The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
Ali Touran - One of the best experts on this subject based on the ideXlab platform.
-
Construction smart forms: An application of information technology to reduce waste by increasing interoperability
ISEC 2011 - 6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Constructi, 2011Co-Authors: Babak J. Fard, Ali TouranAbstract:This article describes a Project that was implemented to demonstrate various characteristics of Construction Smart Forms. The idea is based on the fact that a large amount of data in a construction Project is alphanumerical and is gathered by fillable forms. Building Information Modeling (BIM) has made major improvements in data interoperability for geometrical data and 3D models. But for expanding its reach to contain all information shared in a construction Project during its lifetime, and beyond, it needs to provide standards and solutions for all the data shared in the Projects. eXtended Markup Language (XML) is the most recognized tool for data sharing in Information Technology (IT) industry and must be used alongside Industry Foundation Classes (IFC) to empower BIMfor reaching its full potential. There are efforts underway to develop XML schemas as global standards for data exchanged in construction Projects. The paper explains applications andMethods that were selected from among different available solutions for developing the Smart Form system. A prototype system was implemented on data in a set of fillable forms that were used in selecting the best Project Delivery Method. It is suggested that for reaching the full potential of Construction Smart forms they must be datacentric, dynamic, use standard XML schemas when applicable, use Web Services Definition Language (WSDL) technology when appropriate, and contain rule checking when possible. Adding each of these improvements can make a form more Smart and efficient.
-
selection of Project Delivery Method in transit drivers and objectives
Journal of Management in Engineering, 2011Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran GhavamifarAbstract:This paper describes the results of research on alternative Project Delivery Methods in transit Projects in the United States. The research, sponsored by the Transit Cooperative Research Program, aimed to identify those factors that drive the decision in the choice of Project Delivery Method. A rigorous case study analysis based on on-site structured interviews with the directors of several transit Projects was used to identify decision drivers and the rationale behind the Delivery Method selection decision in transit agencies. The nine case studies conducted in this research represent a cross section of Delivery Methods, including design-bid-build/multiprime, construction manager-at-risk, design/build, and design/build-operate-maintain. The interviewees agreed that the use of alternative Delivery Methods have resulted in savings in schedule and cost for transit agencies. The research also found that achieving aggressive schedule compression is the most influential factor when selecting alternative delive...
-
a system for selecting a Project Delivery Method in us airports
Journal of Airport Management, 2010Co-Authors: Ali Touran, Keith R Molenaar, Douglas D GransbergAbstract:Several types of Project Delivery Methods are available to owners of publicly-funded airport Projects. These Methods include design-bid-build, construction manager-at-risk, and design-build. This paper presents a Methodology for selecting the most appropriate Delivery Method for a given set of conditions. A set of 19 pertinent issues that can affect the choice of Project Delivery Method are identified and described. The paper explains the distinguishing features of airport Projects and combines previous research with the results of extensive interviews with nine US airports to develop a new decision support system. The developed system consists of two tiers. The first tier is a qualitative assessment where the decision maker evaluates the effectiveness of each Delivery Method in dealing with the relevant pertinent issues. This tier will assist agencies in determining if there is a dominant or obvious choice of Project Delivery Method. If at the end of this stage a clear choice is not evident, a second tier is available where a weighted matrix is used to score competing alternatives. This system will also provide a structure for documenting the Project Delivery decision in case the agency needs to explain and justify its decision.
-
Project Delivery Method issues of different transportation modes one size does not fit all
Transportation Research Board 89th Annual MeetingTransportation Research Board, 2010Co-Authors: Douglas D Gransberg, Ali Touran, Keith R Molenaar, Jennifer S ShaneAbstract:Most previous Project Delivery Method research has been concentrated on a single mode of transportation. Thus, it is problematic to generalize research results from one mode to another. This paper combines and synthesizes the output of three separate Project Delivery Method research Projects for highway, transit and airport transportation modes. Each study delved into the issues transportation agencies considered when selecting a Project Delivery Method for a transportation Project. The analysis finds that each mode of transportation views the various Project Delivery Methods in a different manner. It concludes that the Methodology used to select a Project Delivery Method must be grounded in the business and regulatory environment of the specific mode and that attempting to generalize the findings of a study of one mode to another is not appropriate
-
decision support system for selection of Project Delivery Method in transit
Transportation Research Record, 2009Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran GhavamifarAbstract:A decision support system was developed to help transit agencies evaluate and choose the most appropriate Project Delivery Method for their capital Projects. The system considers the traditional design-bid-build, construction manager-at-risk, design-build, and design-build-operate-maintain Delivery Methods. A set of 24 pertinent issues that can affect the choice of Project Delivery Method are identified and described. The described decision support system consists of two distinct tiers. The first tier is a qualitative assessment in which the decision maker evaluates the effectiveness of each Delivery Method for dealing with the relevant pertinent issues. This tier will help agencies determine if there is a dominant or obvious choice of Project Delivery Method. If at the end of this stage a clear choice is not evident, the user will move to the second tier, where a weighted matrix is used to score competing alternatives. The system will also provide a structure for documenting the Project Delivery decision...
Douglas D Gransberg - One of the best experts on this subject based on the ideXlab platform.
-
Comparing Construction Manager–General Contractor and Federal Early Contractor Involvement Project Delivery Methods
Transportation Research Record, 2016Co-Authors: Douglas D GransbergAbstract:Past studies of the construction manager–general contractor (CMGC) Project Delivery Method have focused on its use by state and municipal departments of transportation. The literature also includes the approach to the CMGC Delivery Method based on Federal Acquisition Regulation (FAR) termed early contractor involvement (ECI), which the literature classifies as merely a different term for CMGC. The desire to use CMGC Project Delivery by the Federal Lands Highway Divisions stimulated a deeper study of the restrictions placed on federal agencies by the FAR and found that although CMGC and ECI Project Delivery are indeed similar, they are not identical. The findings of that study are reported. A comparative analysis of the two Project Delivery models is presented, and it is found that ECI Delivery is substantially different from CMGC Delivery because of FAR-based limitations on preconstruction services and pricing Methodology. It is concluded that the use of an incentive–disincentive scheme and the bidding of...
-
critical analysis of value added by independent cost estimate consultant to construction manger general contractor Project Delivery Method
Transportation Research Board 92nd Annual MeetingTransportation Research Board, 2013Co-Authors: Jeanna Schierholz, Douglas D GransbergAbstract:The Construction Manager/General Contractor (CMGC) Project Delivery Method is an emerging Project Delivery Method in the transportation industry. As part of its Every Day Counts (EDC) program, the Federal Highway Administration (FHWA) is promoting the use of CMGC through Peer Exchanges. One recurring theme of the Peer Exchange was the fact that value was added to a construction Project during the preconstruction phase by the early involvement of the contractor and the Independent Cost Estimate (ICE) consultant. A content analysis of the presentations given at the most recent Peer Exchange in Boston, Massachusetts, along with four case studies from ICE consultants were reviewed along with literature on the topic to determine the extent of the value added to the CMGC process by involving the ICE consultant.
-
selection of Project Delivery Method in transit drivers and objectives
Journal of Management in Engineering, 2011Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran GhavamifarAbstract:This paper describes the results of research on alternative Project Delivery Methods in transit Projects in the United States. The research, sponsored by the Transit Cooperative Research Program, aimed to identify those factors that drive the decision in the choice of Project Delivery Method. A rigorous case study analysis based on on-site structured interviews with the directors of several transit Projects was used to identify decision drivers and the rationale behind the Delivery Method selection decision in transit agencies. The nine case studies conducted in this research represent a cross section of Delivery Methods, including design-bid-build/multiprime, construction manager-at-risk, design/build, and design/build-operate-maintain. The interviewees agreed that the use of alternative Delivery Methods have resulted in savings in schedule and cost for transit agencies. The research also found that achieving aggressive schedule compression is the most influential factor when selecting alternative delive...
-
impact of Project Delivery Method on final Project quality perceptions in the transportation industry
Transportation Research Board 90th Annual MeetingTransportation Research Board, 2011Co-Authors: Jennifer S Shane, Douglas D GransbergAbstract:Recent Transportation Research Board-sponsored studies on Project Delivery Methods in airport, highway, and transit agencies found that many agencies have gained experience with alternative Project Delivery Methods (PDM) and now consciously pair a transportation Project’s requirements with an appropriate Delivery Method. These agencies have experienced successful Projects using traditional Design-Bid-Build (DBB), as well as the integrated Methods, Construction Manager-at-Risk (CMR), and Design-Build (DB). This paper combines the results of the studies in the three modes and seeks to differentiate experienced practitioners’ perceptions in 19 agencies of how Project Delivery Method choice impacts design and construction quality. Integrated Project Delivery Methods’ major advantage was found to lie in the collaboration between the designer and the builder during the preconstruction phase. Preconstruction collaboration does not happen automatically by merely deciding to use integrated Delivery. This paper reports the results of structured interviews on this topic regarding those elements of preconstruction collaboration which were seen to have enhanced transportation Project quality. It concludes that the most important factors are the qualifications and experience of the team and the ability to get early constructor involvement in the design process. It also found that the use of guaranteed maximum price rather than lump sum payment provisions in CMR and DB Projects was perceived to maximize the benefits associated with these Project Delivery Methods.
-
a system for selecting a Project Delivery Method in us airports
Journal of Airport Management, 2010Co-Authors: Ali Touran, Keith R Molenaar, Douglas D GransbergAbstract:Several types of Project Delivery Methods are available to owners of publicly-funded airport Projects. These Methods include design-bid-build, construction manager-at-risk, and design-build. This paper presents a Methodology for selecting the most appropriate Delivery Method for a given set of conditions. A set of 19 pertinent issues that can affect the choice of Project Delivery Method are identified and described. The paper explains the distinguishing features of airport Projects and combines previous research with the results of extensive interviews with nine US airports to develop a new decision support system. The developed system consists of two tiers. The first tier is a qualitative assessment where the decision maker evaluates the effectiveness of each Delivery Method in dealing with the relevant pertinent issues. This tier will assist agencies in determining if there is a dominant or obvious choice of Project Delivery Method. If at the end of this stage a clear choice is not evident, a second tier is available where a weighted matrix is used to score competing alternatives. This system will also provide a structure for documenting the Project Delivery decision in case the agency needs to explain and justify its decision.
Kamran Ghavamifar - One of the best experts on this subject based on the ideXlab platform.
-
selection of Project Delivery Method in transit drivers and objectives
Journal of Management in Engineering, 2011Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran GhavamifarAbstract:This paper describes the results of research on alternative Project Delivery Methods in transit Projects in the United States. The research, sponsored by the Transit Cooperative Research Program, aimed to identify those factors that drive the decision in the choice of Project Delivery Method. A rigorous case study analysis based on on-site structured interviews with the directors of several transit Projects was used to identify decision drivers and the rationale behind the Delivery Method selection decision in transit agencies. The nine case studies conducted in this research represent a cross section of Delivery Methods, including design-bid-build/multiprime, construction manager-at-risk, design/build, and design/build-operate-maintain. The interviewees agreed that the use of alternative Delivery Methods have resulted in savings in schedule and cost for transit agencies. The research also found that achieving aggressive schedule compression is the most influential factor when selecting alternative delive...
-
decision support system for selection of Project Delivery Method in transit
Transportation Research Record, 2009Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran GhavamifarAbstract:A decision support system was developed to help transit agencies evaluate and choose the most appropriate Project Delivery Method for their capital Projects. The system considers the traditional design-bid-build, construction manager-at-risk, design-build, and design-build-operate-maintain Delivery Methods. A set of 24 pertinent issues that can affect the choice of Project Delivery Method are identified and described. The described decision support system consists of two distinct tiers. The first tier is a qualitative assessment in which the decision maker evaluates the effectiveness of each Delivery Method for dealing with the relevant pertinent issues. This tier will help agencies determine if there is a dominant or obvious choice of Project Delivery Method. If at the end of this stage a clear choice is not evident, the user will move to the second tier, where a weighted matrix is used to score competing alternatives. The system will also provide a structure for documenting the Project Delivery decision...
-
A Guidebook for Selecting Airport Capital Project Delivery Methods - A Guidebook for Selecting Airport Capital Project Delivery Methods
ACRP Report, 2009Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Payam Bakhshi, Kamran GhavamifarAbstract:This guidebook describes various Project Delivery Methods for major airport capital Projects. The guidebook also evaluates the impacts, advantages, and disadvantages of these various Project Delivery Methods. The Project Delivery Methods discussed include design-bid-build (DBB), construction manager at risk (CMR), and design-build (DB). The guidebook offers a two-tiered Project Delivery selection framework that may be used by owners of airport Projects to evaluate the pros and cons of each Delivery Method and select the most appropriate Method for their Project. Tier 1 is an analytical Delivery decision approach that is designed to help the user understand the attributes of each Project Delivery Method and whether the Delivery Method is appropriate for their specific circumstance. Tier 2 uses a weighted-matrix Delivery decision approach that allows users to prioritize their objectives and, based on the prioritized objectives, select the Delivery Method that is best suited for their Project. The report will be helpful to airports with determining the most appropriate Project Delivery Methods (e.g., DBB, DB, or CMR) for various types of airport capital Projects.
-
Owner's Risks versus Control in Transit Projects
Journal of Management in Engineering, 2009Co-Authors: Kamran Ghavamifar, Ali TouranAbstract:This paper studies the characteristics of different Project Delivery Methods in public transit Projects with respect to the owner’s Project control and its share in Project risks. The most appropriate Project Delivery Method is selected early in the Project life cycle based on a number of objectives and criteria set forth by the owner. The ability to manage risk effectively and owner’s control over the Project are among the most important factors for selecting the Delivery Method. These two factors are highly interrelated. This paper discusses the interaction of risk and control in the context of the Project Delivery Method. Results of several interviews with transit authorities are used to ensure the validity of findings. This paper shows that higher control over the Project is achieved only if the owner is willing to accept more risks. In other words, there is no Delivery Method that allows the owner to enjoy high levels of control and minimum risk simultaneously.
-
A Guidebook for the Evaluation of Project Delivery Methods - A Guidebook for the Evaluation of Project Delivery Methods
2009Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran Ghavamifar, D J Mason, Lee A FithianAbstract:This guidebook describes various Project Delivery Methods for major transit capital Projects. The guidebook also includes an evaluation of the impacts, advantages, and disadvantages of including operations and maintenance as a component of a contract for a Project Delivery Method. The Project Delivery Methods discussed are design-bid-build (DBB), construction manager at risk (CMR), design-build (DB), and design-build-operate-maintain (DBOM). The guidebook offers a three-tiered Project Delivery selection framework that may be used by owners of transit Projects to evaluate the pros and cons of each Delivery Method and select the most appropriate Method for their Project. Tier 1 is a qualitative approach that allows the user to document the advantages and disadvantages of each competing Delivery Method. The user can then review the results of this analysis and select the best Delivery Method. If, at the conclusion of this analysis, a clear option does not emerge, the user then moves on to Tier 2. Tier 2 is a weighted-matrix approach that allows the user to quantify the effectiveness of competing Delivery Methods and select the approach that receives the highest score. The third tier uses principles of risk analysis to evaluate Delivery Methods. The selection framework may also be useful as a means to document the decision in the form of a Project Delivery Decision Report. The guidebook will be helpful to transit general managers, policy-makers, procurement officers, planners, and consultants in evaluating and selecting the appropriate Project Delivery Method for major transit capital Projects.
Keith R Molenaar - One of the best experts on this subject based on the ideXlab platform.
-
Risk-Based Project Delivery Selection Model for Highway Design and Construction
Journal of Construction Engineering and Management-asce, 2015Co-Authors: Dai Q Tran, Keith R MolenaarAbstract:AbstractProject-Delivery Methods allocate risk for design and construction between contractual parties. State departments of transportation (DOTs) using federal funds employ three primary Project-Delivery Methods: (1) design-bid-build (D-B-B); (2) design-build (D-B); and (3) construction manager/general contractor (CM/GC). Because the choice of a Project-Delivery Method is best made early in the Project-development process, it is a complex decision that is fraught with risk and uncertainty. This paper presents a risk-based modeling Methodology to evaluate and quantify the potential differences in Project cost attributable to the selection of a Project-Delivery Method. The risk-based model consists of (1) an input structure of assessment and evaluation of Delivery-risk factors; (2) a computational-modeling structure for calculating costs; and (3) an output structure to communicate model results and implementation. The assessment and evaluation process determines the risks that are incorporated into the del...
-
Municipal Water/Wastewater Project Delivery Performance Comparison
Journal of Management in Engineering, 2013Co-Authors: Jennifer S Shane, Susan M. Bogus, Keith R MolenaarAbstract:AbstractOwners of water/wastewater facilities can choose from several Project Delivery Methods, including the traditional design-bid-build Method or an alternative design-build Method. When choosing a Project Delivery Method, the owner should consider both the Project goals as well as the performance of different Project Delivery Methods. Detailed data on Project Delivery performance allow owners to match Project goals, such as time savings, with Project Delivery Methods. Detailed data on Project Delivery performance do not currently exist for the water/wastewater sector. Through a survey of water/wastewater facility owners, data were collected on 31 design-build Projects and sixty-nine design-bid-build Projects. A statistical analysis of the data determined that schedule growth for design-build Projects was half that of design-bid-build Projects; more design-build Projects finished at or below budget; and both Project Delivery Methods produced Projects of comparable quality. Although this is the first st...
-
critical risk factors in Project Delivery Method selection for highway Projects
Construction Research Congress 2012American Society of Civil Engineers, 2012Co-Authors: Dai Q Tran, Keith R MolenaarAbstract:Selecting an appropriate Project Delivery Method is a complex decision-making process due to risks and uncertainties. At the time of the decision, the owner and stakeholders often have little information and the Project plans are not detailed enough to make a judgment about the Project with certainty of outcomes. This paper examines 39 risk factors related to the Project Delivery selection process. These risk factors were identified through completed cost and schedule risk analysis on more than $100 million of highway Projects. A questionnaire was developed to collect the data a cross section of three Delivery Methods, including design-bid-build, designbuild, and construction manager/general contractor. Experts with an average of 25 years of related experience were invited to participate in the survey. The results indicate that the four risk factors that have most influence to all three Delivery Methods are: unexpected utility encounter; third-party delays during construction; geotechnical investigation; and delays in reviewing and obtaining environmental approvals. The research identified five other risk factors that have varying impacts on Project Delivery selection constructability of design; Delivery schedule; railroad agreements; obtaining other agency approvals; and scope definition. This study also discusses the pertinent findings and rationale behind the critical risk factors.
-
selection of Project Delivery Method in transit drivers and objectives
Journal of Management in Engineering, 2011Co-Authors: Ali Touran, Douglas D Gransberg, Keith R Molenaar, Kamran GhavamifarAbstract:This paper describes the results of research on alternative Project Delivery Methods in transit Projects in the United States. The research, sponsored by the Transit Cooperative Research Program, aimed to identify those factors that drive the decision in the choice of Project Delivery Method. A rigorous case study analysis based on on-site structured interviews with the directors of several transit Projects was used to identify decision drivers and the rationale behind the Delivery Method selection decision in transit agencies. The nine case studies conducted in this research represent a cross section of Delivery Methods, including design-bid-build/multiprime, construction manager-at-risk, design/build, and design/build-operate-maintain. The interviewees agreed that the use of alternative Delivery Methods have resulted in savings in schedule and cost for transit agencies. The research also found that achieving aggressive schedule compression is the most influential factor when selecting alternative delive...
-
a system for selecting a Project Delivery Method in us airports
Journal of Airport Management, 2010Co-Authors: Ali Touran, Keith R Molenaar, Douglas D GransbergAbstract:Several types of Project Delivery Methods are available to owners of publicly-funded airport Projects. These Methods include design-bid-build, construction manager-at-risk, and design-build. This paper presents a Methodology for selecting the most appropriate Delivery Method for a given set of conditions. A set of 19 pertinent issues that can affect the choice of Project Delivery Method are identified and described. The paper explains the distinguishing features of airport Projects and combines previous research with the results of extensive interviews with nine US airports to develop a new decision support system. The developed system consists of two tiers. The first tier is a qualitative assessment where the decision maker evaluates the effectiveness of each Delivery Method in dealing with the relevant pertinent issues. This tier will assist agencies in determining if there is a dominant or obvious choice of Project Delivery Method. If at the end of this stage a clear choice is not evident, a second tier is available where a weighted matrix is used to score competing alternatives. This system will also provide a structure for documenting the Project Delivery decision in case the agency needs to explain and justify its decision.
Jiyong Ding - One of the best experts on this subject based on the ideXlab platform.
-
selection of construction Project Delivery Method based on value added analysis a theoretical framework
International Conference on Construction and Real Estate Management 2013, 2013Co-Authors: Zhuofu Wang, Daoguan Wang, Gaosheng Yang, Jiyong DingAbstract:As an alternative Project Delivery Method (PDM) to the traditional Design-Build-Bid (DBB), Design-Build (DB) has seen expanded application in construction industry for two decades. Up to now, it has been a mainstream Delivery Method for construction Projects. However, it does not mean that DB is suitable for all Projects. It is necessary to make a rational decision for the application of DB in a specific Project according to its characteristics. This paper studies the selection of Project Delivery Methods between DB and DBB from perspective of Value-Added. With DBB as the comparison object, this study analyzes the Value-Added advantages of DB, including integration of design and construction, single contract relationship etc., and discusses the main Value-Added ways of DB. Taking into account the feature that Project production and transaction are interlaced with each other, this paper then analyzes the main factors influencing the Value-Added of DB versus DBB, as well as the impact features of these factors on various Value-Added ways based on Project transaction element analysis. Value-Added analysis for DB versus DBB is carried out, and the estimation Method of the Value-Added generated from all kinds of ways is discussed. Besides, the decision-making Method is put forward for the adoption of DB.
