S.L. Alfarokhi, Qurtubi Qurtubi, Suci Miranda · IOP Conference Series Materials Science and Engineering · 2019
Abstract The objective of this research is to reduce the process distance on storage and retrieval (S/R) by suggesting storage system of piano’s cabinets (piano’s parts) on the certain storage shelf. The object of the research is department of setting cabinet that obligated to bridge and organize cabinet’s supply from department of painting to department of assembly. Based on the planning and actual delivery of piano cabinets to department of assembly, it is found that only 33,3% deliveries were accomplished as recorded by data on April 2018. One of the causes is internal handling problem at the department of cabinet setting that takes longer time due to unorganized cabinet storage. After all data of “in-out stock” are resumed, later it will be processed by employing class-based storage method for material’s grouping. The data indicated that cabinet with material class A is dominated by top 4 requested models of piano and the comparison between initial storage system layout and the proposed one shows the difference on total distance of retrieval activities for 210 kilometers during 5 months of working. It could be concluded that the purpose of storage system could reduce the retrieval distance by 68%.
Cited by 0Open access
Banu Y. Ekren, Zaki Sari, Tone Lerher · IFAC-PapersOnLine · 2015
In this study, we aim to find out the best rack design for shuttle-based storage and retrieval system (SBS/RS) under class-based storage policy (CSP). SBS/RS is a new technology in automated storage and retrieval system (AS/RS) which is developed for high transaction environments where mini-load AS/RS crane may not be able to keep pace with the transaction rate needed over a given number of storage locations. We consider several rack design concepts in terms of number of aisles, tiers and bays in the warehouse. The performance of the system is evaluated in terms of utilizations of lifts and storage/retrieval devices and cycle times of storage/retrieval transactions. We utilize simulation for the modeling purpose. The results indicate that CSP works better under high rise warehouse design. So, this may create less number of lifts requirement in the system. Hence, the warehouse design with CSP may tend to have lower investment cost. By this study, we also aim to provide practitioners and academia a significant insight for SBS/RS design under several rack design concepts for CSP.
Cited by 52Open access
Nur Iftitah, Qurtubi Qurtubi, Muchamad Sugarindra · SHILAP Revista de lepidopterología · 2023
This research aims to determine the scope and pattern of research and understand trends in class-based storage research, to deliver the latest research on the topic of class-based storage for future studies. This study is based on data derived from several journal publications, limited only to publication years of 2012 to 2023. Harzing's Publish or Perish and VOSviewer software were used in data collection. Therefore, 980 articles were obtained based on keywords and processed by using bibliometric analysis. From the results of bibliometric research on the topic of class-based storage, identification of trends and patterns on research growth is obtained, analyzing renewal, obsolescence, and distribution of references, estimating productivity, author, year of publication, most-contributed publishers, and collaboration among authors who discussing interrelated topics. This research shows that in bibliometric studies in class-based storage literature, by involving analysis through keywords contained in titles and abstracts, as well as various analyses of years of publication, most publications are able to deepen and expand the literature in the previous class-based storage-related research. So that the findings in terms of assessment techniques and relationships can be used as information for future researchers in such fields of study. Research on bibliometrics is the main reference, especially in the arrangement of facility layout and warehouse management. The originality provided by this study lies in the presentation of differences and similarities between current researchers and previous researchers and the processing of publication databases based on class-based storage journals. So that all published information on the topic of class-based storage in the last 10 years (2012-2023) could become a basis and reference for further research.
Cited by 0Open access
Yu, Y, de Koster, Rene · Data Archiving and Networked Services (DANS) · 2009
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Tho, T, de Koster, Rene · Data Archiving and Networked Services (DANS) · 2005
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Nima Zaerpour, Yeh‐Wei Yu, M.B.M. deKoster · John Spoor Broome Library Institutional Repository (California State University) · 2016
Live-cube compact storage systems realize high storage space utilization and high throughput, due to full automation and independent movements of unit loads in three-dimensional space. Applying an optimal two-class-based storage policy where high-turnover products are stored at locations closer to the Input/Output point significantly reduces the response time. Live-cube systems are used in various sectors, such as warehouses and distribution centers, parking systems, and container yards. The system stores unit loads, such as pallets, cars, or containers, multi-deep at multiple levels of storage grids. Each unit load is located on its own shuttle. Shuttles move unit loads at each level in the <i>x</i> and <i>y</i> directions, with a lift taking care of the movement in the <i>z-</i>direction. Movement of a requested unit load to the lift location is comparable to solving a Sam Loyd's puzzle game where 15 numbered tiles move in a 4 × 4 grid. However, with multiple empty locations, a virtual aisle can be created to shorten the retrieval time for a requested unit load. In this article, we optimize the dimensions and zone boundary of a two-class live-cube compact storage system leading to a minimum response time. We propose a mixed-integer nonlinear model that consists of 36 sub-cases, each representing a specific configuration and first zone boundary. Properties of the optimal system are used to simplify the model without losing any optimality. The overall optimal solutions are then obtained by solving the remaining sub-cases. Although the solution procedure is tedious, we eventually obtain two sets of closed-form expressions for the optimal system dimensions and first zone boundary for any desired system size. In addition, we propose an algorithm to obtain the optimal first zone boundary for situations where the optimal system dimensions cannot be achieved. To test the effectiveness of optimal system dimensions and first zone boundary on the performance of a two-class-based live-cube system, we perform a sensitivity analysis by varying the ABC curve, system size, first zone size, and shape factor. The results show that for most cases an optimal two-class-based storage outperforms random storage, with up to 45% shorter expected retrieval time.
Cited by 0Open access
NTUR (臺灣機構典藏) · 2001
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Xianhao Xu, Xiaozhen Zhao, Bipan Zou et al. · Cluster Computing · 2018
Cited by 21
Fede, Giulia · Duo Research Archive (University of Oslo) · 2023
Den nylige veksten i netthandel under COVID-19-pandemien har intensivert etterspørselen etter effektive lagerbygninger med høy lagringskapasitet og gjennomstrømning. Puzzle-baserte lagringsløsninger (PBS) har vist seg å være effektive for å optimalisere lagringskapasiteten med begrenset plass. For å ytterligere forbedre disse evnene, har Logistikk 4.0 Lab ved NTNU og selskapet Wheel.me introdusert et nytt system som bruker autonome hjul, slik at lagringshyller kan bevege seg i alle retninger. Denne innovative tilnærmingen har potensial til å betydelig forbedre gjennomstrømningskapasiteten.\nTidligere studier har hovedsakelig fokusert på å evaluere henteytelsen basert på faktorer som eskorteposisjoner, inngangs-/utgangspunkter og bevegelsesbegrensninger. Denne artikkelen har som mål å forbedre hentetiden ved å implementere en lagringspolitikk basert på to klasser.\nVed strategisk å plassere høyomsetningsvarer nær inngangs-/utgangspunktet, minimeres reiseavstander, noe som resulterer i raskere henting. For å evaluere effektiviteten til lagringssystemet basert på klasser, vurderes ulike inngangsparametere, inkludert ABC-kurven, systemstørrelse, formen til klasse A og formforholdet. Målet er å undersøke hvordan det optimaliserte systemet med en lagringspolitikk basert på klasser påvirker ytelsen til den nye konfigurasjonen. Funnene avslører betydelige reduksjoner i syklustid, med forbedringer på opptil 150 % sammenlignet med tilfeldig lagring, avhengig av den spesifikke systemkonfigurasjonen og egenskapene til de lagrede elementene.
Cited by 0Open access
Beatric Aditya Sihaloho, Dina Rachmawaty Semnasti, Syarif Hidayatuloh Semnasti · WALUYO JATMIKO PROCEEDING · 2023
PT. XYZ merupakan salah satu perusahaan industri manufaktur yang memproduksi beberapa jenis excavator yaitu excavator 200 standar excavator 200 long arm excavator 80 amphibious dan excavator 200 amphibious. Penelitian ini berfokus pada excavator 200 standar karena excavator tipe ini adalah produk dengan penjualan terbanyak di tahun 2022. Permasalahan yang dihadapi oleh PT. XYZ adalah perusahaan masih menggunakan sistem penyimpanan sparepart pada layout gudang secara acak dan mengakibatkan ada beberapa sparepart diletakan pada area gudang yang kosong hingga ada sparepart yang menutupi area pejalan kaki. Tujuan dari penelitian ini adalah untuk memberi layout usulan yang lebih optimal dari segi penyimpanan sparepart serta dapat mengurangi jarak perpindahan di gudang. metode yang digunakan dalam penelitian ini adalah metode Class-Based Storage dengan cara menghitung dan mengelompokan sparepart berdasarkan storage police.Hasil yang diperoleh dari penelitian ini adalah terdapat selisih jarak perpindahan sebesar 32,365 m dari jarak perpindahan pada layout awal.
Cited by 1Open access
Deddy Supriyadi, Atikha Sidhi Cahyana · Indonesian Journal of Innovation Studies · 2024
This study addresses inefficiencies in the warehouse layout of a paper production company in Pasuruan, East Java, which led to delayed deliveries. By implementing shared storage (SS) using FIFO and class-based storage (CBS), the research aimed to optimize space and improve material handling efficiency. Data collection involved observation, interviews, and company records. The proposed layout reduced space usage from 59.45% to 16.95% and achieved significant time savings: 17.84% for brown paper, 8.84% for white paper, and 28.51% for custom-colored paper. The findings suggest that a systematic layout can greatly enhance warehouse efficiency. Future studies should consider the cost factors associated with these improvements. Highlights: Space Efficiency: Reduced usage from 59.45% to 16.95%. Time Savings: Up to 28.51% for custom-colored paper. Data-Driven: Used observations, interviews, and records for layout optimization Keywords: Warehouse layout, material handling, shared storage, class-based storage, efficiency improvement
Cited by 0Open access
van den Berg, J.P. · Data Archiving and Networked Services (DANS) · 1994
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Shu‐Yi Hsieh, Kun‐Che Tsai · The International Journal of Advanced Manufacturing Technology · 2001
Cited by 57
Surya Aditya, Said Salim Dahda · Jurnal Teknologi Terapan G-Tech · 2025
This research aims to make the process of picking goods according to their type easier, so that the distance of transporting materials is shorter than the previous distance. FSN Analysis classifies goods based on the frequency of demand, and Class Based Storage groups goods based on their category (FSN) and places them in strategic locations in the warehouse. In this research, changes to the warehouse layout were made manually based on the results of the FSN analysis and the application of the Class Based Storage method. The results of the FSN Analysis are 7 types of Fast moving category goods, 6 types of Slow moving category goods, and 2 types of Non-moving category goods. FSN analysis is made by sorting all frequencies of goods from the highest value, as well as cumulative calculations and frequency percentages. By comparing the initial layout with the proposed layout, data processing results in a total decrease from IDR 6.558.992,00/ month to IDR 3.825.480,00/ month, or 41,7% more efficient by using the proposed layout based on the Class Based Storage method and FSN Analysis reduce moment material handling 42%. Therefore, it can be concluded that the problem of storing goods in PT XY's warehouse will be solved if using a storage optimization policy that uses the Class Based Storage method and FSN Analysis as a review and reference material in arranging future storage layouts.
Cited by 0Open access
Deddy Supriyadi, Atikha Sidhi Cahyana · 2023
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Dong Yang, Chunze Fu, Zhaopan Sang · Cluster Computing · 2026
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Muhammad Rifqi Reza Fahlevi, Abi Hanif Dzulquarnain · Jurnal Simki Economic · 2025
Tata letak gudang yang kurang efektif di PT. XYZ menyebabkan proses pengambilan barang yang lama dan ketidakefisienan operasional. Penelitian ini menggunakan metode deskriptif kualitatif Penelitian ini berfokus pada perancangan ulang tata letak gudang suku cadang menggunakan metode Class-Based Storage (CBS) untuk meningkatkan aksesibilitas dan meminimalkan waktu pengambilan. CBS mengelompokkan barang berdasarkan frekuensi pergerakan, memastikan barang yang sering diakses mudah dijangkau. Dengan menganalisis tantangan yang ada, termasuk penyimpanan yang tidak terorganisir dan penempatan barang yang tidak sistematis, penelitian ini menghasilkan desain tata letak baru. Hasilnya menunjukkan pengurangan total jarak pengambilan barang serta peningkatan efisiensi dalam penyimpanan dan identifikasi barang, mendukung alur kerja operasional yang lebih lancar dan pengelolaan sumber daya yang lebih baik.
Cited by 1Open access
Rini Alfatiyah, Sofian Bastuti, Riki Effendi · Suara Teknik Jurnal Ilmiah · 2021
With many product characteristics, it is very vulnerable in the preparation of products and in the ideal capacity available. This happens in the warehouse. To find the ideal storage, an analysis of the warehouse layout is performed. The purpose of this study is to increase the warehouse's capacity and classify the products that are in the warehouse's storage locations. This Class-Based Storage method is a way of calculating and classifying based on the frequency of product movement. This research was carried out at PT. Cakra Satria Pratama in the warehouse. The results of this study indicate that the placement of the product is not ideal. Therefore, with the results of the proposed layout analysis results in the classification of products, when producing categories A, B and C with category A 53.85% of total products, category B 30.77% of total products and category C 15.38 % of the total products. Keyword: Layout; Class Based Storage Method; Warehouse.
Cited by 4Open access
Behnam Bahrami, Hemen Piri, El‐Houssaine Aghezzaf · 2019
Storage, per se, is not only an important process in a warehouse, also it has the greatest influence on the most expensive one, i.e., order picking. This study aims to give a literature overview on class-based storage location assignment (CBSLAP). In this paper, we discuss storage policies and present a classification of storage location assignment problem. Next, different configuration of classes are presented. We identify the research gaps in the literature and conclude with promising future research directions.
Cited by 12Open access
Travis Larson, HEATHER MARCH, Andrew Kusiak · IIE Transactions · 1997
Abstract This paper presents a procedure for warehouse layout. It employs the principles of class-based storage to increase floor space utilization and decrease material handling. Three phases of the procedure are outlined: (1) determination of aisle layout and storage zone dimensions, (2) assignment of material to a storage medium, and (3) allocation of floor space. An industrial case study illustrates the procedure for a warehouse required to store 739 different products totaling more than 10000 pallets of material. An improved layout was developed and compared with the existing alternative. The proposed layout offered savings of more than 20 000 square feet of floor space and an approximately 45% reduction in material handling distance.
Cited by 64