scholarly journals 3d/4d Visualization Framework for Modelling Off-Site Productivity of Modular Construction Housing

2016 ◽  
Author(s):  
Jad Jureidini ◽  
Mona Afifi ◽  
Rita Zhang ◽  
Mohamed Al-Hussein
Keyword(s):  
Information Sharing ◽  
Construction Industry ◽  
3D Visualization ◽  
Project Team ◽  
Modular Construction ◽  
Site Productivity ◽  
Diverse Range ◽  
Manufacturing Facility ◽  
Production Improvement

Construction, as the process of constructing a building, has diverse range of available software tools which have been developed to support modelling operations, tasks, and processes in the construction industry. 3D visualization as a modelling tool has been widely used to improve modular and off-site construction activities; it allows for seamless information sharing and collaboration among project stakeholders, and also provides opportunities for improvements suggested by the project team. This paper presents a framework for modelling the off-site modular construction of housing at the Kent Homes manufacturing facility through 3D/4D visualization. A case study is represented to illustrate the potential for production improvement.

scholarly journals 4D visualization to bridge the knowing-doing gap in megaprojects: an Australian case study

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Abhijnan Datta ◽  
Johan Ninan ◽  
Shankar Sankaran
Keyword(s):  
Construction Industry ◽  
Project Team ◽  
Decision Makers ◽  
Construction Process ◽  
Critical Part ◽  
Safety Program ◽  
Performance Improvements ◽  
Australian Case

The literature on megaprojects are oriented towards ‘knowing’ the problems and ‘knowing’ the solutions, and there is a dearth in literature aimed at explaining strategies adopted in ‘doing’ or implementing that knowledge. Particularly, the literature highlights communication as important as part of the ‘knowing,’ while there is a gap in ‘doing,’ as performance improvements are still not evident. This research aims to explore how this knowing-doing gap in the communication of risk information was addressed by using 4D visualization. This article discusses the vent facility of a megaproject in Australia as a case study to illustrate the innovation. The 4D model developed for the facility helped the project team to visualize the construction of a critical part of the project, discuss the construction methodology, identify the risks in the construction process and persuade the non-technical decision-makers of the project to take appropriate action. The risks identified through the visualization covered safety, program, and interface risks. This study offers insights into the role of visualization in bridging the knowing-doing gap in the construction industry in the context of a megaproject.

scholarly journals Risk Mitigation through Tolerance Strategies for Design in Modularization

2015 ◽  
pp. 22-29
Author(s):  
Yasaman Shahtaheri ◽  
Christopher Rausch ◽  
Jeffrey West ◽  
Carl Haas ◽  
Mohammad Nahangi
Keyword(s):  
Construction Industry ◽  
Risk Mitigation ◽  
Risk Averse ◽  
Trial And Error ◽  
Modular Construction ◽  
Tolerance Strategy ◽  
Project Costs ◽  
Tolerance Control ◽  
Tolerance Management

Current approaches for solving tolerance-related issues in modular construction consist of trial and error tactics, which are inefficient, time-consuming and not risk-averse. Although tolerance management is not new to the construction industry, tolerance issues are usually more problematic for module interfacing and transportation in modular construction. This paper introduces a framework for the development of tolerance strategies for mitigating risks in modular construction systems. Risks affecting specific types of modular projects were investigated and developed into a comprehensive tolerance strategy, which was then validated through a case study of an industrial pipe chassis. The proposed methodology may be more effective than the conventional approach for tolerance definition (i.e., trial and error methods), and has the potential to eliminate rework, decrease project costs and reduce delays experienced in modularization by providing a range of pareto-optimal design solutions for “strict” to “loose” tolerance control with respect to the hypothesized costs and risks.

scholarly journals Boosting project outcomes through goal alignment: a case study of Vietnam

2014 ◽  
Vol 14 (2) ◽  
pp. 73-86 ◽  
Author(s):  
Florence Yean Yng Ling ◽  
Mai Bich Tram Hien
Keyword(s):  
Construction Industry ◽  
Client Satisfaction ◽  
Effective Communication ◽  
Project Team ◽  
Goal Alignment ◽  
Team Members ◽  
Performance Quality ◽  
Project Outcomes ◽  
Goals And Objectives

Goal alignment among members of a project team is important so that individual team members can work towards common project outcomes.  This study aims to identify effective goal alignment practices to improve construction project outcomes in Vietnam. With the aid of a survey questionnaire, data were collected from practitioners in Vietnam’s construction industry. The overall results show that although there is significant schedule overrun, projects in Vietnam are generally completed within budget.  These projects also have significantly good quality and client satisfaction.  The results show that goal alignment practices relating to having shared objectives, effective communication, flexibility, and fairness are significantly correlated with schedule performance, quality, and client satisfaction.  It is recommended that project team members share, align and adjust their goals and objectives in order to achieve a better schedule outcome.  Effective communication of problems pertaining to delivery and quality may lead to better client satisfaction.  It is also recommended that consultants and contractors make adjustments and customize their products to derive higher quality and client satisfaction.  Clients should also be fair in sharing project benefits and valuing variations.  

scholarly journals Planning of modular construction manufacturing plant layouts using non-linear optimization

2017 ◽  
Author(s):  
Chelsea Ritter ◽  
Mohamed Al-Hussein
Keyword(s):  
Construction Industry ◽  
Production Line ◽  
Linear Optimization ◽  
Optimal Number ◽  
Modular Construction ◽  
Layout Problem ◽  
Manufacturing Facility ◽  
Reduced Gradient ◽  
Generalized Reduced Gradient ◽  
The Cost

The layout of a manufacturing facility has a significant impact on its productivity and effectiveness, as evidenced by the large amount of research surrounding the facility layout problem and optimization of the solution. In the continually evolving modular construction industry, the solution to this problem will change as often as any smaller adjustment is made to the production line. Because of this continual evolution, it is not possible to continuously change the layout, as this would quickly become prohibitive because of the cost and the need to stop production. This paper presents an optimization of the number of stations per department using the generalized reduced gradient (GRG) optimization algorithm to balance the production line. The benefit of using this algorithm is that it presents the near optimal number of stations in each department and allows for quick modifications to achieve the feasible number of stations in the ever-changing environment.

scholarly journals A Case Study of a Negotiated Tender within a Small-to-Medium Construction Contractor: Modelling Project Cost Variance

Buildings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 260
Author(s):  
James Ellis ◽  
David John Edwards ◽  
Wellington Didibhuku Thwala ◽  
Obuks Ejohwomu ◽  
Ernest Effah Ameyaw ◽  
...  
Keyword(s):  
Construction Industry ◽  
Study Data ◽  
Review Literature ◽  
Third Party ◽  
Open Book ◽  
Competitive Tendering ◽  
Construction Contractor ◽  
The Uk ◽  
Insight Into

This research explores the failure of competitively tendered projects in the UK construction industry to procure the most suited contractor(s) to conduct the works. Such work may have equal relevance for other developed nations globally. This research seeks to teach clients and their representatives that “lowest price” does not mean “best value”, by presenting a case study of a successfully negotiated tender undertaken by a small-to-medium enterprise (SME) contractor; SME studies are relatively scant in academic literature. By applying the “lessons learnt” principle, this study seeks to improve future practice through the development of a novel alternative procurement option (i.e., negotiation). A mixed philosophical stance combining interpretivism and pragmatism was used—interpretivism to critically review literature in order to form the basis of inductive research to discuss negotiation as a viable procurement route, and pragmatism to analyse perceptions of tendering and procurement. The methods used follow a three-stage waterfall process including: (1) literature review and pilot study; (2) quantitative analysis of case study data; and (3) qualitative data collection via a focus group. Our research underscores the need to advise clients and their representatives of the importance of understanding the scope of works allowed within a tender submission before discounting it based solely on price. In addition, we highlight the failings of competitive tendering, which results in increased costs and project duration once the works commence on site. These findings provide new contemporary insight into procurement and tendering in the construction industry, with emphasis on SME contractors, existing relationships, and open-book negotiation. This research illustrates the adverse effects of early cost estimates produced without first securing a true understanding of project buildability and programming. Our work concludes with a novel insight into an alternative procurement option that involves early SME contractor involvement in an open-book environment, without the need for a third-party cost control.

scholarly journals Bioclimatic and Regenerative Design Guidelines for a Circular University Campus in India

2021 ◽  
Vol 13 (15) ◽  
pp. 8238
Author(s):  
Noemi Bakos ◽  
Rosa Schiano-Phan
Keyword(s):  
Construction Industry ◽  
Assessment Tool ◽  
Economic Benefits ◽  
Design Guidelines ◽  
University Campus ◽  
Design Strategies ◽  
Regenerative Design ◽  
Governmental Institutions ◽  
Social Environmental

To transform the negative impacts of buildings on the environment into a positive footprint, a radical shift from the current, linear ‘make-use-dispose’ practice to a closed-loop ‘make-use-return’ system, associated with a circular economy, is necessary. This research aims to demonstrate the possible shift to a circular construction industry by developing the first practical framework with tangible benchmarks for a ‘Circular University Campus’ based on an exemplary case study project, which is a real project development in India. As a first step, a thorough literature review was undertaken to demonstrate the social, environmental and economic benefits of a circular construction industry. As next step, the guideline for a ‘Circular University Campus’ was developed, and its applicability tested on the case study. As final step, the evolved principles were used to establish ‘Project Specific Circular Building Indicators’ for a student residential block and enhance the proposed design through bioclimatic and regenerative design strategies. The building’s performance was evaluated through computational simulations, whole-life carbon analysis and a circular building assessment tool. The results demonstrated the benefits and feasibility of bioclimatic, regenerative building and neighbourhood design and provided practical prototypical case study and guidelines which can be adapted by architects, planners and governmental institutions to other projects, thereby enabling the shift to a restorative, circular construction industry.

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