Industrial Steel Storage Rack Safety: ANSI MH16.1-2023

In warehouses, manufacturing facilities, and distribution centers, industrial steel storage racks safely support thousands of pounds of inventory, making them essential to modern material handling systems. To assure these systems safely support heavy loads and withstand impacts, engineers and facility managers rely on ANSI MH16.1-2023: Design, Testing, And Utilization Of Industrial Steel Storage Racks, the American National Standard that establishes requirements for the design, testing, and utilization of industrial steel storage racks. Understanding this standard helps organizations improve warehouse safety, prevent rack collapses, and maintain regulatory compliance.

The Role of Industrial Steel Storage Racks in Modern Warehousing

In 2023, over 870 million square feet of warehouse space in the U.S. and Canada—equivalent to roughly 15,000 football fields—were equipped with industrial steel racking systems designed to optimize storage and improve operational flow. Constructed from steel and with durable coating (powder-coating can prevent rust and oxidation), these racks are ideal for safely and efficiently hold heavy duty items like building supplies (e.g., forklifts). They maximize vertical space, are easy to reconfigure, and resist damage, making them ideal for warehouses and industrial environments. Other benefits of industrial steel storage racks include:

• Durability: can sustain an impact from heavy duty machinery and from bulky items such as automotive parts, machinery, and tools. Also, certain steel varieties (aluminum and galvanized steel) have corrosion-resistant qualities, ensuring they can be used in humid environments, like cold storage.
• Modularity: are modular by design, meaning they can be easily adjusted, reconfigured, and relocated. Modular shelving is also customizable, so you can replace the decking material, add storage bins, or change the height according to your needs.
• Safety: have greater load capacities than other storage options, like wood and plastic, and steel storage racks can withstand heavy loads. Higher weight capacities of industrial steel storage racks help improve warehouse safety, reducing the risk of overloading and collapse.
• Visibility: increase visibility in the warehouse (which also helps improve employee safety).
• Mobility: transport goods or create additional floor space as many shelving units are available in static and mobile configurations.

In sum, steel storage racks are commonly used because they are exceptionally strong, durable, and cost-effective, allowing for maximum, safe, and organized storage of heavy, large, or high-volume inventory. Standards such as ANSI MH16.1-2023 play an integral role in assuring these racks are engineered to withstand heavy loads and dynamic forces, promoting safer material handling practices and compliance with regulatory requirements.

What Is ANSI MH16.1-2023?

ANSI MH16.1-2023 specifies requirements for the structural design, testing, and utilization of industrial steel storage racks, including movable-shelf racks, rack-supported systems, and automated storage and retrieval systems (sometimes referred to as “stacker racks”) constructed of cold-formed and/or hot-rolled steel structural members.

ANSI MH16.1-2023 is referenced by the International Building Code (IBC) for safe design and installation of industrial steel storage racks.

Types of Storage Racks Covered

The standard applies to several industrial racking systems, including:

• Pallet-flow racks
• Push-back racks
• Case-flow racks
• Pick modules
• Rack-supported platforms
• Automated storage and retrieval systems (AS/RS)

This American National Standard is also intended to be applied to the design of the storage rack portion of any rack structure that provides support to the exterior walls and roof.

ANSI MH16.1-2023 does not apply to other types of racks, such as drive-in or drive-through racks, cantilever racks (see ANSI MH16.3 for guidance on cantilever racks), portable racks, or to racks made of material other than steel.

ANSI MH16.1-2023 Guidelines for Designing Safe Industrial Steel Storage Racks

ANSI MH16.1-2023 states that industrial steel storage rack structures should be designed using the provisions for Allowable Strength Design (ASD) or the provisions for Load and Resistance Factor Design (LRFD). It is important that they are designed for stability, supporting the product load. The standard further maintains that all computations for safe loads, stresses, and deflections should be made in accordance with conventional methods of structural design. This is specified in ANSI/AISI S100 for cold-formed steel components and structural systems and ANSI/AISC 360 for hot-rolled steel components and structural systems.

Common Warehouse Rack Damage and Safety Risks

A visual inspection of a warehouse racking system is useful to get information of any areas in the rack structure that need attention. Damage to rack components—such as beams, anchors, columns, braces, decking, and baseplates—as well as missing hardware, leaning frames, or overloaded systems can significantly compromise the stability and load capacity of warehouse racking. Consequently, regular inspections and adherence to the requirements in ANSI MH16.1-2023 help detect these issues early and reduce the risk of rack failure or collapse. The various types of damage that you should visually be on the lookout for include the following:

Beam Damage

Beam damage — such as bent, cracked, or dented horizontal load members—can severely reduce the load-carrying capacity of a racking system. This may occur from forklift impacts or overloading. ANSI MH16.1-2023 emphasizes proper design and testing of beams to withstand applied loads and dynamic forces, but regular inspection and maintenance are also critical to prevent collapse.

Missing Components

Missing components — such as cross-aisle ties, wall ties, beam safety locking pins, and crossbars— are essential to the rack system’s stability and safety. Missing any of these can compromise structural integrity, increase sway under load, or allow beams to dislodge. ANSI MH16.1-2023 requires these components be installed and maintained according to manufacturer specifications to ensure safe operation.

Footplate (or Baseplates) Damage

Footplate (or baseplates) damage — such as when they are bent, missing or cracked— causes the rack to be vulnerable to tipping or collapse. ANSI MH16.1-2023 outlines load distribution expectations and anchoring strength that depend on intact, properly installed footplates

Anchor Damage

Anchor damage — such as broken, loose, or missing anchors—reduce the system’s ability to resist movement, which can lead to frame instability. ANSI MH16.1-2023 includes guidance on anchor strength, spacing, and inspection intervals to maintain rack performance and safety.

Diagonal and Horizontal Strut Issues

Bent, missing, or detached struts significantly reduce the rack’s rigidity and can result in leaning frames or progressive failure. ANSI MH16.1-2023 outlines frame design requirements that depend on the proper function of these braces.

Leaning Frames

Frames that are visibly out of plumb or alignment often indicate underlying damage, uneven loading, or issues with anchoring or floor settlement. Leaning racks are a major red flag for imminent structural failure. ANSI MH16.1-2023 requires that racks be installed plumb and level, and periodic inspections should detect and address leaning before it worsens.

Damaged Decking

When decking is bent, corroded, sagging, or cracked, it can fail under weight, leading to falling products or injuries. While ANSI MH16.1-2023 focuses on structural members, safe decking is considered part of a compliant system when evaluated as a whole.

Overloaded Frames and Beams

Overloading beyond the rated capacity (either per beam level or total bay load) can cause deflection, beam fatigue, or sudden collapse. ANSI MH16.1-2023 includes load capacity calculations based on frame design, material strength, and seismic zoning. All racking should have clearly posted load signage and be used within design limits.

Column Damage

When dented, crushed, or split, the structural integrity of columns is compromised. Damage is often caused by forklift impact and is a leading cause of rack failure. ANSI MH16.1-2023 specifies acceptable design limits, including options like column protectors, and encourages regular inspections to detect deformation early.

Preventing Warehouse Rack Failures with ANSI MH16.1-2023

Adhering to ANSI MH16.1-2023 helps prevent rack collapses, which are a common cause of OSHA warehouse violations and accidents. To prevent these incidents, materials must be stacked, blocked, and interlocked correctly and stored within designated height and weight limitations.

Complying with ANSI MH16.1-2023 not only assures rack systems are engineered to withstand expected loads and impacts, but also that they are maintained to prevent failures. A single weak point—whether it is a missing pin or a damaged column—can result in costly accidents, injuries, or product loss. As such, using racks compliant with ANSI MH16.1-2023 helps businesses reduce the risk of structural failures, protect workers, and extend the lifespan of storage systems.

Where to Find ANSI MH16.1-2023

ANSI MH16.1-2023: Design, Testing, And Utilization Of Industrial Steel Storage Racks is available on the ANSI Webstore.

ANSI MH16.1-2023 was developed by the Material Handling Industry of America (MHI).

Please direct any technical questions relating to this American National Standard to the developer. You can find the contact information for all ANSI-accredited standards developers here: List of ANSI-Accredited Standards Developers (ASDs).

For further information, please refer to: Who to Contact for Standards Related Questions.

You can also learn more about ANSI MH16.1-2023 in our video below: