Getting the Most Out of Load Mapping

Top 10 tips for choosing the right solution for your operations.


Over the past decade, many distribution centers have turned to software tools for automated truck load mapping—also known as load diagramming or load planning. An accurate load map helps DC personnel know where to place each case assigned on a trailer for outbound loads. Multiple stops, trailer compartments, side doors, mixed product rules, axle weight limitations, and customer requirements all factor into the complexity of the load mapping challenge.

When considering a new software solution for load mapping, or simply ways to improve what you are now doing, one or all of these key factors should bear attention:

 

1. Dynamic Order Volumes

The fact is that no shipping day is exactly like another. So, Monday’s excellent load map may not work so well on Tuesday, or even for the following Monday. An effective load mapping tool should adapt to every day’s changing demands, using logic to find the most efficient blueprint to meet that day’s demand.

 

2. Varying Equipment Profiles

Most distribution operations use a variety of trailer types and straight trucks. Not only does equipment come in a variety of lengths, but several other critical factors vary as well. Side doors are located in different spots, bulkheads may be fixed or adjustable within a certain range, and overhead structures such as evaporators or door storage may limit capacity in different areas. Load mapping should recognize these various characteristics and build a load plan that fits within these constraints.

 

3. Visualizing the Load

The most readily understandable way to visualize any given load plan is by displaying key information such as stops and case quantities in a simple grid. The grid is an intuitive format that allows loaders and drivers to immediately see the big picture as well as the details, all at once. But I don’t think I’ve ever seen two diagrams exactly the same. Each warehouse needs to see certain types of information and cares little about other types. So, the contents of the visual diagrams should be flexible enough to show what your operation needs to see.

 

4. Manual Overrides

Everyone likes a simple one-button answer. But, there are always exceptions such as late orders or a one-time request. It’s essential to have the option to easily move cases or even whole pallets around to meet those needs without slowing down fast-paced operations.

 

5. Axle Weights

Some warehouse employees seem to have a sixth sense for loading a trailer just right to avoid overloading the axles. However, it’s probably the single hardest thing to do without an automated tool. Overloaded axles incur costly fines or costly reloading labor. Your solution should be able to automatically build loads that avoid overloading an axle, and should automatically recalculate accurate estimates of the axle loadings with each manual change to the diagram.

 

6. Linking Load Plans to Selection

Optimizing one area of any logistics operation in isolation is a risky endeavor. Ideally, after building a load plan, pallets should be built to match the contents of the diagram. However, too many operations silo the selection task queue in a WMS, missing fuller optimization. In some operations, by selecting product in the correct sequence, pallets can be live-loaded onto the trailer, bypassing the expensive staging operation.

 

7. Integration with Transportation

Just as load mapping must interface with the selection process on the front-end, it must also integrate with the dispatching and transportation process on the back-end. The load planning process forms a bridge from the warehouse to transportation, connecting two functions that are notorious for their separation. Drivers should refer to load maps not just for stops, but also any special delivery instructions.

 

8. Flexible Capacities

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