Construction site layout optimization model considering cost and safety in a dynamic environment
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ORIGINAL PAPER
Construction site layout optimization model considering cost and safety in a dynamic environment Kamal Jaafar1 · Raghda Elbarkouky2 · Joel Kennedy3 Received: 13 July 2020 / Accepted: 13 October 2020 © Springer Nature Switzerland AG 2020
Abstract The construction industry is a complex field that requires lots of planning to succeed. The first step of planning in a construction project is planning the construction site layout. This paper develops a model formulation to optimize the construction site layout from the perspective of cost and risk. The developed optimization model also takes into consideration the dynamic environment of a construction site. That is, it demonstrates the situation that occurs in reality, since facilities, locations and their dimensions may vary throughout construction stages. The model aims to minimize both the cost and the risk involved in the project in a dynamic environment. Both cost and risk are minimized for material flow, equipment flow, people follow, facility setup, facility dismantling and facility relocation. The model generated in this paper was solved by standard branchand-bound technique using LINGO software. To verify the model, a case study was solved using the generated model and results were compared to the same project completed in reality. Keywords Optimization · Dynamic construction site layout · Cost · Risk · Material flow · Equipment flow · People follow · Facility setup · Facility dismantling and facility relocation
General introduction The process of construction is very complex and involves numerous aspects that have to be studied and planned for. The first and most important step in construction projects’ success is careful planning. Planning a construction project is considered to be the basis of its success (Ning et al. 2018). Project planning is extremely valuable since decisions and changes made at early stages of the project have a tendency to be more efficient than those made at later stages (Ning et al. 2018). When looking at a construction plan, one of the most important things to consider is the construction * Kamal Jaafar [email protected] Raghda Elbarkouky [email protected] Joel Kennedy [email protected] 1
University of Wollongong in Dubai, Dubai, UAE
2
ASGC Global Construction, Dubai, UAE
3
University of Southern Queensland, Toowoomba, QLD, Australia
site layout. Developing the construction site layout is a vital action to make the most of the available site space. In addition, a good site layout plan contributes to minimizing the travel distances between facilities and thus, reducing related risks and costs (Said and El-Rayes 2013). Therefore, decisions such as proper allocation of construction site facilities should be studied intensely to choose the most suitable scenario of facility allocation. Such studies will improve construction site safety management, minimize related risks and costs and save time in both the preconstruction and construction stages (Ning et al. 2018).
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