scholarly journals Delay Impact Analysis Method for Lost Productivity in Construction Projects

2011 ◽  
Author(s):  
Jyh-Bin Yang ◽  
Kuei-Mei Huang ◽  
Chang-Hung Lee ◽  
Sheue-Meei Chen
Keyword(s):  
Construction Projects ◽  
Impact Analysis ◽  
Analysis Method ◽  
Lost Productivity

Quantifying costs of the productivity loss due to schedule changes in construction projects

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jae-Seob Lee
Keyword(s):  
Construction Projects ◽  
Design Methodology ◽  
Impact Analysis ◽  
Productivity Loss ◽  
Content Type ◽  
Cost Impact ◽  
Analysis Technique ◽  
Lost Productivity ◽  
Change Order ◽  
Practical Implications

PurposeThe purpose of the paper is to develop a method to integrate the schedule-based analysis with a productivity-based analysis to prove and support the result of the damages calculation.Design/methodology/approachIn this paper, a “cost and schedule impact integration” (CSI2) model is proposed to objectively show and estimate lost productivity due to changes in construction projects.FindingsA schedule-based analysis to include separate tracking of change order costs can be used to predict productivity due to the delay and disruption; changes in construction projects almost always result in delay and disruption. However, the schedule-based analysis needs to be integrated with a productivity-based analysis to prove and support the result of the damages calculation.Practical implicationsThe results of this study expand upon construction practices for proving and quantifying lost productivity due to changes in construction projects.Originality/valueThe contribution of the paper is summarized as the introduction of a “schedule impact analysis” into a “cost impact analysis” technique to assess the damages, as well as to demonstrate the labor productivity impact due to delay and disruption in construction projects.

An environmental impact analysis method of machine-tool cutting units based on LCA

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Junli Shi ◽  
Junyu Hu ◽  
Mingyang Ma ◽  
Huaizhi Wang
Keyword(s):  
Environmental Impact ◽  
Machine Tool ◽  
Energy Demand ◽  
Impact Analysis ◽  
Primary Energy ◽  
Analysis Method ◽  
Environmental Impact Analysis ◽  
Content Type ◽  
Primary Energy Demand ◽  
Tool Cutting

Purpose The purpose of this paper is to present a method for the environmental impact analysis of machine-tool cutting, which enables the detailed analysis of inventory data on resource consumption and waste emissions, as well as the quantitative evaluation of environmental impact. Design/methodology/approach The proposed environmental impact analysis method is based on the life cycle assessment (LCA) methodology. In this method, the system boundary of the cutting unit is first defined, and inventory data on energy and material consumptions are analyzed. Subsequently, through classification, five important environmental impact categories are proposed, namely, primary energy demand, global warming potential, acidification potential, eutrophication potential and photochemical ozone creation potential. Finally, the environmental impact results are obtained through characterization and normalization. Findings This method is applied on a case study involving a machine-tool turning unit. Results show that primary energy demand and global warming potential exert the serious environmental impact in the turning unit. Suggestions for improving the environmental performance of the machine-tool turning are proposed. Originality/value The environmental impact analysis method is applicable to different machine tools and cutting-unit processes. Moreover, it can guide and support the development of green manufacturing by machinery manufacturers.

scholarly journals Finite Element Analysis of Foundation Pile Anchor Support System

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Zhenli Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Construction Projects ◽  
Analysis Method ◽  
Support Structure ◽  
Foundation Pit ◽  
Element Analysis ◽  
High Rise ◽  
Finite Element Analysis Method ◽  
Foundation Pile

With the continuous development of urban construction projects in HebeiProvince, the rise and development of high-rise buildings and undergroundengineering, the design and research of foundation pit support structure has become more and more important. The design of the foundation pit support structure directly affects the settlement and position changes of the building itself and the surrounding stratum. In this paper, the characteristics of foundation pit support are analyzed, and the related theories of finite element analysis method are introduced. Combined with the actual situation of Hebei Province, the finite element analysis method is used to simulate the construction method of foundation pile anchor support structure system. The design was analyzed and studied.

scholarly journals An empirical study of the complexity of requirements management in construction projects

2014 ◽  
Vol 21 (5) ◽  
pp. 505-531 ◽  
Author(s):  
Abdou Karim Jallow ◽  
Peter Demian ◽  
Andrew N. Baldwin ◽  
Chimay Anumba
Keyword(s):  
Construction Projects ◽  
Impact Analysis ◽  
Current Approach ◽  
Facilities Management ◽  
Content Type ◽  
Management Framework ◽  
Engineering Construction ◽  
Depth Study ◽  
Major Factors

Purpose – The purpose of this paper is to investigate in-depth the current approach of managing client requirements in construction and to highlight the significant factors, which contribute to the complexity of managing the requirements in order to define a better approach. Design/methodology/approach – A case study of a leading international global built asset and engineering consultancy organization was conducted over two years. The case study was conducted principally using semi-participant observations supplemented with other qualitative data collection methods (i.e. interviews, questionnaires and document analysis). Thematic analysis was used to analyze the data. Findings – The results highlight major factors associated with the complexity of managing client requirements information, which include: mechanisms for documentation, storage and access, distribution of requirements information between stakeholders and across lifecycle phases of a project, traceability management and the provision of effective change management incorporating dependency checking and impact analysis. Research limitations/implications – The main limitation of the research is the use of an in-depth study of a single organization, which applied the same project management method across all the projects they managed. Further work is planned to develop the proposed framework fully, and develop a software platform to operationalize and evaluate its industrial applicability with construction projects. Practical implications – The implications of this research is that a better approach to managing requirements information is needed, which will facilitate the design, construction and operations of buildings within budget and time. An integrated framework and an associated tool are suggested to implement the approach. Originality/value – This study identifies major research gaps and problems in the architecture, engineering, construction and facilities management industry; proposes and presents Electronic Requirements Information Management framework to facilitate lifecycle management of the requirements.

scholarly journals An Analysis of Construction Failure Factors to Stakeholder Coordinating Performance in the Finishing Phase of High-Rise Building Projects

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Viet T. Nguyen ◽  
Sy T. Do ◽  
Nhat M. Vo ◽  
Thu A. Nguyen ◽  
Son V. H. Pham
Keyword(s):  
Factor Analysis ◽  
Construction Projects ◽  
Project Planning ◽  
Analysis Method ◽  
Building Projects ◽  
High Rise ◽  
High Rise Building ◽  
Building Project ◽  
Construction Works ◽  
Failure Factors

A poorly coordinated performance among stakeholders in the finishing phase can impair the performance of a high-rise building project. Therefore, it is necessary to analyze construction failure factors (CFFs) to stakeholder coordinating performance (SCP) in the finishing phase of high-rise building projects and to uncover their underlying relationships. CFFs to SCP in construction projects, especially in the finishing phase of high-rise building projects, have not yet been discovered. The study identified 30 CFFs to the SCP and ranked them according to the perspective of the stakeholders, including owners/consultants and contractors/subcontractors. Additionally, four factors of the CFFs, namely, traditional adversarial relationship, poor project planning and organization, incompetent parties, and delays of parties toward construction works were extracted by the factor analysis method. This study fills the gap in knowledge related to the coordination performance in construction projects. The findings could help stakeholders to enhance their coordinating performance in high-rise building projects.

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