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Creative Commons licence CC BY-NC (Attribution-NonCommercial) Logforum. 2018. 14(1), article 9, 101-112; DOI: https://doi.org/10.17270/J.LOG.2018.254


Riccardo Accorsi, Marco Bortolini, Emilio Ferrari, Mauro Gamberi, Francesco Pilati

Alma Mater Studiorum, University of Bologna, Bologna, Italy


Background: Unit-load (UL) warehouses are among the most diffuse solutions to store items stocked in pallets, while class-based storage (CBS) assignment is an effective strategy balancing the storage space need and the UL traceability. This paper proposes a design strategy to reduce the access time for UL-CBS systems based on the inclusion of one additional diagonal aisle crossing the racks and the parallel aisles accessing the storage bays.

Methods: The introduced design strategy is based on the analytic models to compute the access time for one diagonal-cross aisle warehouses with 2- and 3-CBS system. The minimization of the closed form expressions getting the average time to reach the storage bays allow reducing the travelled paths to store and retrieve (S&R) the ULs.

Results: Comparison of the average time to S&R the ULs between traditional warehouses and the proposed configuration highlights the positive impact of the diagonal cross-aisle inclusion. In addition, a case example for a company operating within the food sector shows performance increase of about 33% respect to the correspondent traditional warehouse configuration.

Conclusion: The interest in non-traditional warehousing systems raises because of the savings in the time to S&R the ULs. Analytic and even more general models to compute such savings are of help to best design the storage area increasing the inbound handling performances.

A part of this study was presented as oral presentation at the "24th International Conference on Production Research (ICPR 2017)" in Poznan, Poland from July 30 to August 3, 20017.

Keywords: warehouse design, diagonal cross-aisle, class-based storage, access time model, optimization
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For citation:

MLA Accorsi, Riccardo, et al. "Class-based storage warehouse design with diagonal cross-aisle ." Logforum 14.1 (2018): 9. DOI: https://doi.org/10.17270/J.LOG.2018.254
APA Riccardo Accorsi, Marco Bortolini, Emilio Ferrari, Mauro Gamberi, Francesco Pilati (2018). Class-based storage warehouse design with diagonal cross-aisle . Logforum 14 (1), 9. DOI: https://doi.org/10.17270/J.LOG.2018.254
ISO 690 ACCORSI, Riccardo, et al. Class-based storage warehouse design with diagonal cross-aisle . Logforum, 2018, 14.1: 9. DOI: https://doi.org/10.17270/J.LOG.2018.254