scholarly journals Implementation of Prefabricated Building Systems in Iraq

2020 ◽  
Vol 23 (4) ◽  
pp. 371-382
Author(s):  
Zeyad S. M. Khaled
Keyword(s):  
Pilot Study ◽  
Government Support ◽  
Extensive Literature ◽  
Military Operations ◽  
Building Projects ◽  
Construction Methods ◽  
Building Systems ◽  
Traditional Construction ◽  
Governmental Strategy ◽  
Prefabricated Building

In recent decades, Iraq has witnessed several military operations. This has led to huge damages to the infrastructure of some main cities. The traditional construction methods seem not to be able to fulfill the rapid reconstruction works needed, while prefabricated building systems seem to be promising. This paper aims at evaluating the possibilities of using prefabrication systems for schools building as a pilot study for wider adoption. An extensive literature review was carried out to identify the features of construction prefabrication and its requirements. Then a thorough investigation of the possibilities of adopting this approach in Iraq and the major expected obstacles was carried out. A questionnaire survey has been conducted with (96) stakeholders who have experience in prefabricated building projects. The results showed that the highest rating of benefits went to time and productivity, while the highest rating of obstacles went to lack of government support. Therefore the top proposed action included the adoption of a clear governmental strategy for change. Finally, the respondents agreed that school building is the most suitable type of projects to start with.

scholarly journals THE PERCEPTION SURVEY OF BUILDINGS BASED ON WOOD IN THE CONTEXT OF TRADITIONAL CONSTRUCTION METHODS

2015 ◽  
Vol 1 (2) ◽  
pp. 117-122
Author(s):  
Jozef Švajlenka ◽  
Mária Kozlovská
Keyword(s):  
Lessons Learned ◽  
Traditional Methods ◽  
Construction Methods ◽  
Building Systems ◽  
Modern Methods ◽  
On Line ◽  
Level Of Knowledge ◽  
Economic Survey ◽  
Traditional Construction ◽  
Perception Survey

In the context of using modern methods of construction in Slovakia seem to be the most widespread building systems prefabricated buildings based on wood. Modern wooden buildings are undoubtedly constructions that realize the most modern and innovative construction methods. Modern buildings based on wood are becoming increasingly popular and more popular also in Slovakia. Even despite undeniable advantages that are associated with the use of modern construction systems based on wood, preventing more widespread wooden buildings low level of knowledge and awareness on the part of customers and investors. The aim of the paper is to present the lessons learned of realized socio economic survey on the perception properties of buildings based on wood in the context of traditional methods of construction through potential users. Obtaining information through questioning of respondents was carried out personal interviews as well as an electronic on-line questionnaire. The questionnaire was composed of five parts. The first part focuses on data about the respondent, others parts are focused on the architectural, constructional and technical, social, technological and economic oriented issues.

scholarly journals MANAGERIAL AND ECONOMIC OPTIMISATIONS FOR PREFABRICATED BUILDING SYSTEMS

2007 ◽  
Vol 13 (1) ◽  
pp. 83-91 ◽  
Author(s):  
Ahmed Abdallah
Keyword(s):  
Developing Countries ◽  
Point Of View ◽  
Economic Conditions ◽  
Scientific Development ◽  
The Political ◽  
Construction Methods ◽  
Building Systems ◽  
Concrete Building ◽  
Scientific Fields ◽  
Prefabricated Building

This paper deals with new realisations of research, scientific development, managerial and economic optimisations – a prefabricated building systems. In the literature, all scientific fields are worked out based on efficiencies, costs, benefits, choice of execution design, technical demands, aesthetical point of view, as well as the total economics. In the present example of a school building for communities in developing countries, the following criteria have been regarded: the optimal superstructure of prefabricated concrete building systems; the particularity of developing countries (eg the climate, the political and economic conditions); the time for construction and necessary innovative developments for an economically optimised superstructure. In addition, alternative construction methods and costs for a simple but variable system which can be adapted to changing functions are suggested.

scholarly journals BIM and DfMA: A Paradigm of New Opportunities

2021 ◽  
Vol 13 (17) ◽  
pp. 9591
Author(s):  
Sepehr Abrishami ◽  
Rocío Martín-Durán
Keyword(s):  
Literature Review ◽  
Conceptual Framework ◽  
Energy Use ◽  
Integrated Approach ◽  
Design Stage ◽  
Extensive Literature ◽  
Sources Of Information ◽  
Construction Methods ◽  
Wide Range

The main goal of this study is to explore the adoption of a design for manufacturing and assembly (DfMA) and building information management (BIM) approach during the whole lifecycle of assets. This approach aims to tackle issues inherent in the design of traditional construction methods, such as low productivity and quality, poor predictability and building performance, and energy use, through the implementation of a BIM library of off-site components. In recent years, a renewed interest has been directed to the attempt to provide solutions to these urgent problems through the adoption of new advancements in technologies. However, while there are studies focussing on a BIM-DfMA approach, there is a lack of research regarding how this approach should be adopted during the whole lifecycle of the assets. Furthermore, to the best of our knowledge, defining an efficient way of developing a component-based BIM object library has not yet been included in any of the available studies. A mixed methodology approach has been used in this research. A conceptual framework was developed as the result of an extensive literature review to investigate new advancements in the AEC sector. Following the literature review, the framework was tested and validated through a case study based on the production and adoption of a BIM library of off-site components at the design stage of an asset. The architecture, engineering, and construction (AEC) industry has recognised the necessity of a new approach that helps to resolve the well-known issues presented in traditional methods of construction. The conceptual framework and case study proposed presents a valuable new method of construction that support the implementation of a BIM and DfMA approach, highlighting their benefits. This framework has been created using many valuable and reliable sources of information. The result of this research supports the idea of a novel new construction method that focuses on a manufacturing-digital-driven industry, with the use of DfMA in a BIM-integrated approach. This novel method will add significance and be beneficial for a wide range of aspects in the construction sector, contributing to the theoretical and practical domain.

scholarly journals A BIM-Based Study on the Comprehensive Benefit Analysis for Prefabricated Building Projects in China

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Yingbo Ji ◽  
Siwei Chang ◽  
Yuan Qi ◽  
Yan Li ◽  
Hong Xian Li ◽  
...  
Keyword(s):  
Economic Evaluation ◽  
Economic Benefits ◽  
Construction Technique ◽  
Building Projects ◽  
Comprehensive Benefit ◽  
Incentive Policies ◽  
Improved Performance ◽  
Prefabricated Building

Prefabricated construction has been widely accepted as an alternative to conventional cast-in-situ construction, given its improved performance. Great efforts have also been made to develop prefabricated construction technologies in China. However, there is a lack of an appropriate pattern for evaluating its comprehensive economic merits, and reasonable mathematical models for providing a comparative analysis of conventional cast-in-situ and prefabricated building projects have yet to be developed. Therefore, the research in this paper aims to comprehensively evaluate the economic benefits of implementing prefabricated construction techniques in order to surpass the economic barrier and promote the development of prefabricated buildings in China. The comprehensive economic evaluation is formulated in terms of resource-use efficiencies, project progress, and incentive policies. An apartment building in Shanghai is selected as a case study. Construction progress is simulated on the BIM platform when the same case study is rationally transformed from the prefabricated to the conventional cast-in-situ construction technique. The results reveal that the comprehensive economic merit can reach ¥739.6/m2 when selecting the prefabricated construction process. The economic benefit brought by shortening the construction period can be regarded as the most significant contributor. Yet, the current incentive policies only contribute 7.1% of the comprehensive economic evaluation. Overall, this research contributes an assessment framework for decision-making in the technique management of building construction. The BIM-based simulation approach can greatly help investors to identify the relevant economic factors and adopt the latest incentive policies.

scholarly journals A study of best management practices for enhancing productivity in building projects: construction methods perspectives

2016 ◽  
Vol 16 (3) ◽  
pp. 1-19 ◽  
Author(s):  
Argaw Tarekegn Gurmu ◽  
Ajibade Ayodeji Aibinu ◽  
Toong Khuan Chan
Keyword(s):  
Best Practices ◽  
Best Management Practices ◽  
Traffic Control ◽  
Management Practices ◽  
Phase 1 ◽  
Second Phase ◽  
Building Projects ◽  
Control Plan ◽  
Best Management ◽  
Construction Methods

This research investigates management practices that have the potential to enhance productivity in building projects by focusing on construction methods. In phase 1 of the study, face-to-face interviews with nineteen experts were conducted to identify the best management practices for construction methods. The qualitative data analysis reached saturation and resulted in a list of best practices for construction methods that are relevant to the local industry. The second phase used an industry-wide survey to prioritize the best practices. Accordingly, project start-up plan, traffic control plan, machinery positioning strategy, project completion plan, and dynamic site layout plan were shown to be the top five best practices for construction methods. The study also revealed that high levels of implementation of best practices are associated with low levels of project delays. The use of best practices also varied according to the project costs. There were no discernible differences between the top five best practices. The authors suggest that they should be implemented jointly to improve productivity in building projects. Contractors could use the logistic regression model developed, to predict the probability of exceeding a baseline productivity factor and, on that basis, implement corrective actions to achieve the desired level of productivity. 

scholarly journals A review of causes of variation order in the construction of terrace housing projects in Malaysia

2019 ◽  
Vol 277 ◽  
pp. 03013
Author(s):  
Noraziah Mohammad ◽  
Zabidi Hamzah
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Construction Project ◽  
Extensive Literature ◽  
Time Cost ◽  
Construction Time ◽  
Building Projects ◽  
Housing Projects ◽  
Building Project

Variation order refers to any changes from the scope, plan, specification or contract document in the construction project. This changes of work is a common problem in construction projects in Malaysia. It is inevitable in any construction project and this problem can become more serious when variation order causes work progress to be impaired as a results it increased the construction time and cost that affects the construction industry in Malaysia. This paper critically review the causes of variation order in the construction industry on the double-storey terrace housing project in Malaysia. The discussions began with the construction industry in Malaysia and then related parties involved in the construction industry. The extensive local and abroad literature review on the definitions of variation order and analysis of past studies conducted on variation order and the previous study of the prediction model of variation. The extensive literature on variation order in the construction of building project may help to improve the performance in term of time, cost and quality of the construction of building projects in Malaysia.

scholarly journals Model for planning and controlling the delivery and assembly of engineer-to-order prefabricated building systems: exploring synergies between Lean and BIM

2020 ◽  
Vol 47 (2) ◽  
pp. 165-177 ◽  
Author(s):  
Fernanda S. Bataglin ◽  
Daniela D. Viana ◽  
Carlos T. Formoso ◽  
Iamara R. Bulhões
Keyword(s):  
Construction Projects ◽  
Information Modeling ◽  
Theoretical Contribution ◽  
Building Systems ◽  
Pull Production ◽  
Building Information ◽  
Engineer To Order ◽  
Cost Of Construction ◽  
A Company ◽  
Prefabricated Building

The adoption of prefabricated building systems has grown due to the need to reduce duration and cost of construction projects, as well as to improve quality and working conditions. However, the adoption of those systems requires an intense exchange of information to integrate the production of components, logistics operations, and site assembly. This is particularly important in engineer-to-order environments, in which the level of uncertainty tends to be high. This research proposes a model for planning and controlling the delivery and assembly of ETO prefabricated building systems, emphasizing the integration between site installation and logistics operations. This model was devised in an empirical study carried out in a company that delivers and assembles prefabricated concrete structures. The main theoretical contribution is a set of approaches to implement the “pull production” and “reduce variability” principles in this particular context, exploring synergies that exist between Lean Production principles and Building Information Modeling (BIM) functionalities.

scholarly journals Understanding the Adoption of Halal Logistics through Critical Success Factors and Stakeholder Objectives

Logistics ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 38
Author(s):  
Abid Haleem ◽  
Mohd Imran Khan ◽  
Shahbaz Khan
Keyword(s):  
Critical Success Factors ◽  
Success Factors ◽  
Service Providers ◽  
Government Support ◽  
Cold Chain ◽  
Extensive Literature ◽  
Logistics Service ◽  
Critical Success ◽  
Logistics Service Providers ◽  
Starting Point

Catering to Halal in the industry requires the explicit adoption of Halal Logistics (HL) to avoid the risk of cross-contamination and ensure that Halal products are safe, hygienic, nutritious, pure, unadulterated, and consistent with their labelling. We identify the need for meaningful research constructs relating to the appropriate adoption of Halal logistics through an extensive literature review. This paper identifies Critical Success Factors (CSF) and develops corresponding constructs that are fundamental for understanding the adoption of Halal logistics. This research also identifies the stakeholders involved and their objectives to facilitate the system design. As a starting point, from the existing literature, we adopt a structural model of CSFs to implement Halal Logistics. After that, this paper identifies and validates these CSFs with the support of extensive literature-based reviews, senior managers of Halal exporting organisations, Halal accrediting bodies, and professionals working in logistics and the cold chain. The research findings indicate that logistics service providers need to successfully upgrade their facilities to adopt Halal practices in their operations. Moreover, the role of governments is to reduce bureaucratic complexity so as to improve the ease with which businesses can implement HL. It becomes clear, from the analysis, that logistics service providers have the most prominent role in the effective adoption of the Halal supply chain. Consumers have a more prominent role than government support in the growing market of Halal products. This paper contributes to the identification of stakeholders’ objectives, which will facilitate the efficient adoption of Halal logistics and provide a direction for undertaking associated future work.

scholarly journals On prefabrication implementation for different project types and procurement methods in Hong Kong

2007 ◽  
Vol 5 (1) ◽  
pp. 68-80 ◽  
Author(s):  
Vivian W.Y. Tam ◽  
C.M. Tam ◽  
William C.Y. Ng
Keyword(s):  
Hong Kong ◽  
Design Stage ◽  
Structured Interviews ◽  
Residential Housing ◽  
Content Type ◽  
Early Design Stage ◽  
Construction Methods ◽  
Building Components ◽  
Residential Projects ◽  
Prefabricated Building

PurposeThe use of prefabrication has been considered as one of the most effective waste minimization methods in the construction context; however, the industry has found difficulties to implement it. Contractors lack experience in using prefabrication and they do not know how to implement prefabrication to their projects effectively. The purpose of this paper is to present the findings of a study on the implementation of prefabrication in the context of different project types and procurement approaches.Design/methodology/approachThis paper examines possible project types and procurement methods to maximally gain benefits of using prefabricated building components. A questionnaire survey and structured interviews have been conducted.FindingsFrom the results, it should be noted that residential projects and design and build procurement methods are the most effective project types and procurement methods, respectively, in using prefabrication. In the interview discussion, one of the governmental employees highlighted that about 65 percent of projects are residential projects. The high supply of residential housing suits fast population growth in Hong Kong. The interviewee also explained that shortening construction period is one of the main goals in their projects. Furthermore, an interviewed main contractor highlighted that the involvement of contractors at the early design stage in a project can bring advantages in considering construction methods before project commencement on site and to improve project constructability. An interviewed subcontractor also explained that the involvement of construction organizations in the design stage can effectively improve the use of prefabrication in major activities including concreting, plastering and formworking, rather than wet‐trade construction activities. Therefore, the use of standardized designs and prefabricated building components are highly encouraged.Originality/valueThis brings early considerations and suggestions to project parties to improve prefabrication implementation. The effects of prefabrication implementation are also considered.

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