Sistem Pendukung Keputusan Persediaan Besi Menggunakan Metode Economic Order Quantity Berbasis Web dengan Validasi Kapasitas Gudang

Mochamad Iqbal Ramadhan; Bambang Sujatmiko

doi:10.70340/jirsi.v5i3.519

Authors

Mochamad Iqbal Ramadhan Universitas Hasyim Asy'ari
Bambang Sujatmiko Universitas Hasyim Asy'ari

DOI:

https://doi.org/10.70340/jirsi.v5i3.519

Keywords:

Decision Support System, Economic Order Quantity, Inventory Management, Warehouse Capacity, Reorder Point

Abstract

Inventory management that relies solely on the owner's intuition without a mathematical basis often leads to two classic problems: overstock that freezes working capital and stockout that eliminates revenue potential. This problem becomes more complex when the physical warehouse capacity is not considered in procurement decisions. This study aims to design and develop a web-based Decision Support System (DSS) implementing the Economic Order Quantity (EOQ) method to generate optimal order quantity (Q*) and Reorder Point (ROP) recommendations, while integrating the physical warehouse capacity of 504 m³ as a validation parameter. The novelty of this research lies in incorporating physical volume per item unit (m³) as a warehouse capacity constraint within the web-based DSS, differentiating it from conventional EOQ implementations. The system was built using PHP with a MySQL database following the Waterfall development model. Black Box Testing across 21 scenarios on 5 main modules yielded entirely valid results. Manual calculation validation on 15 steel products confirmed that Q* and ROP values produced by the system are identical to theoretical calculations. The system also successfully auto-detects products exceeding warehouse capacity and notifies the user.

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