Differences between Drive In and Drive Through racking

09 Sep.,2024

 

Differences between Drive In and Drive Through racking

Among the different types of compact storage systems to optimise the available space in a warehouse are Drive In and Drive Through racking.

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Both systems share many common features and elements but their operation and applications differ greatly from one another. We will look at their common points and, particularly, their differences.

Advantages of compact systems such as Drive In and Drive Through

Both Drive In and Drive Through racking systems come under the category of compact storage systems, i.e., solutions which due to their characteristics manage to compact the space compared to conventional storage solutions.

The following are also considered compact systems: Mobile Pallet Racking, Live Pallet Racking (FIFO) and Push-Back Racking (LIFO), the AR Pallet Shuttle system and Very Narrow Aisle pallet racking (VNA).

All these compact racking systems share the following advantages:

Optimisation of the available space:

The main advantage of compact systems is they exploit the available surface area in the warehouse to the full. Depending on the storage system chosen, this optimisation will be higher or lower.

Control of product references:

Compact systems are ideal for storing several unit loads of the same product reference.

Order in warehouse management:

Unlike adjustable pallet racking systems that allow more arbitrary warehouse management, with compact racking the precise order of each reference is an obligation.

Ideal system for controlled temperature storage:

In cold or freezing storage projects, compact storage systems are installed almost without exception, due to the optimisation of the available space and reduction in the total volume to be cooled that it allows. This enables significant savings in maintenance costs.

 

Common features between Drive In and Drive Through racking

Before exploring the differences in the operation of the Drive In and Drive Through systems, it should be highlighted that both have the same base structure, and both are also high-density storage systems designed to achieve maximum optimisation of the floor space and height of the warehouse.

In the Drive In and Drive Through structure the work aisles of the forklift are minimised and are in fact generated inside the racking itself, where the forklifts enter for loading and unloading.

The pallets are introduced in the racking at a higher level than the level where they are actually going to be deposited, and are placed on the so-called support rails on each side of the level.

Compact Drive In and Drive Through racking facilitates efficient inventory control in the warehouse, since each lane of the racking structure is dedicated exclusively to the same product reference.

Both are suitable systems when warehouse needs prioritise optimisation of the space over direct access to unit loads.

Main differences between the Drive In and Drive Through systems: FIFO or LIFO management

The main differences between Drive In and Drive Through Racking concern the warehouse management method for which they have been designed.

While Drive In racking works according to the LIFO (Last in, First out) method, the Drive Through system is installed to work with the FIFO (First in, First out) method. As a result, the Drive Through system will enable a perfect stock rotation, while the Drive In system will have low rotation of goods.

Drive In racking is the most common compact system due to its simplicity. Its structure has only one access aisle for forklifts which is used for loading and unloading the pallets. Operating with the LIFO system, the last pallet deposited on the racking will be the first one to be unloaded from that aisle, so product rotation will be low as already mentioned.

By contrast, in Drive Through racking, access to the work aisle is via either of the 2 ends, with one being the access for loading and the other for unloading. This means the management method is FIFO, where the first pallet deposited on the racking will be the first one to be unloaded, therefore giving the system perfect stock rotation.

Another of the differences between both systems is the space needed for their installation. The Drive In system can be installed on a smaller available surface area than that required for the Drive Through system, because as loading and unloading occurs at the same entry point, it will only be necessary to leave one of the ends accessible, so the structure can be installed up against the wall of the warehouse.

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Applications of Drive In Pallet Racking

The characteristics of the Drive In storage system make it the ideal solution for companies whose warehouses have low product rotation, generally non-perishable products or with no early expiry date.

It is therefore a very good solution for optimising space and storing products whose value is not affected by longer or shorter storage times.

Some examples of products that fulfil these characteristics and for which Drive In racking is a perfect solution are homogeneous and non-perishable goods, such as construction material (cement, brick, etc.), DIY goods, metal products, etc.

Applications of Drive Through Pallet Racking

Drive Through racking, in contrast, due to its operation using the FIFO method, is an ideal system for installing in warehouses that require a high product rotation. Unlike the Drive In system, this perfect stock rotation makes it a very interesting alternative for storing perishable products or products whose value depreciates over time.

Consequently, the Drive Through system is normally used for the storage of food, drink or chemicals to ensure that the first unit load to be stored will be the first one to be shipped from the warehouse.

Moreover, the common features of both systems mean that both the Drive In and Drive Through systems are regularly used in warehouses with reduced space or where the cost of the floor space is high, and in companies that require cold or freezing storage for their products.

9 Pallet Racking FAQs

9 Most Frequently Asked Questions About Pallet Racking Systems

Many businesses struggle with the ongoing challenge of making the most of their warehouse space. Traditional storage methods can easily become disorganized and inefficient. Pallet racking systems are a great solution as they maximize vertical space and streamline inventory management.

However, choosing the right type and configuration of pallet racking can be complex. To simplify this process, we address the most common questions about these storage solutions, enabling you to make a more informed decision tailored to your needs.

What are the Different Types of Pallet Racking Systems?

Pallet racking systems are available in various configurations to accommodate different storage requirements and spatial limitations. The most widely used types are:

  • Selective pallet racking systems. These versatile systems are the backbone of many warehouses. Selective racks feature parallel rows of upright frames with adjustable beams, allowing easy access to each pallet from a dedicated aisle.
    This design facilitates efficient product rotation, making selective racks ideal for warehouses with frequent pallet movements and retrieval operations.
  • Drive-in and drive-through racking systems. Drive-in and drive-through racking systems allow businesses to maximize vertical space and achieve high-density storage. These systems eliminate the need for multiple aisles by allowing forklifts to enter the rack structure.
    In a drive-in system, forklifts can access pallets from one side, while drive-through racks enable access from both ends, streamlining material handling and increasing operational efficiency.
  • Push-back racking systems. Push-back racking systems are designed with a &#;last-in, first-out&#; principle and offer high-density storage and easy accessibility. When a new pallet is loaded from the front, it pushes the existing pallets back, creating a compact and organized storage solution.
    This system is suitable for warehouses with a high turnover of specific products or those operating in a first-expiry, first-out (FEFO) inventory management strategy.

How to Choose the Appropriate Pallet Racking System?

Selecting the appropriate pallet racking system is crucial for optimizing your warehouse operations. Here are some key considerations:

  • Warehouse layout and size. Evaluate your available floor space, ceiling height, and aisle dimensions. These factors will be crucial in determining the most suitable racking system.
    For example, smaller warehouses with limited floor space might benefit from high-density solutions like drive-in or push-back racks. In contrast, larger facilities with more aisle space might prefer selective racking systems.
  • Product characteristics. Heavy or irregularly shaped items may require specialized racking solutions like cantilever racking to accommodate their unique characteristics. These solutions ensure safe and efficient storage while preventing damage or instability.
  • Material handling equipment. Ensure compatibility between your racking system and the forklifts or other material-handling equipment used in your warehouse.
    Factors such as aisle width, lift height, and maneuverability should be considered to facilitate smooth operations and prevent potential accidents or bottlenecks.
  • Growth projections. As your business grows, so will your storage requirements. Choose a scalable pallet racking system that can adjust to your future growth and evolving inventory needs.
    Opt for modular systems that offer easy reconfiguration or expansion. This flexibility will help you keep pace with changing demands and stay ahead of the curve.

How Much Weight Can Pallet Racks Hold?

The load capacity of pallet racks varies depending on their design, materials, and construction. Most standard pallet racks can safely support between 2,000 and 4,000 pounds per bay level. Always consult the manufacturer&#;s specifications and adhere to the recommended weight limits for your specific racking system.

Overloading pallet racks can compromise structural integrity, leading to potential safety hazards and product damage. Implementing safety features like load-level indicators and conducting regular inspections can help prevent overloading and ensure the longevity of your racking system.

What Safety Protocols are Required for Pallet Racking Systems?

Safety should be a priority when working with pallet racking systems. Standard safety protocols include:

  • Proper installation and maintenance. Ensure your racking system is installed according to manufacturer guidelines and industry standards. Regular inspections and maintenance are essential to identify and address any potential issues.
  • Employee training. Provide comprehensive training to all personnel operating and maintaining the pallet racking system, emphasizing safe handling practices and load management.
  • Protective equipment. To safeguard workers in the warehouse environment, implement appropriate personal protective equipment (PPE), such as hard hats, steel-toed boots, and high-visibility vests.
  • Load securement. Properly secure and stabilize pallets on the racks to prevent accidental falls or collapses, which can lead to severe injuries and damage.

How Do You Arrange Items on Pallet Racking Systems?

Effective stock organization is crucial to maximize the benefits of your pallet racking system. Here are some strategies to consider:

  • Product rotation and accessibility. Arrange products based on their demand and turnover rates. Place fast-moving items in easily accessible locations to streamline picking and restocking processes.
  • Weight distribution. Distribute heavier loads evenly across the racking system to maintain structural integrity and prevent uneven loading, which can lead to instability or collapse.
  • Aisle management. Maintain clear and organized aisles to facilitate efficient material handling and prevent congestion, which can impede productivity and pose safety risks.
  • Product grouping and labeling. Group similar products on your pallet racks and implement a clear labeling system. This approach simplifies inventory management, reduces the time spent searching for specific items, and minimizes the risk of picking errors.

What are the Costs Associated with Pallet Racks?

The costs of pallet racking systems can differ greatly depending on several factors, including:

  • Size and capacity. The size and load capacity of the pallet racking system are major cost drivers. Larger racks with higher weight capacities typically require more materials, reinforcement, and engineering, resulting in higher upfront expenses.
    However, investing in a system with appropriate size and capacity can provide long-term benefits by accommodating your current and future storage needs.
  • Materials. Pallet racks are made of various materials, such as steel, aluminum, and composite, affecting the system&#;s cost, durability, and corrosion resistance.
    Steel is commonly used for its affordability and durability. Aluminum and composite materials, though pricier, provide better strength-to-weight ratios and greater resistance to environmental conditions.
  • Customization. If your warehouse requires specialized racking solutions or custom configurations to accommodate unique product shapes, sizes, or storage requirements, the costs may be higher than off-the-shelf options.
    However, customized solutions can provide major operational advantages and optimize space utilization, potentially offsetting the initial investment.
  • Installation and setup. Labor costs can contribute to the overall investment, depending on the complexity of the racking system and the need for professional installation services.
    Proper installation is crucial to ensuring the structural integrity and safety of the system, so it is advisable to engage experienced professionals for this task.
  • Accessories and safety features. Additional components, such as wire mesh decking and safety barriers, can enhance the functionality and safety of your pallet racking system but may increase the overall costs.

Are There Industry Standards for Pallet Racking Systems?

Yes, industry standards and regulations govern the design, installation, and maintenance of pallet racking systems to ensure safety and compliance. These standards are typically set by material handling and storage associations.

The Rack Manufacturers Institute (RMI) and the American National Standards Institute (ANSI) provide guidelines and specifications for pallet racking systems. The RMI/ANSI MH16.1 standard covers structural design, load capacity, safety clearances, and maintenance requirements.

Adhering to these industry standards is crucial for ensuring the safety and longevity of your pallet racking system and maintaining compliance with local building codes and regulations. Failure to comply with applicable standards can cause safety hazards, structural failures, and potential legal consequences.

Is There a Maximum Height for Pallet Racking Systems?

The maximum height for pallet racking systems is typically determined by several factors, including:

  • Warehouse ceiling height. Your warehouse&#;s ceiling height determines the maximum allowable height for your racking system. Maintain sufficient clearance above the top beam level to ensure there&#;s enough space for sprinkler systems, lighting fixtures, and any other overhead obstructions or equipment.
  • Load capacity requirements. As the height of the racking system increases, the structural demands and load-bearing capacity requirements also increase.
    Taller racks may require additional reinforcement, heavier-duty uprights, or support measures to maintain structural integrity and prevent potential collapse under heavy loads.
  • Building codes and regulations. Local building codes and fire safety regulations often impose height restrictions for pallet racking systems to ensure adequate clearance for sprinkler systems, emergency access, and other safety considerations. These regulations vary by region and must be carefully adhered to.

While there is no universal maximum height, most pallet racking systems range from 15 to 50 feet in height. Consult with a pallet racking specialist or local authorities to determine the appropriate height for your specific warehouse and storage needs.

Can Pallet Racks be Easily Installed and Dismantled?

One key advantage of pallet racking systems is their modular design, which allows for relatively easy installation and dismantling. Most modern pallet racks are designed with a boltless or clip-together construction, eliminating the need for extensive welding or permanent fasteners. This modular approach offers several benefits, such as:

  • Flexibility. Pallet racks can be reconfigured, expanded, or downsized as your storage needs evolve without major renovations or demolition. This flexibility allows you to adapt your storage solution to accommodate new product lines, changing inventory levels, or shifts in operational requirements.
  • Portability. If you need to relocate or restructure your warehouse, pallet racks can be dismantled and reassembled in the new location. This portability minimizes disruptions to your operations and reduces the need for costly replacements or new installations.
  • Cost-effectiveness. The ability to reuse and reconfigure existing pallet racks reduces the need for frequent replacements, saving you money in the long run. The modular nature of these systems also often requires less labor and installation time, further contributing to cost savings.

Maximize Your Warehouse Efficiency With Pallet Racking Systems

This overview of pallet racking FAQs has given you a solid foundation in understanding these innovative storage systems. For more insights, explore our blog. If you&#;re looking to turn this knowledge into practical outcomes for your warehouse, Shelving + Rack Systems, Inc. can assist you.

Our storage specialists have extensive pallet racking design and implementation expertise. We can guide you through the selection process, ensuring you choose a system that perfectly aligns with your requirements.

Contact Shelving + Rack Systems, Inc. at (800) 589- to discuss your warehouse storage needs and unlock your facility&#;s full potential.

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