Warehouse Management: Concepts, Design, and Operations
Warehouse Concept and Functions
A warehouse is a logistics facility for storing and protecting goods, regulating stock flow, balancing supply and demand, acting as a logistics network node, and bringing products closer to the customer.
Warehouse Objectives
- Efficient space use
- Minimum handling
- Easy access to goods
- High rotation
- Flexible product location
- Accurate stock control
Types of Warehouses
- By structure: Outdoor, indoor, mixed.
- By activity: Commercial or industrial.
- By logistics function: Central or logistics platform, regional/local, forwarding, sorting, and reshipment.
- By tax regime: Bonded or non-bonded.
- By ownership: Owned, leased, rented.
- By automation: None, basic, or full automation.
Implementation and Planning
Includes location, layout, space distribution, storage systems, handling equipment, personnel, budget, product type, costs, stock management, logistics role, customer service level, and automation degree.
Warehouse Layout
The layout must optimize space, reduce movements, allow flexibility, improve stock control, and adapt to product rotation and handling.
Warehouse Areas
- Reception: Quality control, unit change, consolidation/deconsolidation.
- Storage: High/low rotation, special products.
- Picking: Paper, PDA, pick-to-light, voice.
- Shipping: Checking, packaging, consolidation, departure control.
- Auxiliary areas: Returns, packaging, administration, services.
External Infrastructure
Y-shaped access, concrete yards, and loading docks. Docks can be integrated or separated. Design depends on vehicle capacity, slope, climate, traffic organization, and future expansions.
Unit Load Requirements
No overhang, maximum pallet surface usage, stability, access from two or four sides, product protection, and proper identification (GS1).
Internal Infrastructure
Aimed at minimizing handling, maximizing space, ensuring fast access, high rotation, and flexible stock control.
Aisles
- Pedestrians: 1.20 m
- Trilateral forklifts: 1.50–1.80 m
- Reach trucks: 2.50–3.50 m
- Counterbalanced forklifts: 3.25–3.50 m
- Rails or guidance systems may be used.
Location Codification
Area – Aisle – Rack – Module – Level – Location.
Cross-Docking
Goods move directly from reception to dispatch with little or no storage. It reduces costs and stock but requires strong coordination between supplier, carrier, and distributor.
Unit Load and Pallets
A unit load is a group of products prepared to facilitate transport, storage, and handling. It is efficient when it optimizes space, safety, and logistics operations.
Standard Pallets
- Euro pallet: 800×1200 mm
- Half pallet: 800×600 mm
- Quarter pallet: 600×400 mm
Recommended Heights
- Euro pallet: Max 2.60 m (2.40 m refrigerated)
- Half pallet: 1.30 m (1.45 m beverages)
- Quarter pallet: 1.60 m
Maximum Weights
- Euro pallet: 1000 kg
- Half pallet: 500 kg
- Quarter pallet: 250 kg
- Manual handling: Max 15 kg
Selection Criteria
Product type, rotation, handling equipment, available space, stock control, safety, investment cost, and efficiency.
Storage Systems
- Conventional racks: Direct access, more aisles.
- Mobile racks: Space saving, slower access.
- Drive-in: LIFO, maximum space use, low selectivity.
- Drive-through: FIFO, suitable for perishable goods.