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Causes,Effects,and Control Measures of construction change orders in the U.S.

Journal of Civil Engineering and Architecture 2023年第2期17卷 57-72页

作者： Ahmed Redha Gheraba Clifford B.Fedler Debajyoti Pati Marcelo Schmidt Mukaddes Darwish Ali Nejat Bill Wade Department of Civil Environmentaland Construction EngineeringTexas Tech UniversityBox 41023.LubbockTX 79409USA Facilities Planningand ManagementSouthern Methodist University6116 N.Central Expressway Ste 808.Dallas TX 75206USA

change orders have a significant impact on many aspects of construction *** are known to be the primary cause of litigation in the construction *** orders are almost inevitable due to the uniqueness of each project from many perspectives,such as the type of building,complexity of the design,human factors,and the available *** orders are the formal mechanism to implement design changes during the execution *** changes are usually the outcome of lack of visualization by the owner,misunderstanding,miscommunication between different parties involved in the project,shortage in resources,and other *** research aims to investigate and rank causes,effects,and control measures of change orders in the construction industry in the *** research presents the results of a questionnaire surveying owners,contractors,and consultants.A total of 123 industry professionals in the Architecture,Engineering,and construction(AEC)field,with either significant or final decision-making authority on reviewing,issuing,and approving change orders responded to the *** indicated that owners are the primary source followed by consultants and contractors,*** of the more important control measures identified in this research are collaboration and visualization technologies.

关键词： construction change orders architectural visualization decision making process construction management construction technology BIM interior environmental design virtual reality

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A Comparative Analysis of Visualization Methods in Architecture:Employing Virtual Reality to Support the Decision-Making Process in the Architecture,Engineering,and construction Industry

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Journal of Civil Engineering and Architecture 2023年第2期17卷 73-89页

作者： Ahmed Redha Gheraba Debajyoti Pati Clifford B.Fedler Marcelo Schmidt Michael S.Molina Ali Nejat Muge Mukaddes Darwish Department of Civil Environmentaland Construction EngineeringTexas Tech UniversityBox 41023.LubbockTX 79409USA Facilities Planningand ManagementSouthern Methodist University6116 N.Central Expressway Ste 808.Dallas TX 75206USA

The design process of the built environment relies on the collaborative effort of all parties involved in the *** the design phase,owners,end users,and their representatives are expected to make the most critical design and budgetary decisions-shaping the essential traits of the project,hence emerge the need and necessity to create and integrate mechanisms to support the decision-making *** decisions should not be based on assumptions,past experiences,or *** example of the numerous problems that are a result of uninformed design decisions is“change orders”,known as the deviation from the original scope of work,which leads to an increase of the overall cost,and changes to the construction schedule of the *** long-term aim of this inquiry is to understand the user’s behavior,and establish evidence-based control measures,which are actions and processes that can be implemented in practice to decrease the volume and frequency of the occurrence of change *** current study developed a foundation for further examination by proposing potential control measures,and testing their efficiency,such as integrating Virtual Reality(VR).The specific aim was to examine the effect of different visualization methods(i.e.,VR *** drawings)on,(1)how well the subjects understand the information presented about the future/planned environment;(2)the subjects’perceived confidence in what the future environment will look like;(3)the likelihood of changing the built environment;(4)design review time;and(5)accuracy in reviewing and understanding the design.

关键词： Virtual reality construction change orders architectural visualization decision making process construction management construction technology interior environmental design

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