LGT5015 Chap.8 Distribution Networks and Inventory Pooling
Distribution Networks and Inventory Pooling
Topology determines where uncertainty sits
Distribution can send products directly or through facilities that store, coordinate or rapidly transfer flow. This chapter compares direct shipment, warehousing, cross-docking, physical pooling and transshipment.
It keeps centralised decision-making separate from physical consolidation and tests every stock saving against transport, facility cost and the customer response promise.
Direct shipment removes one node
Sending from source to customer can avoid a warehouse, its inventory and handling. It may also create more small shipments, longer outbound distance or dependence on the source's response.
The facility saving is therefore only one line in the comparison. State whether transport economics and service remain credible after the intermediate point disappears.
Facilities can store or coordinate
A traditional warehouse positions inventory for downstream demand. A cross-dock coordinates rapid transfer with little or no storage.
Cross-docking requires linked information, predictable inbound timing and responsive outbound transport; when those conditions fail, goods wait and the building becomes an unplanned warehouse. Choose the function before evaluating the facility.
Pooling depends on offsetting demand
Shared stock can reduce protection inventory when high demand in one market is offset by lower demand elsewhere.
The gain shrinks when locations peak together. Physical centralisation is not the only route: transshipment can create a virtual pool through visibility and transfer between retail points.
In every case, the transfer time must still satisfy the customer or operational need.
Management and location are separate choices
Centralised control means decisions use systemwide information, while physical pooling describes where stock can be shared. A network can coordinate several facilities centrally or hold one pool under decentralised routines.
Compare inbound and outbound transport, facility cost, inventory, responsiveness and product characteristics. Close by explaining where uncertainty is absorbed, which cost increases and why the resulting topology still supports the service promise.
What this chapter covers
- 01
Direct shipment
- 02
Traditional warehousing
- 03
Cross-docking
- 04
Inventory pooling
- 05
Centralised control
- 06
Transshipment
Worked example · free
Measure a pooling gain
- 2Calculate decentralised stock.
- 2Compare with pooled stock.
- 2State the service condition.
Key terms
- Direct Shipment
- Movement from source to customer without an intermediate warehouse.
- Cross-Docking
- Rapid transfer through a facility with little or no storage.
- Inventory Pooling
- Sharing stock so variation can offset across demands.
- Centralised Control
- Systemwide decisions made using network information.
- Transshipment
- Moving stock between peer locations to meet demand.
Distribution Networks and Inventory Pooling FAQ
What does direct shipment save?
It can avoid facility cost and handling, but may increase small shipments and remove risk-pooling benefits. Evaluate both inbound and outbound transport and the source response capability. Product urgency, value density and customer distance can reverse the decision, so state the item and service conditions rather than treating direct flow as universally lean.
Why is cross-docking demanding?
Inbound and outbound schedules must align, information must be accurate and transport must respond quickly. When synchronisation fails, freight waits and the facility behaves like an unplanned warehouse. Storage then appears without the planned inventory policy.
Is pooling the same as centralisation?
No. Pooling concerns shared inventory, while centralisation concerns decision authority. Transshipment can create a virtual pool without one physical stock point, and control can be centralised across several facilities. Test visibility, transfer time and ownership separately because a central decision cannot create a practical pool when stock cannot move to the demand point quickly enough.
Exam move
Draw direct, stored, cross-docked and pooled networks. Under each, list facility, transport, inventory and response consequences before selecting a topology. Add one slow, low-value product and one urgent, high-shortage-cost item to see how the preferred design changes. For cross-docking, write the inbound timing, outbound schedule and information link that must align; then describe what happens when one fails.
For pooling, compare demands that peak at different times with demands that rise together, and state why correlation changes the protection-stock gain. Keep centralised decision authority separate from physical inventory location. Build a virtual-pooling case with shared visibility and transshipment, then test whether transfer time meets the promise.
Finish every network answer by showing the cost shift: which facility cost disappears, which transport leg grows, which inventory is released and which response condition must still hold. A topology is defensible only when all four move together coherently.
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