Traditional parcel warehouses were designed around a predictable package profile: boxes that could be conveyed, sorted, accumulated and loaded with a high degree of automation. But today, that profile is increasingly diverse. Consumers are ordering large items with greater frequency, and oversized packages aren’t just bigger versions of conventional items. They often require fundamentally different handling, sortation, transportation and delivery.
The surge in bulky packages is partially driven by the expansion of e-commerce retailers into product categories that consumers used to primarily purchase in brick-and-mortar stores. Furniture and appliances, for example, are increasingly purchased online and delivered directly to homes rather than transported by consumers after an in-store purchase.
But parcel and delivery companies are recognizing that large-item delivery represents a distinct market opportunity. Some are investing in facilities and operating models specifically designed around these products, while some specialized providers have emerged to handle final-mile shipping of non-conveyable, difficult-to-transport items.
When it comes to describing a parcel, the term “non-conveyable” is broader than simply meaning oversized.
Whether an item can move through a conventional parcel system depends on its dimensions, weight, shape, surface and the material-handling equipment. Traditional parcel systems are designed around dimension and weight limits. A common benchmark is roughly 130 inches (length plus girth) and 70 pounds. Within those parameters, traditional conveyors, scanners, sorters and other equipment can move packages reliably and quickly.
But even a package that technically falls within those specifications can present problems. A tire, for example, might fit on the conveyor system, but its high-friction surface and unusual shape can prevent it from behaving like a cardboard box.
When a product can no longer move reliably through a conventional conveyor system, there’s a lot more manual handling involved. This can significantly affect warehouse economics because parcel operations heavily depend on automation to achieve target throughput levels. Replacing an automated sortation process with manual handling increases labor requirements and can increase risks of injury, product damage and inefficiency.
The Space Problem Is Bigger Than the Box
Another challenge oversized packages create is the amount of physical space they occupy. A conventional parcel warehouse is designed around the dimensions and flow of traditional package mixes. Conveyors have defined widths. Sortation equipment occupies specific footprints. Dock doors, staging and trailer loading areas are positioned to support a particular flow of goods.
When a large item is introduced into that environment, the issue isn’t just whether it fits on the conveyor. The facility layout and traffic flow become problematic. For example, a piece of furniture might not fit through the existing sortation path. It might require additional clearance around turns and equipment. Or it might need to be staged near a loading dock door because repeatedly moving it through the building is impractical.
These staging requirements can create additional problems. Oversized packages might end up positioned along aisles or near outbound doors, reducing available space for other products. Additionally, large and heavy items can be difficult for one person to move safely, but there might not always be multiple people available when items need to be moved or loaded. As large-product volumes grow, ergonomics and worker safety considerations become increasingly important in facility design.
One response to these challenges has been the development of dedicated large-package facilities or specialized areas for oversized packages within larger buildings. Rather than forcing every product through the same infrastructure, operators can design layouts, equipment and workflows around bulky goods.
These facilities can be designed to use much wider conveyors and sortation surfaces than those found in conventional parcel buildings. Instead of relying entirely on conventional conveyors, operators can use equipment that allows packages to be redirected or manipulated more easily. For example, some systems use roller-based surfaces that provide greater flexibility in moving irregular products.
Manual handling remains an important component, however. In many cases, it’s simply more practical to move large items with carts and motorized tuggers than it is to build elaborate automated sortation systems to handle them.
Automation Doesn’t Always Make the Process Better
As oversized package volumes continue to grow, reducing labor and improving consistency through automation become increasingly attractive. But large and irregular products create a different automation equation than conventional parcels.
Consider a large item, such as an eight-foot-long bedframe. It might arrive at the dock, be moved manually to a cart, transported across the building then placed on a large automated sorter. The sorter scans the item and sends it to a particular destination, after which the item might need to be placed on another cart and moved again to the outbound door.
A simpler approach is to identify the destination when the item is unloaded, move it directly to the outbound location, and bypass the automated sorter entirely. Instead of trying to treat the product like a conventional parcel that must pass through a centralized sortation process, think of its progress through the facility as if it were an express bus route — taking the most efficient path from origin to destination without unnecessary stops.
Don’t try to automate every step. Identify the most efficient process and then determine where — or if — automation can genuinely improve it.
The warehouse is only one part of the equation. Large and bulky products typically require a different transportation and final-mile delivery model as well. Furniture and appliances, for example, are typically delivered using straight trucks equipped with liftgates rather than conventional parcel=delivery vehicles. Certain products may require two-person delivery, inside placement or installation.
The logistics model more than simply moving a bigger box through the existing parcel network. In some cases, the entire delivery process must be designed around the characteristics of the product. This is one reason why specialized last-mile providers have become increasingly visible. Large-item delivery requires different vehicles, equipment, labor models and service capabilities.
Designing the Process Before the Building
As bulky-package volumes continue to increase, one of the most important changes when planning a new facility may be conceptual rather than technological. Facility designers traditionally have had to work within existing buildings, then determine how to fit material-handling systems into those constraints. That approach can lead to compromises before the operation has even been defined.
A better approach for facilities intended to handle significant volumes of large and irregular products may be to start with a blank sheet of paper.
First, determine what the operation needs to accomplish. Once the process is understood, the building and material-handling infrastructure can be designed around it. This reverses the traditional sequence of designing a building and then trying to make the process fit. It also gives engineers more freedom to develop an efficient flow without being constrained by the dimensions or layout of an existing facility.
Flexible design has a direct impact on throughput. For example, if a building's dimensions force an outbound conveyor to be shorter than the operation requires, the result may be fewer loading positions and lower package flow. A building that looks efficient on paper can therefore impose operational limitations simply because the process was designed around the structure rather than the other way around.
The Next Opportunity: Flexibility
The future of large-package handling might not be defined by a single breakthrough technology. Instead, it could involve making the entire logistics system more adaptable.
One promising concept is greater container and vehicle flexibility. Instead of dedicating every inch of a trailer or delivery vehicle to one package type, modular dividers and supports can allow the available space to be reconfigured for a variety of package types.
The same principle can apply inside a warehouse. Rather than designing every process around a fixed package profile, facilities can incorporate more flexible pathways, staging areas and material-handling systems.
One future opportunity is autonomous equipment that can move bulky items from an unload door to their destinations, but the technology has not yet reached the necessary simplicity, reliability and cost-effectiveness. The same is true of large-item automation. To be truly effective, the system must improve the economics of the entire process, not simply automate one task.
The growth of bulky e-commerce products is ultimately a question of economics as much as engineering. Irregular products may represent a relatively small share of total parcel volume, while consuming a disproportionately large share of handling resources. In some operations, irregular products can account for roughly 20% of volume but as much as 80% of handling costs. That disparity illustrates why simply adding bulky products to a conventional parcel network can become increasingly inefficient as their volume grows.
As consumers continue to purchase larger products online, logistics networks must adapt accordingly. The best-performing facilities will likely recognize early that a large parcel isn't just a bigger box. It represents a fundamentally different operational problem — one that requires a different combination of space, equipment, labor, transportation and process design.
Mark Bosley is innovation and business development manager with LogistiQ.
