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Optimalisatie van het werkvoorbereidingsproces: onderzoek naar de mogelijkheden, door toepassing van het 3D-model, om het werkproces van de werkvoorbereider te optimaliseren

Punte, R.H.J. (2012) Optimalisatie van het werkvoorbereidingsproces: onderzoek naar de mogelijkheden, door toepassing van het 3D-model, om het werkproces van de werkvoorbereider te optimaliseren.

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Abstract:Virtual Construction is a hot item in the construction industry nowadays. It is viewed as an important development for the future of the Dutch construction industry. The expectations are high; it leads to faster, cheaper and better quality of buildings. This research focuses on the development of the Virtual Construction of the project preparer. The research has the following central question: Which proposals can improve Virtual Construction to contribute to shorten the process time? The project preparer is responsible to convert the design of a construction project to a Uitvoeringsgereed Ontwerp, which the execution of the project can start. To identify the contribution of Virtual Building to shorten the process time, it is compared with the current process. By holding a case study about the practical application of Virtual Construction, the conclusion has been made whether it contributes to shorten the process time. Based on the problems that have arisen in practice the proposals have been developed to improve Virtual Construction. Current process In the current process the project preparer use 2D-drawing. This is concluded by several researchers (Arayici, et al (2011), Taylor (2007) and Sewing Jung (1996)) as an inefficient process. The 2Ddrawing is a cost-determining process where a design change leads to changing of multiple drawings. In addition, the work drawings of the Uitvoeringsgereed Ontwerp are frequently generated by architectural parties. This means that there is a transition of the design from the architectural parties to the executing parties (contractors and subcontractors). This is according to several researchers (Lam, et al (2006) and Taylor (2007)) a difficult transition, due to the different ideas and knowledge of the design by the parties. When generating a Uitvoeringsgereed Ontwerp the project preparer works together with subcontractors. They are involved in phases, partly due the time constraints. This may occur in an incomplete assumption of a subcontractor. This leads to iterations, which results in a long process time. There are opportunities to optimize the current process of the project preparer, which has led to a developing of a new process called Virtual Construction. Virtual Construction On the one hand Virtual Construction contributes to shorten the process time with the use of the 3Dmodel. The drawings, which are generated from the model, are matched and for a design change only one adjustment have to be made for multiple drawings. Additionally the 3D-model offers opportunities like visualization and clash controls to optimize the design. With these tools one is able to make decisions at an early stage, by viewing the design in multiple ways (Hartman, et al, 2007). On the other hand the selection of the subcontractors is at the same time, this makes it possible to develop and finish the design together. This differs from the current process, where the subcontractors are selected separately. The expectation is that the coordination between the subcontractors can be made at one time, whereby incomplete assumptions will be prevented. Case study With an introduction of a new process with high expectations, people in practice are curious if it works. In this research is a case study has been held with the focus on the application of Virtual Construction in practice. The case study shows that the use of the 3D-model has led to more insight of the project. Besides the drawings, which are generated from the model, are matched. Also, the 3D-model served its purpose in the field of visualization and clash controls. Nevertheless, there are problems to mention of Virtual Construction. It appears that the involvement of multiple subcontractors at the start of the Uitvoeringsgereed Ontwerpfase was not successful. It has led to problems of coordination and the total process time was not reduced. In addition, the 3D-model has a hindrance. Converting the model to IFC (data model) leads to data loss, this hindered the cooperation with other subcontractors. At last the design was not at a sufficient level, which has led to a redesign for several subcontractors. Proposals to improve Virtual Construction First, the problem of too many subcontractors involved by the start can be improved by making couples of the subcontractors. Veenstra, et al (2006) divides a project into products (subcontractors) and looks for the relationships between the products. By generating an overview of these relations, the products can be put together, which has relations to each other. Second, the design needs to have a certain level before the cooperation with subcontractors can start to reduce the process time. This means that the contradictions should be extracted and the installation model should be generated. Long way to go to Virtual Construction Besides the hindrance of the IFC data model Virtual Construction has still a long way to go. Despite the potential that Virtual Construction has, it is still not widely accepted within the construction industry. During the case appears that the parties do not fully support the 3D-model, which means that the cooperation between the parties is still in its infancy.
Item Type:Essay (Master)
Clients:
Van Wijnen
Faculty:ET: Engineering Technology
Subject:85 business administration, organizational science
Programme:Construction Management and Engineering MSc (60337)
Link to this item:https://purl.utwente.nl/essays/62291
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