Sameh El-Sayegh - Academia.edu (original) (raw)
Papers by Sameh El-Sayegh
Buildings, 2020
Claims and disputes occur frequently in the construction industry between different contracting p... more Claims and disputes occur frequently in the construction industry between different contracting parties, mainly the owner, the designer and the contractor. Consequently, valuable time and a significant amount of money are lost. The United Arab Emirates (UAE) construction industry, one of the most vibrant sectors globally, is experiencing a high level of construction disputes and claims. This paper aims to identify and assess the major causes of disputes in the UAE and weigh the effectiveness of the methods used for their avoidance and resolution. The sources of disputes, and their avoidance/resolution methods, were identified through a comprehensive literature review. A survey was then developed and sent to 150 construction professionals. Fifty-four responses were received and analyzed. The results show that the top five sources of disputes in the UAE are variations initiated by the owner, obtaining permit/approval from the municipality and other governmental authorities, material c...
Collaboration and Integration in Construction, Engineering, Management and Technology, 2020
The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution author... more The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations.
Project delivery method refers to the owners’ approach in organizing the project team that will m... more Project delivery method refers to the owners’ approach in organizing the project team that will manage the entire design and construction process. There are mainly three categories of delivery methods: traditional design-bid-build, design-build and construction management. The choice of the appropriate delivery method is a key decision that has to be made by owners early in the project lifecycle. This decision has a great impact on project success. Through literature review, a comprehensive list of twenty one factors was determined. These factors are grouped into eight categories: time, cost, scope, quality, owner organization, cash flow, project characteristics and risk and relationships factors. A survey was then developed and distributed to construction experts associated with the United Arab Emirates (UAE) construction industry to get their perception as to the importance of these factors. The data was then analyzed and the factors ranked according to their Relative Importance I...
The selected contractor has a big influence on the project and its success. Hence, the selection ... more The selected contractor has a big influence on the project and its success. Hence, the selection of the appropriate contractor is a critical and vital task. Construction Management at Risk (CM@R) is one of the most popular and increasingly adopted delivery methods. The CM@R company is unique because it performs two main tasks: construction management and general contracting. There is a number of models and lists that can be used to select the appropriate contractor when using the traditional design-bid-build and design-build delivery methods. However, there are no models that assist owners in selecting the unique CM@R company. Selecting a CM@R company according to a general contractor factor list can easily mislead the evaluator to choose a wrong contractor. This paper presents the selection factors for the appropriate CM@R company. These factors are generated through extensive literature review. Construction Management at Risk selection factors can be used by owners to evaluate dif...
Since the 1950’s, the use of project scheduling tools and techniques has grown, and continues to ... more Since the 1950’s, the use of project scheduling tools and techniques has grown, and continues to grow, at a rapid pace with the increasing challenges and risks each day. The construction industry is viewed as one of the largest industries in the United Arab Emirates (UAE), yet no clear statistics have traced the use of scheduling tools and techniques in UAE construction projects. The main objective of this paper is to evaluate the application of project scheduling tools and techniques in the UAE construction industry in terms of the use, benefits and barriers. The study was conducted over a sample of 45 respondents. The study shows that the mainly used technique in the UAE construction industry is the Critical Path Method (CPM). The main identified scheduling tools are Microsoft Project and Primavera P3. The results indicate that the scheduling tools and techniques are applied 50-75% of the time mainly due to company requirements and contract requirements. The main identified benefi...
Journal of Financial Management of Property and Construction, 2021
Purpose This paper aims to identify and assess the key criteria for selecting green suppliers in ... more Purpose This paper aims to identify and assess the key criteria for selecting green suppliers in the United Arab Emirates (UAE) construction industry. Design/methodology/approach A total of 20 criteria were identified and shortlisted through an extensive literature review. These criteria were grouped into four categories: technical and commercial bid, company characteristics, environmental and socioeconomic. A questionnaire was then developed and distributed to construction professionals in the UAE. A total of 39 professionals responded to the survey including contractors, consultants, owners and suppliers. The respondents performed pairwise comparisons among the selection criteria. Data was then analyzed using the Expert Choice Software. Findings The research findings highlighted that the technical and commercial bid category was ranked as the most important with a weight of 0.338, followed by socioeconomic, company characteristics and environmental categories weighing 0.239, 0.225...
Sustainable Cities and Society, 2021
Abstract Sustainability-related risks and risk management frameworks have been introduced in the ... more Abstract Sustainability-related risks and risk management frameworks have been introduced in the literature to help project managers identify and manage critical risks influencing project sustainability. Theoretically grounded in the framework of Monte Carlo Simulation, this paper introduces and operationalizes a new process for prioritizing sustainability-related project risks using risk matrix data. Sustainability-related construction project risks have never been assessed relative to different confidence levels across the risk matrix-based exposure zones. The application of the proposed process on the construction projects completed in the United Arab Emirates reveals that the conventional risk prioritization scheme undermines the importance of tail risks (unexpected events), whereas such risks are captured in the proposed process. In contrast to the most critical risks identified using the conventional scheme such as shortage of client’s funding, insufficient or incorrect sustainable design operation, and design changes, the proposed process prioritizes risks such as poor productivity of labor and equipment in sustainable construction, unreasonable tight schedule for sustainable construction, and poor scope definition of sustainable construction. The proposed process is generalizable to prioritizing risks influencing sustainability in international construction projects and beneficial for enhancing project sustainability as there is a huge uncertainty associated with sustainability-related risks.
Buildings, 2020
Selecting the appropriate project delivery method (PDM) is a very significant managerial decision... more Selecting the appropriate project delivery method (PDM) is a very significant managerial decision that impacts the success of construction projects. This paper provides a critical review of related literature on the evolution of project delivery methods, selection methods and selection criteria over the years and their suitability in the construction industry of today’s world. The literature review analysis has concluded that project delivery methods evolve at a slower rate compared to the evolution of the construction industry. The paper also suggests features of an evolved project delivery method that is digitally integrated, people-centered, and sustainability-focused. Moreover, the paper highlights the latest selection criteria such as risk, health and wellbeing, sustainability goals and technological innovations. Furthermore, the paper concluded that advanced artificial intelligence techniques are yet to be exploited to develop a smart decision support model that will assist cl...
2017 ASEE Annual Conference & Exposition Proceedings
He is a certified Project Management Professional (PMP) from the Project Management Institute (PM... more He is a certified Project Management Professional (PMP) from the Project Management Institute (PMI) since 2006. Prior to his academic career, he worked in the construction industry in Greece & Yemen with Consolidated Contractors Company (CCC) and in the US with the Morganti Group Inc. His areas of research and teaching interest are construction & project management, project control and construction contracting. He published over forty research papers in international reputed project management journals and conferences. He was the Interim Head of the Civil Engineering department in 2012-13.
International Journal of Construction Management, 2020
The existing contractor selection models, and specifically the lowest bidder model, do not encour... more The existing contractor selection models, and specifically the lowest bidder model, do not encourage contractors to adopt sustainable construction practices. This article proposes a new bidding mod...
Archives of Civil and Mechanical Engineering, 2020
This paper provides a critical review of the related literature on 3D printing in construction. T... more This paper provides a critical review of the related literature on 3D printing in construction. The paper discusses and evaluates the different 3D printing techniques in construction. The paper also discusses and categorizes the benefits, challenges, and risks of 3D printing in construction. The use of 3D printing technology offers several advantages over traditional methods. However, it comes with its own additional challenges and risks. The main benefits of 3D printing in construction include constructability and sustainability benefits. The challenges are categorized into seven groups. The main challenges, found through the literature, are material related. The most cited challenges are material printability, buildability, and open time. Additionally, scalability, structural integrity, and lack of codes and regulations are frequently cited as major challenges. The additional risks are categorized into seven groups: 3D printing material, 3D printing equipment, construction site, and environment, management, stakeholders, regulatory and economic, and cybersecurity risks. The paper fills a gap in the literature as it addresses a new aspect of 3D printing, which is risk. The paper also provides some insights, recommendations, and future research ideas.
Engineering, Construction and Architectural Management, 2018
Purpose The purpose of this paper is to propose a Non-Linear Integer Programming (NLIP) model tha... more Purpose The purpose of this paper is to propose a Non-Linear Integer Programming (NLIP) model that solves the resource leveling problem while reducing the negative effect of the total float loss on risk. Design/methodology/approach An NLIP model is formulated to solve the resource leveling optimization problem incorporating float loss cost (FLC). The proposed model is implemented using “What’s Best solver” for Excel. The FLC is calculated using the float commodity approach. An example is solved using the proposed model in order to illustrate its applicability. Sensitivity analysis is also performed. Findings The results confirmed that resource leveling reduces the available float of non-critical activities; decreases schedule flexibility and reduces the probability of project completion. The probability of timely completion dropped from 50 percent (for the normal schedule with 32 resource fluctuations) to 13.5 percent for leveled resources with zero fluctuations. Using the proposed ...
International Journal of Construction Management, 2019
International Journal of Construction Management, 2018
Abstract There is a big shift towards sustainable construction projects in the United Arab Emirat... more Abstract There is a big shift towards sustainable construction projects in the United Arab Emirates (UAE). Sustainable construction projects are riskier than traditional projects. The purpose of this paper is to identify and assess the risks in sustainable construction projects in the UAE. This will help project participants to properly manage these risks in their projects. A list of thirty risks was identified based on literature review. These risks were grouped into five categories: management, technical, green team, green materials and regulatory/economic. A survey was then developed and sent to professionals from the UAE. The respondents evaluated each risk in terms of its probability of occurrence and potential impact. Forty-four responses were collected. The thirty risks were ranked based on the risk severity (probability multiplied by impact). The top five risks are shortage of clients’ funding, insufficient or incorrect sustainable design information, design changes, unreasonably tight schedule for sustainable construction and poor scope definition in sustainable construction. Risk identification and assessment are important part of project risk management. This allows for appropriate risk response planning and control.
International Journal of Construction Management, 2016
Claims are inevitable in construction projects and road construction projects in the United Arab ... more Claims are inevitable in construction projects and road construction projects in the United Arab Emirates (UAE) are no exception. A claim is a request for time and/or monetary compensation for damages incurred by any party to the contract. The number and frequency of claims have increased over recent years due to the increase in the size and complexity of these projects. These claims result in cost overruns, schedule delays and adversarial relationships amongst the contracting parties. The objective of this paper is to identify and assess the most frequent causes of claims in road construction projects in the UAE in addition to the root causes that contribute to the occurrence of claims. Sixteen causes were identified through a literature review. A survey was then developed and distributed to construction professionals experienced in claims in road construction projects. Fifty-one surveys were completed. The reasons and their root causes were ranked based on the weighted average of the responses. Variation was identified as the most frequent cause of claims, followed by contractor's delay and inadequate site investigation before bidding. The results show that consultants and clients have strong agreement on the ranking of the claims and weak agreement with the contractors.
Journal of Financial Management of Property and Construction, 2017
Purpose The purpose of this paper is to propose a new framework for time–cost trade-off. The new ... more Purpose The purpose of this paper is to propose a new framework for time–cost trade-off. The new framework provides the optimum time–cost value taking into account the float loss impact. Design/methodology/approach The stochastic framework uses Monte Carlo Simulation to calculate the effect of float loss on risk. This is later translated into an added cost to the trade-off problem. Five examples, from literature, are solved using the proposed framework to test the applicability of the developed framework. Findings The results confirmed the research hypothesis that the new optimum solution will be at a higher duration and cost but at a lower risk compared to traditional methods. The probabilities of finishing the project on time using the developed framework in all five cases were better than those using the classical deterministic optimization technique. Originality/value The objective of time–cost trade-off is to determine the optimum project duration corresponding to the minimum t...
International Journal of Project Organisation and Management, 2014
Managing risk is fundamental to the successful delivery of construction projects. Construction co... more Managing risk is fundamental to the successful delivery of construction projects. Construction companies respond to risks by adopting various risk management practices. There is a need to evaluate these practices in order to identify deficiencies and to identify key barriers impeding the successful implementation of a comprehensive risk management process. A questionnaire was developed and distributed to construction professionals in the UAE. Respondents indicated that they apply risk management processes frequently especially risk identification and quantification. Although most companies employ risk management practices, there is a need to improve certain practices and increase their frequency of use. Some of these practices include using decision trees, planning risk responses and assigning risk response owners. Respondents from international and local companies agreed on the top three barriers to risk management implementation which are managers' understanding of the techniques, finding suitable risk management methods and difficulty in obtaining estimates and assessment of probability.
Journal of Construction Engineering and Management, 2011
Resource leveling aims at minimizing the resource usage fluctuations, which is accomplished by mo... more Resource leveling aims at minimizing the resource usage fluctuations, which is accomplished by moving noncritical activities within their float. The project duration is fixed and is not affected by the leveling. Most of resource leveling techniques assumes that activities cannot be ...
International Journal of Project Management, 2008
This study identifies and assesses the significant risks in the UAE construction industry and add... more This study identifies and assesses the significant risks in the UAE construction industry and addresses their proper allocation. Data were collected through a questionnaire distributed to construction experts. The study reveals that economic risks such as inflation and sudden changes in prices, shortage in material and labor supply are significant. Other significant risks include owner risks such as unrealistic construction schedule, improper intervention and changes in design. Political, social and cultural risks are found to be insignificant. Local and international experts are in agreement as to the ranking of construction risks in the UAE. More risks are allocated to contractors or shared between contractors and owners with only two risks allocated directly to the owners.
Buildings, 2020
Claims and disputes occur frequently in the construction industry between different contracting p... more Claims and disputes occur frequently in the construction industry between different contracting parties, mainly the owner, the designer and the contractor. Consequently, valuable time and a significant amount of money are lost. The United Arab Emirates (UAE) construction industry, one of the most vibrant sectors globally, is experiencing a high level of construction disputes and claims. This paper aims to identify and assess the major causes of disputes in the UAE and weigh the effectiveness of the methods used for their avoidance and resolution. The sources of disputes, and their avoidance/resolution methods, were identified through a comprehensive literature review. A survey was then developed and sent to 150 construction professionals. Fifty-four responses were received and analyzed. The results show that the top five sources of disputes in the UAE are variations initiated by the owner, obtaining permit/approval from the municipality and other governmental authorities, material c...
Collaboration and Integration in Construction, Engineering, Management and Technology, 2020
The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution author... more The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations.
Project delivery method refers to the owners’ approach in organizing the project team that will m... more Project delivery method refers to the owners’ approach in organizing the project team that will manage the entire design and construction process. There are mainly three categories of delivery methods: traditional design-bid-build, design-build and construction management. The choice of the appropriate delivery method is a key decision that has to be made by owners early in the project lifecycle. This decision has a great impact on project success. Through literature review, a comprehensive list of twenty one factors was determined. These factors are grouped into eight categories: time, cost, scope, quality, owner organization, cash flow, project characteristics and risk and relationships factors. A survey was then developed and distributed to construction experts associated with the United Arab Emirates (UAE) construction industry to get their perception as to the importance of these factors. The data was then analyzed and the factors ranked according to their Relative Importance I...
The selected contractor has a big influence on the project and its success. Hence, the selection ... more The selected contractor has a big influence on the project and its success. Hence, the selection of the appropriate contractor is a critical and vital task. Construction Management at Risk (CM@R) is one of the most popular and increasingly adopted delivery methods. The CM@R company is unique because it performs two main tasks: construction management and general contracting. There is a number of models and lists that can be used to select the appropriate contractor when using the traditional design-bid-build and design-build delivery methods. However, there are no models that assist owners in selecting the unique CM@R company. Selecting a CM@R company according to a general contractor factor list can easily mislead the evaluator to choose a wrong contractor. This paper presents the selection factors for the appropriate CM@R company. These factors are generated through extensive literature review. Construction Management at Risk selection factors can be used by owners to evaluate dif...
Since the 1950’s, the use of project scheduling tools and techniques has grown, and continues to ... more Since the 1950’s, the use of project scheduling tools and techniques has grown, and continues to grow, at a rapid pace with the increasing challenges and risks each day. The construction industry is viewed as one of the largest industries in the United Arab Emirates (UAE), yet no clear statistics have traced the use of scheduling tools and techniques in UAE construction projects. The main objective of this paper is to evaluate the application of project scheduling tools and techniques in the UAE construction industry in terms of the use, benefits and barriers. The study was conducted over a sample of 45 respondents. The study shows that the mainly used technique in the UAE construction industry is the Critical Path Method (CPM). The main identified scheduling tools are Microsoft Project and Primavera P3. The results indicate that the scheduling tools and techniques are applied 50-75% of the time mainly due to company requirements and contract requirements. The main identified benefi...
Journal of Financial Management of Property and Construction, 2021
Purpose This paper aims to identify and assess the key criteria for selecting green suppliers in ... more Purpose This paper aims to identify and assess the key criteria for selecting green suppliers in the United Arab Emirates (UAE) construction industry. Design/methodology/approach A total of 20 criteria were identified and shortlisted through an extensive literature review. These criteria were grouped into four categories: technical and commercial bid, company characteristics, environmental and socioeconomic. A questionnaire was then developed and distributed to construction professionals in the UAE. A total of 39 professionals responded to the survey including contractors, consultants, owners and suppliers. The respondents performed pairwise comparisons among the selection criteria. Data was then analyzed using the Expert Choice Software. Findings The research findings highlighted that the technical and commercial bid category was ranked as the most important with a weight of 0.338, followed by socioeconomic, company characteristics and environmental categories weighing 0.239, 0.225...
Sustainable Cities and Society, 2021
Abstract Sustainability-related risks and risk management frameworks have been introduced in the ... more Abstract Sustainability-related risks and risk management frameworks have been introduced in the literature to help project managers identify and manage critical risks influencing project sustainability. Theoretically grounded in the framework of Monte Carlo Simulation, this paper introduces and operationalizes a new process for prioritizing sustainability-related project risks using risk matrix data. Sustainability-related construction project risks have never been assessed relative to different confidence levels across the risk matrix-based exposure zones. The application of the proposed process on the construction projects completed in the United Arab Emirates reveals that the conventional risk prioritization scheme undermines the importance of tail risks (unexpected events), whereas such risks are captured in the proposed process. In contrast to the most critical risks identified using the conventional scheme such as shortage of client’s funding, insufficient or incorrect sustainable design operation, and design changes, the proposed process prioritizes risks such as poor productivity of labor and equipment in sustainable construction, unreasonable tight schedule for sustainable construction, and poor scope definition of sustainable construction. The proposed process is generalizable to prioritizing risks influencing sustainability in international construction projects and beneficial for enhancing project sustainability as there is a huge uncertainty associated with sustainability-related risks.
Buildings, 2020
Selecting the appropriate project delivery method (PDM) is a very significant managerial decision... more Selecting the appropriate project delivery method (PDM) is a very significant managerial decision that impacts the success of construction projects. This paper provides a critical review of related literature on the evolution of project delivery methods, selection methods and selection criteria over the years and their suitability in the construction industry of today’s world. The literature review analysis has concluded that project delivery methods evolve at a slower rate compared to the evolution of the construction industry. The paper also suggests features of an evolved project delivery method that is digitally integrated, people-centered, and sustainability-focused. Moreover, the paper highlights the latest selection criteria such as risk, health and wellbeing, sustainability goals and technological innovations. Furthermore, the paper concluded that advanced artificial intelligence techniques are yet to be exploited to develop a smart decision support model that will assist cl...
2017 ASEE Annual Conference & Exposition Proceedings
He is a certified Project Management Professional (PMP) from the Project Management Institute (PM... more He is a certified Project Management Professional (PMP) from the Project Management Institute (PMI) since 2006. Prior to his academic career, he worked in the construction industry in Greece & Yemen with Consolidated Contractors Company (CCC) and in the US with the Morganti Group Inc. His areas of research and teaching interest are construction & project management, project control and construction contracting. He published over forty research papers in international reputed project management journals and conferences. He was the Interim Head of the Civil Engineering department in 2012-13.
International Journal of Construction Management, 2020
The existing contractor selection models, and specifically the lowest bidder model, do not encour... more The existing contractor selection models, and specifically the lowest bidder model, do not encourage contractors to adopt sustainable construction practices. This article proposes a new bidding mod...
Archives of Civil and Mechanical Engineering, 2020
This paper provides a critical review of the related literature on 3D printing in construction. T... more This paper provides a critical review of the related literature on 3D printing in construction. The paper discusses and evaluates the different 3D printing techniques in construction. The paper also discusses and categorizes the benefits, challenges, and risks of 3D printing in construction. The use of 3D printing technology offers several advantages over traditional methods. However, it comes with its own additional challenges and risks. The main benefits of 3D printing in construction include constructability and sustainability benefits. The challenges are categorized into seven groups. The main challenges, found through the literature, are material related. The most cited challenges are material printability, buildability, and open time. Additionally, scalability, structural integrity, and lack of codes and regulations are frequently cited as major challenges. The additional risks are categorized into seven groups: 3D printing material, 3D printing equipment, construction site, and environment, management, stakeholders, regulatory and economic, and cybersecurity risks. The paper fills a gap in the literature as it addresses a new aspect of 3D printing, which is risk. The paper also provides some insights, recommendations, and future research ideas.
Engineering, Construction and Architectural Management, 2018
Purpose The purpose of this paper is to propose a Non-Linear Integer Programming (NLIP) model tha... more Purpose The purpose of this paper is to propose a Non-Linear Integer Programming (NLIP) model that solves the resource leveling problem while reducing the negative effect of the total float loss on risk. Design/methodology/approach An NLIP model is formulated to solve the resource leveling optimization problem incorporating float loss cost (FLC). The proposed model is implemented using “What’s Best solver” for Excel. The FLC is calculated using the float commodity approach. An example is solved using the proposed model in order to illustrate its applicability. Sensitivity analysis is also performed. Findings The results confirmed that resource leveling reduces the available float of non-critical activities; decreases schedule flexibility and reduces the probability of project completion. The probability of timely completion dropped from 50 percent (for the normal schedule with 32 resource fluctuations) to 13.5 percent for leveled resources with zero fluctuations. Using the proposed ...
International Journal of Construction Management, 2019
International Journal of Construction Management, 2018
Abstract There is a big shift towards sustainable construction projects in the United Arab Emirat... more Abstract There is a big shift towards sustainable construction projects in the United Arab Emirates (UAE). Sustainable construction projects are riskier than traditional projects. The purpose of this paper is to identify and assess the risks in sustainable construction projects in the UAE. This will help project participants to properly manage these risks in their projects. A list of thirty risks was identified based on literature review. These risks were grouped into five categories: management, technical, green team, green materials and regulatory/economic. A survey was then developed and sent to professionals from the UAE. The respondents evaluated each risk in terms of its probability of occurrence and potential impact. Forty-four responses were collected. The thirty risks were ranked based on the risk severity (probability multiplied by impact). The top five risks are shortage of clients’ funding, insufficient or incorrect sustainable design information, design changes, unreasonably tight schedule for sustainable construction and poor scope definition in sustainable construction. Risk identification and assessment are important part of project risk management. This allows for appropriate risk response planning and control.
International Journal of Construction Management, 2016
Claims are inevitable in construction projects and road construction projects in the United Arab ... more Claims are inevitable in construction projects and road construction projects in the United Arab Emirates (UAE) are no exception. A claim is a request for time and/or monetary compensation for damages incurred by any party to the contract. The number and frequency of claims have increased over recent years due to the increase in the size and complexity of these projects. These claims result in cost overruns, schedule delays and adversarial relationships amongst the contracting parties. The objective of this paper is to identify and assess the most frequent causes of claims in road construction projects in the UAE in addition to the root causes that contribute to the occurrence of claims. Sixteen causes were identified through a literature review. A survey was then developed and distributed to construction professionals experienced in claims in road construction projects. Fifty-one surveys were completed. The reasons and their root causes were ranked based on the weighted average of the responses. Variation was identified as the most frequent cause of claims, followed by contractor's delay and inadequate site investigation before bidding. The results show that consultants and clients have strong agreement on the ranking of the claims and weak agreement with the contractors.
Journal of Financial Management of Property and Construction, 2017
Purpose The purpose of this paper is to propose a new framework for time–cost trade-off. The new ... more Purpose The purpose of this paper is to propose a new framework for time–cost trade-off. The new framework provides the optimum time–cost value taking into account the float loss impact. Design/methodology/approach The stochastic framework uses Monte Carlo Simulation to calculate the effect of float loss on risk. This is later translated into an added cost to the trade-off problem. Five examples, from literature, are solved using the proposed framework to test the applicability of the developed framework. Findings The results confirmed the research hypothesis that the new optimum solution will be at a higher duration and cost but at a lower risk compared to traditional methods. The probabilities of finishing the project on time using the developed framework in all five cases were better than those using the classical deterministic optimization technique. Originality/value The objective of time–cost trade-off is to determine the optimum project duration corresponding to the minimum t...
International Journal of Project Organisation and Management, 2014
Managing risk is fundamental to the successful delivery of construction projects. Construction co... more Managing risk is fundamental to the successful delivery of construction projects. Construction companies respond to risks by adopting various risk management practices. There is a need to evaluate these practices in order to identify deficiencies and to identify key barriers impeding the successful implementation of a comprehensive risk management process. A questionnaire was developed and distributed to construction professionals in the UAE. Respondents indicated that they apply risk management processes frequently especially risk identification and quantification. Although most companies employ risk management practices, there is a need to improve certain practices and increase their frequency of use. Some of these practices include using decision trees, planning risk responses and assigning risk response owners. Respondents from international and local companies agreed on the top three barriers to risk management implementation which are managers' understanding of the techniques, finding suitable risk management methods and difficulty in obtaining estimates and assessment of probability.
Journal of Construction Engineering and Management, 2011
Resource leveling aims at minimizing the resource usage fluctuations, which is accomplished by mo... more Resource leveling aims at minimizing the resource usage fluctuations, which is accomplished by moving noncritical activities within their float. The project duration is fixed and is not affected by the leveling. Most of resource leveling techniques assumes that activities cannot be ...
International Journal of Project Management, 2008
This study identifies and assesses the significant risks in the UAE construction industry and add... more This study identifies and assesses the significant risks in the UAE construction industry and addresses their proper allocation. Data were collected through a questionnaire distributed to construction experts. The study reveals that economic risks such as inflation and sudden changes in prices, shortage in material and labor supply are significant. Other significant risks include owner risks such as unrealistic construction schedule, improper intervention and changes in design. Political, social and cultural risks are found to be insignificant. Local and international experts are in agreement as to the ranking of construction risks in the UAE. More risks are allocated to contractors or shared between contractors and owners with only two risks allocated directly to the owners.