building

Construction industry suffers numerous issues and complicated factors like price, period, quality and safety. It is said that Construction projects are versatile because they associate with contractors, architects, advisers, designers, the project owners, etc. Keeping in view of above factors, objective of this research is to highlight those factors which have impact on labor productivity in house building project. Through literature review as well as discussion with different consultants, several factors of productivity were identified. Out of which 20 factors were selected, which were later categorized into two sets, for analyzing in the current study. A comprehensive questionnaire was prepared and sent to project manager, engineers, designers, and builders. It was found, that total expense of construction comes to much higher as it was originally calculated. It is suggested that human resource should be developed through an effective and well planned training program, so that construction project do not suffer due to low performance. The mentioned factors are supposed to help in completed the construction projects effectively.  

scholarly journals Peranan Manajemen K3 dalam Pencegahan Kecelakaan Kerja pada Bidang Konstruksi

2019 ◽  
Author(s):  
Anisa Rahmawati
Keyword(s):  
Occupational Health ◽  
Literature Review ◽  
Construction Projects ◽  
Construction Project ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Security System ◽  
Project Development ◽  
Organization And Management ◽  
Work Accidents

Construction project Development is an event that has high risks of accidents. This could be seen in many construction projects that use sophisticated tools. Although equipped with security system, the risks are still high. The point of Occupational Health and Safety is to protect workers, and to step up the work effectively and efficient. Accidents in workplace happened because of the improper organization and management of the company. Therefore, in Construction project Development, Occupational Health and Safety is needed. The point in making this article is to prevent any accident in workplace with applying the Occupational Health and Safety that is suitable with the Constitution. This research is using the literature review method. The result of this article emphasizes in Occupational Health and Safety’s role as a right way to prevent work accidents in construction project.

scholarly journals Health and safety coordinators in building projects

2014 ◽  
Vol 4 (3) ◽  
pp. 251-263 ◽  
Author(s):  
Lena Almén ◽  
Tore J. Larsson
Keyword(s):  
Construction Projects ◽  
Health And Safety ◽  
Building Projects ◽  
Content Type ◽  
Telephone Interviews ◽  
Leading Role ◽  
Planning Phase ◽  
Design Changes ◽  
Statistical Reflection ◽  
The Coordinator

Purpose – In order to reduce the number of injuries on construction sites, a European Directive prescribes that the clients shall appoint safety and health coordinators in their projects. The purpose of this paper is to find out who are appointed to be health and safety coordinators for the design and planning phase and what they do in order to prevent injuries on sites. Design/methodology/approach – Since the 1st of January 2009, there shall be a coordinator for the design and planning phase in Swedish construction projects. Telephone interviews were made with the coordinators in 42 Swedish building projects. Findings – The coordinators’ education and experiences varied widely, as well as their descriptions of their duties: no duties, administration and active injury prevention. The coordinators who were classified as most active had at least one additional leading role in the projects. Research limitations/implications – The study is qualitative for an increased understanding, not a statistical reflection of the coordinator population. Practical implications – The legislation needs to clarify whether the early conceptual phase of the project is included in the coordinator's commission and whether she/he is supposed to participate in identifying, assessing and reducing risks through design changes. These clarifications will have an influence on when the coordinator should be appointed and what competence she/he needs. Originality/value – The study increases the understanding of how the health and safety coordinators of the planning and projecting phase of building projects perceive their mission and what factors, according to them, have an influence on what they do.

scholarly journals Evaluasi Penerapan Keselamatan Dan Kesehatan Kerja (K3) Pada Proyek Bangunan Gedung Di Kabupaten Cirebon

2017 ◽  
Vol 19 (1) ◽  
pp. 1-8
Author(s):  
Aryati - Indah
Keyword(s):  
Construction Projects ◽  
Large Scale ◽  
Health And Safety ◽  
Selling Price ◽  
Construction Sector ◽  
Building Projects ◽  
Structural Work ◽  
Practical Guidelines ◽  
Survey Approach

The purpose of this study are: 1) evaluating the implementation and constraints of K3 in Building Construction Projects in Cirebon, 2) identifying the differences of implementation in project scale based. The method used survey approach at 10 contractors on 10 two-floors or more building projects in Cirebon. Evaluation component was developed from Practical Guidelines document Occupational Health and Safety in the Construction Sector (ILO, 2005). The study found that the level of K3 implementation on aspects of the personal protective equipment (60%), the role of emergency condition (75%), Structural work, Scaffolding and Ladder (66.7%), Use of Toxic and Dangeorus Materials ( 62.9%), Health and Hygiene of Work Environmental (89.2%). Constraints of K3 implementation in general are budgetary, workers cultural who are not familiar with the K3 implementation and impact of the construction cost and the selling price of the property. Average of K3 implementation in large-scale projects are higher than small and medium-scale projectsTujuan dari penelitian ini adalah: 1) untuk mengevaluasi penerapan dan kendala penerapan K3 pada proyek bangunan gedung di Kabupaten Cirebon, 2) mengetahui perbedaan penerapan K3 berdasarkan skala proyek. Metode penelitian menggunakan pendekatan survei terhadap 10 kontraktor pada 10 proyek bangunan gedung 2 lantai atau lebih di Kabupaten Cirebon. Komponen evaluasi K3 dikembangkan berdasarkan Pedoman Praktis Keselamatan dan Kesehatan Kerja di Bidang Konstruksi (ILO, 2005). Hasil penelitian menemukan bahwa tingkat penerapan K3 pada aspek: penggunaan Alat Pelindung Diri (APD) (60%), Pengelolaan Kondisi Darurat (75%), Pekerjaan Struktur, Perancah dan Tangga (66,7%), Penggunaan Bahan Beracun dan Berbahaya (62,9%), Kesehatan dan Kebersihan Lingkungan Kerja ( 89,2%). Kendala penerapan K3 pada umumnya adalah anggaran, budaya pekerja yang belum terbiasa dengan penerapan K3 serta dampak penerapan terhadap biaya dan harga jual konstruksi properti. Rata-rata penerapan K3 lebih besar pada proyek skala besar dibandingkan proyek skala sedang dan kecil.

scholarly journals Significant Mitigation Measures for Critical Factors of Cost Overrun in Highway Projects of Pakistan

2018 ◽  
Vol 8 (2) ◽  
pp. 2770-2774 ◽  
Author(s):  
S. Sohu ◽  
A. H. Abdullah ◽  
S. Nagapan ◽  
A. A. Jhatial ◽  
K. Ullah ◽  
...  
Keyword(s):  
Literature Review ◽  
Construction Industry ◽  
Common Factors ◽  
Mitigation Measures ◽  
Preliminary Survey ◽  
Cost Overrun ◽  
Critical Factors ◽  
Highway Projects ◽  
Preliminary Study ◽  
The Cost

Stakeholders of the construction industry and academia are often facing problems of cost overrun. It has been observed that many constructions of highway projects are not completed at the approved cost due to certain factors. The objective of this research is to identify the cost overrun critical factors involved in highway projects with their significant mitigation measures. In this regard, literature review helped to identify 64 factors of cost overrun. Based on these 64 common factors, a preliminary survey was carried out among 30 selected respondents of highway projects to identify the critical factors of cost overrun and its possible mitigation measures. Results of the preliminary study reported 8 critical factors and 42 possible mitigation measures for the identified factors. Another questionnaire was established on the findings of the preliminary survey and was distributed among 350 stakeholders of highway projects to identify the significant mitigation measures of finding critical factors of cost overrun. In total, 8 significant mitigation measures were identified as causative and critical factors of cost overrun. The findings of this research would be helpful for the construction practitioners who are dealing with cost overrun issues in the highway projects of Pakistan.

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