Distribution Center Definition for the Warehousing Industry presented by Apparel Search 

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A distribution center for a set of products is a warehouse or other specialized building, often with refrigeration or air conditioning, which is stocked with products (goods) to be re-distributed to retailers, to wholesalers or directly to consumers. A distribution center is a principal part, the "order processing" element, of the entire "order fulfillment" process. Distribution centers are usually thought of as being "demand driven". A distribution center can also be called a warehouse, a DC, a fulfillment center, a cross-dock facility, a bulk break center, and a package handling center. The name by which the distribution center is known is commonly based on the purpose of the operation. For example a "retail distribution center" normally distributes goods to retail stores, an "order fulfillment center" commonly distributes goods directly to consumers, and a cross-dock facility stores little or no product but distributes goods to other destinations.

Distribution centers are the foundation of a "supply network" as they allow a single location to stock a vast number of products. Some organizations operate both retail distribution and direct-to-consumer out of a single facility, sharing space, equipment, labor resources and inventory as applicable.

The way a typical retail distribution network operates is to have centers set up throughout a commercial market. Each center will then serve a number of stores. Large distribution centers for companies such as Wal-Mart serve 50
125 stores. Suppliers will ship truckloads of products to the distribution center. The distribution center will then store the product until needed by the retail location and ship the proper quantity.

Since a large retailer might sell tens of thousands of products from thousands of vendors, it would be impossibly inefficient to ship each product directly from each vendor to each store. Many retailers own and run their own distribution networks, while smaller retailers may outsource this function to dedicated logistics firms that coordinate the distribution of products for a number of companies. A distribution center can be co-located at a logistics center.


Large distribution centers might receive and ship more than ten thousand truckloads each year, with an individual store receiving only a couple trucks per week up to 20, 30 or more per week. The distribution centers can range in size from less than 50,000 square feet (5,000 m2) up to the largest approaching 3 million square feet (300,000 m).


Although the primary role of a distribution center is to receive large quantities of products and ship small quantities to individual stores, an important secondary role is storage. Many retailers have prioritized having as many items in stock at one time as possible. To conserve space, minimize inventory costs, and maximize the variety they offer the retail might only stock one or a few items of a particular product. This requires the ability to ship a replacement quickly once an item is sold. By keeping product on hand in the distribution center, the retailer can ship a replacement almost immediately after a product is sold.

Storage locations and storage containers
Goods (products) arrive and are stored in a distribution center in varying types of storage locations and containers suited to the product characteristics and the amount of product to be transported or stored. These types of locations and containers have specific industry accepted names. There are specialized pieces of equipment (material handling equipment or MHE) that are used to handle the various types of containers. The following is a list of some of the names and characteristics of common storage containers:

  • Intermodal containers (shipping containers) are used for the efficient transportation of goods. There are standards that specifify the volume and dimensions of containers to facilitate efficient handling.

  • Pallets are one of the most commonly used means to store and move product in a distribution center. There are many specialized devices (MHE) used to handle pallets - see forklift truck, pallet jack, pallet inverter, and unit load ASRS. Pallets are stored on the floor, may be stacked, and may be stored in pallet rack

  • Gaylords are large single boxes usually connected or attached to a pallet

  • Cases and cartons are boxes usually containing many items. In distribution centers there is a generally accepted distinction made between the terms carton and case although both are boxes. Goods are received and stored in cartons. Goods are shipped in cases. A stored carton is called a case once it has been picked or pulled for shipment.

Totes are reusable containers used to hold and transport goods.

Storage volume
In addition to shipping quickly, preparing for busy shopping seasons requires retailers to stock up on product ahead of time. For most retailers, the Christmas shopping season is the busiest of the year. Ahead of this time, a distribution center might double the amount of inventory on hand and then draw this level down through the shopping season. This strategy is especially important for imported items. With lead times measured in weeks or months, stocking these products in a distribution center is often the only way to maintain in-stocks at the store. New seasons, holidays or special promotions may also prompt a retailer to store specific items prior to a large rollout or demand forecast.


Another way to look at a distribution center is to see it as a production or manufacturing operation. Goods arrive in bulk, they are stored until needed, retrieved and assembled into shipments. The efficient processing of a distribution center can greatly impact the final price of product as it is delivered to the end user. Efficient processing not only directly impacts the cost of goods through reduced labor it indirectly impacts the cost of goods through reduced inventory. Inventory represents an investment with its associated investment interest or inventory carrying cost. Reducing the processing time of order processing can directly reduce the amount of inventory necessary to be stocked in the operation.


The most efficient method of distribution would be shipping a full truckload or railcar directly from the manufacturer to the retailer. After this, the next most efficient method would be to ship a full truckload to a distribution center, unload full pallets of products and immediately load the pallets onto trucks that are going to individual stores. Both of these methods can only be used on very high volume items. Most products cannot be delivered in this manner and pallets, or even individual boxes, must be broken down and divided.

Once a full pallet must be broken apart, the costs of handling the product can increase quickly. Many distribution centers use large sortation systems with miles of conveyor to move products through the facility and into a truck. They also may have automated equipment for de-palletizing and re-palletizing product. Some of the most sophisticated systems can convey product straight into storage racks and then convey out of the racks to trucks, all automatically. With a wide variety of product sizes and weights, these systems are designed to handle a specific range of products. Very large/small or heavy/light products require varying degrees of manual handling.

As the process of handling involves more steps and is more manual, the cost increases. Storing products instead of receiving and immediately shipping them, adds cost. Firms must determine where lost sales from not having product on the shelves are balanced by the increased handling and storage costs.

Distribution center organization

All distribution centers have three main areas and may have additional specialized areas. The three main areas are the receiving dock, the storage area and the shipping dock. In small organizations it is possible for the receiving and shipping functions to occur side by side, but in large centers, separating these areas simplifies the process. Often a distribution center will have dedicated dock doors for each store in its shipping area. The receiving area can also be specialized based on the handling characteristics of freight being received, whether the product is going into storage or is going straight to a store or by the type of vehicle delivering the product.

Planning a distribution center

A number of key components go into the overall planning of a distribution center in order to maximize its efficiency. If the distribution center is relying on a conveyor system suspended from the ceiling, consideration needs to be given to the weight-bearing capacity of the ceiling joists. If the conveyor system runs along the floor, than consideration needs to be given to where columns are placed in the design stage, particularly as they relate to the flue space between pallet rack frames. Other considerations in the planning should include attention to such areas as slotting, product replenishment, storage media, and power requirements.

Simple distribution center outline

Because many distribution centers service both large and small clients, especially those which store a specific type of service as opposed to those which serve a specific company, roles and departments are generally more complicated. A simple distribution center which serves many clients a specific theme or type of service may include:

  • Goods In: Usually containing specialised container unloading equipment and workers, including pallet wrapping, conveyor belt unloaders (as used on 40ft shipping containers), forklift drivers and administrative staff

  • Bulk: As a rule, such a department would control and ship larger orders, or orders which contain only full cartons/boxes. Such a department would contain FLT drivers to load containers and wagons, and Man-Up or Combi forklift trucks to unload full pallets from warehouse racking.

  • Break-bulk: Break Bulk(break bulk is also known as split case) is a lower capacity version of the Bulk department, orders usually contain part boxes, or items which do not necessitate pallets. Due to the number of smaller customers a distribution center may serve, a break bulk department may need more workers than Bulk do. A break-bulk department usually uses trolleys or, for palleted/heavy orders, small electric PPT or Walkie Low Lift trucks. Items shipped by break-bulk are usually stored in pick, which are usually the bottom two pick-faces of warehouse racking. A Pick-Face is the space on such a racking system that a pallet can be loaded onto.

  • Export: An export department would control orders which are leaving the country of the distribution center, this department is almost identical in function to a bulk or break-bulk department, however workers in this department would have to build pallets to conform to different standards and sizes. An export department would also use different shipping containers or haulage firms.

  • QA: A QA department would perform periodic checks of random samples of stock to check quality, this includes from the warehouse racking, Goods In and returned stock. This department may also take on cycle count duties to find missing stock.

  • Administration

  • Packing and Production: In many distribution centers it is not feasible to store stock in many different packaging styles or quantities, and whilst it may cost a customer more to do so, many customers, such as supermarkets, prefer their own packaging on stock. Because of this, packing benches are used to take raw items, such as a box of balloons, and pack them at a specific unit quantity, which are then packed into cartons and labeled accordingly for a customer. In many circumstances this may be cheaper to do at a distribution center than for a customer or client to do.

Other departments that a distribution center may have include:

  • Transportation
    arranges and coordinates shipments in and out of the DC

  • Dedicated Product Departments
    divisions can be based on handling characteristics or storage characteristics. For example, refrigerated and non-refrigerated [Meat & Produce, Frozen, Dairy/deli, Dry] each of the three areas have both shipping and receiving departments as well.

Distribution Centers also have a variety of supporting departments. These include human resources, maintenance/facilities operations, production control and accounting.

Distribution jobs

A distribution center will have a General Manager that manages the facility. This individual will then have a number of department managers that report directly to them. Most distribution centers divide the staff into two categories - direct labor and indirect labor. The direct labor staff executes the distribution processes, the indirect labor staff supports the direct labor staff. Each department is then composed of supervisors and warehouse workers. The "direct labor" jobs of a warehouse can include:

  • Unloader - unloads trucks and breaks down pallets as needed, with various pieces of power equipment

  • Receiver - inventories and tags unloaded pallets using a mobile cart computer unit and printer

  • Hauler - transports received pallets with equipment from the receiving dock to the storage racks

  • Putaway Driver - puts product into racks with forklift

  • Replenishment Driver - Pulls product from the racks and places into the "pick slot" with forklift

  • Orderfiller - picks product from the "pick slot" by hand and moves with power equipment

  • Loader - wraps the orderfilled pallets and loads trucks, using equipment

Examples of the many other "Indirect labor" departments and jobs within a warehouse can include:

  • Supervision - floor (process) supervision, indirect labor supervision

  • Human Resources - employment office and employee benefits

  • Facilities and Housekeeping - maintenance of building and

  • Inventory Management - tracking and placement of product

  • Quality Assurance - inspection and acceptance of incoming and outbound product

  • Asset Protection - Building security and loss prevention

  • Safety - insurance of safe operating practices

  • Equipment Maintenance - electrical, mechanical and pneumatic maintenance of MHE

  • Operations Research - Industrial engineering, process improvement, labor standards

  • Information Technology - support of information systems

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The above article is licensed under the GNU Free Documentation License. From Wikipedia, the free encyclopedia (Distribution center - Wikipedia, the free encyclopedia).  4/20/10 Modified by Apparel Search.

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