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Article

Sustainable Ship Loading Planning for Prefabricated Products in the Construction Industry

by 1,*, 1 and 2
1
School of Built Environment, College of Sciences, Massey University, 0632 Auckland, New Zealand
2
Faculty of Business, The Hong Kong Polytechnic University, Hong Kong SAR, China
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(21), 8905; https://doi.org/10.3390/su12218905
Received: 16 September 2020 / Revised: 12 October 2020 / Accepted: 13 October 2020 / Published: 27 October 2020
This paper focuses on sustainable transportation of prefab products from factories to construction sites by ship. Since the transportation cost for all the prefab products of a construction site is mainly dependent on the number of cargo holds used on ships, a loading plan for prefab products that minimizes the number of holds required is highly desirable. This paper is therefore devoted to the development of an optimal loading plan that decides which prefab products are loaded into each cargo hold and how to pack these prefab products into the holds so that as few holds as possible are used. We formulate the problem as a large-scale integer optimization model whose objective function is to minimize the total number of cargo holds used and whose constraints represent the cargo hold capacity limits. We develop a heuristic to solve the problem and obtain a high-quality solution. We have tested the model and algorithm on a case study that includes 20 prefab products. We find that different cargo holds carry prefab products that have quite different densities. Moreover, the orientations of many prefab products are different from their default orientations. The results demonstrate the applicability of the proposed model and algorithm. View Full-Text
Keywords: sustainable shipping; logistics in construction; prefabrication product loading plan sustainable shipping; logistics in construction; prefabrication product loading plan
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MDPI and ACS Style

Yi, W.; Phipps, R.; Wang, H. Sustainable Ship Loading Planning for Prefabricated Products in the Construction Industry. Sustainability 2020, 12, 8905. https://doi.org/10.3390/su12218905

AMA Style

Yi W, Phipps R, Wang H. Sustainable Ship Loading Planning for Prefabricated Products in the Construction Industry. Sustainability. 2020; 12(21):8905. https://doi.org/10.3390/su12218905

Chicago/Turabian Style

Yi, Wen, Robyn Phipps, and Hans Wang. 2020. "Sustainable Ship Loading Planning for Prefabricated Products in the Construction Industry" Sustainability 12, no. 21: 8905. https://doi.org/10.3390/su12218905

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