1. What is Cantilever Racking?

Cantilever Racking is an ideal structure for the storage of long, bulky and heavy products. Space Rescue have Cantilever Pallet Rack for sale in Sydney, Melbourne, Brisbane, Adelaide and Perth. The main elements of this structure are the vertical Columns (or posts), Bases, Bracing and the horizontal Arms. In particular, other terms commonly used are Cantilever Shelving, Canti Racking and Pipe Racking.

Blue and orange Cantilever Racking supporting reinforcing bars with Spigot pins fitted at arm ends.

Summary of Sizes

Columns: 2m, 2.4m, 3m, 3.6m, 4.2m, 4.8m, 5.4m & 6m (heights)

Arms: 700mm, 900mm 1200mm & 1500mm (lengths) and 260kg, 350kg, 450kg, 1000kg & 1300kg (maximum U.D.L.) per single arm)

Bases: lengths vary depending on arm length

Bracing: 900mm, 1200mm, 1500mm, 1800mm, 2100mm (column centres created)

2. Summary

Cantilever Rack employs horizontal Arms attached to vertical Columns, extending out to create multiple support levels. Bolting anchored Bases to the Columns prevents front-to-back movement, while fixing Bracing between Columns prevents side-to-side (also known as down-aisle) movement.

This structure does not require a front supporting post as you will see in Pallet Racking. As a result, access to the Arm storage levels is open & unobstructed for the easy placement and retrieval of lengthy items.

3. Specifications

a) Columns … used in Cantilever Racking

Undoubtedly, Columns are an integral part of a Cantilever Warehouse Racking structure. Furthermore, as the name suggests, they stand vertically. They maintain their upright orientation with the aid of a solid bolted connection to the column base and column bracing. A steel pin connects the Cantilever Rack arms to the Columns.

Heights (mm)

  • 2000mm
  • 2400mm
  • 3000mm
  • 3600mm
  • 4200mm
  • 4800mm
  • 5400mm
  • 6000mm

Depths (mm)

  • 200mm
  • 305mm
  • 350mm
  • 410mm


Blue enamel powder-coat paint finish to the Cantilever Shelving columns


Coil steel passes through a rollformer to make the columns, forming the steel into the required section shapes while cold, hence the name cold-rolled steel sections. Furthermore, a series of holes punched up each side of the column provides adjustability of arm positions.

b) Arms … used to create Cantilever Shelving levels

Arms attach to the Columns and play a rather important part of the Cantilever Racking structure. Of course, a series or group of arms in close proximity to one another and on the same level create an individual Cantilever shelf for products to lay on. You can store almost any length of product by initially changing the number of support arms and lastly, adjusting their horizontal spacing.

Lengths (mm)

  • 700mm
  • 900mm
  • 1200mm
  • 1500mm

Capacities (kg)

The maximum Cantilever Shelving arm capacities listed below as uniformly distributed loads (UDL) are based specifically on the arm length selected.

  • 260kg
  • 350kg
  • 450kg
  • 1000kg
  • 1300kg


Orange enamel powder-coat paint finish to the Cantilever Rack arms for sale.

Design of Arms

The arms have a small slope of up to 5 degrees incorporated in to their design. This slope goes upwards slightly from the column end of the arm to the end or tip of the arm. Hence, this prevents products from sliding or rolling off the arm level. Spigots (see below) are an accessory that aids in this also.

Arm Spigots

The Arm Spigot is a steel pin that is 150mm long. To explain, the Spigots insert in to pre-fabricated holes at the ends of the Cantilever Arms. They have a shoulder that holds a length of around 100mm of the pin proud above the arm surface. The arm spigot helps to prevent stored product from sliding or rolling off the arm. In some situations it may be advantageous to remove the spigots to get better access to the stored products. This accessory item is very easy to remove and replace in to position.

Connection of Arm to Column

Each arm ends with a U-shaped section, that is welded almost perpendicular to it, sized to fit snugly around the width of each column. A hardened steel arm pin inserts through both sides of the U-shaped section and through the holes in the column.

Elevations of Cantilever Racking showing bracing, arms, columns and bases and how they interact with each other.

Cantilever Elevations

As an illustration, these two elevations of Cantilever Racking show bracing, arms, columns and bases and how they interact with each other.

Front View (left)

Z-Shaped Bracing pattern with both horizontal and diagonal bracing, Brace to Column fixing points and Column centre to centre dimension shown.

Side View (right)

Column with multiple arm fixing holes, Arm to Column attachment, Column to Base attachment, Arm/Base side view plus Arm/Base dimensions shown.

c) Bases … supporting Cantilever Rack Columns

High strength grade bolts and nuts rigidly attach the bases to the bottom of the columns. This connection, between column and base, provides front to back rigidity of the Cantilever Racking structure. Additionally, anchoring the structures to the ground (typically a concrete slab) reduces the risk of it toppling over.

Length of the Base

We determine the length of the column bases by approximately adding the column depth to the longest arm length used on the column. Moreover, this dimension always exceed this combined measurement slightly.

Assembly of the Base

Typically, a pair of ‘C’ section lengths makes up the bases, positioned on either side of the column. Their rigidity comes from tying the two sections together with bolts and nuts through the columns, along with a joiner plate at the free aisle-side ends.


Blue enamel powder-coat paint finish to the Cantilever Racking bases for sale.

Floor Anchors

Floor anchors fix the Column Bases to the concrete slab floor. They typically consist of either a screw anchor, mechanical anchors or chemical anchor. Floor anchors are necessary to safely secure these structures and to reduce the chances of them toppling over.

d) Bracing … determines the Column Centres

The Bracing consists of horizontal and diagonal brace members. We place these brace members in a Z-shaped pattern between adjacent columns. Bracing fixed to the columns provides down-aisle rigidity to the Cantilever Pallet Racking structure. The column height dictates the number of Z-patterns required. The bracing lengths set the horizontal spacing between two adjacent columns (and two adjacent arms).

Column Centres (mm) available

  • 900mm
  • 1200mm
  • 1500mm
  • 1800mm


Blue enamel powder-coat paint finish to the Cantilever Rack bracing for sale.

Determining the Column Centre spacing required

Firstly, understanding the preferred horizontal spacing between arms for the stored product is important, as the product must not sag between arm spans. Determining the column center spacing depends on the maximum horizontal spacing required between arms to suit the stiffness of the product. Once you understand the horizontal center-to-center spacing distance of arms (and columns), you can select the brace lengths.

4. Products you can store in a Cantilever Rack

The typical use for Cantilever Warehouse Racking is to store products that are too long for Pallet Racking for example and not easily strapped to a single pallet. Suitable products will have some inherent rigidity individually or when strapped in pack form that will suit a specific arm support spacing.

The reason why this is necessary is that the shelf level is not a continuous surface as it consists of intermittent supports provided by a series of arms. It is important that the horizontal spacing between arms is close enough to prevent excessive sag or deflection over the individual spans.

Warehouse full of blue and orange coloured double sided Cantilever Racking storing long products.

Products typically found stored in Cantilever Pallet Racking include various items such as pipes, steel rods, tubing, conduit, extrusions (including metal such as Aluminium and plastic), carpet rolls, timber lengths, timber crates, timber sheets, building materials, steel lengths, sheet metal, structural steel members, reinforcing bars, and other construction materials.

5. Configuring a Cantilever Rack

Customising the size of this storage system to suit the available space in the storage facility is rather easy.

a) Length

The maximum product length stored has a direct bearing on the overall Cantilever Rack length. The two arms at the extreme ends of the product must both be explicitly providing support. Also the rack must be long enough so that the product does not have overhang on either side greater than half of the horizontal arm span.

To calculate the length of a Cantilever Rack; add the width of one column to the sum of the column centres. Hence, the sum of the column centres plus the column width equals the Cantilever Rack length.

b) Height

In this situatiion, the number of storage levels and product height dictates the column height. Factoring in the height of the top arm storage level is also essential. Considering the height restrictions of the storage facility is a must to ensure that there is sufficient clear height above the highest product when placing and retrieving it from the top level.

c) Arm lengths

It is particularly important that the products stored do not overhang the end of the arm. Selecting the correct arm length is therefore quite important. The Cantilever Shelving arm length dictates the depth of products that may stored on the level.

d) Arm capacities

Selecting the correct strength of the cantilever arms and columns is important to handle the maximum weight of the supported product. Both of these components directly impact the strength of the structure and the weight of the product stored on each level. Incidentally, column spacing directly influences the quantity of arms supporting the product.

e) Arm spacing vertically

Vertical spacing between arm levels is dependent firstly on the product height and secondly on the amount of product bowing. This is particularly important when lifting the product by forklift. With this in mind, there needs to be sufficient clearance for the product itself and the bowing down at the ends of the product created by the lifting action.

f) Strength Grades

Space Rescue have three different grades of Structural Cantilever Racking for sale. These are specifically Light Duty, Medium Duty and Heavy Duty Cantilever Shelving. Undoubtedly, what differentiates one to the other is the size and strength of the columns, bracing and arms used.

g) Types of Access

A single sided Cantilever Rack structure has arms on one side only. Positioning this structure against a wall is possible. The reason for this is that access is from one side only.

A double sided Cantilever Rack (as can be seen pictured above), has arms on both sides of the same columns. Therefore, it is accessible from both sides.

6. Usage of Cantilever Racking


Cantilever Pallet Rack usage is common in many industrial settings. For example, these include warehouses, factories, timber yards and steel yards. It is especially important that a suitable concrete slab is available to support the loaded structures and secure floor fixings to. The standard components described above are for indoor use only.


The finish on a Cantilever Shelving system varies depending not only on the intended use but also the environment. By comparison, enamel powder-coat paint is the most common finish; providing durability and resistance to corrosion for internal applications. On the other hand, Cantilever Pallet Racking used in outdoor applications must have a hot-dipped galvanised finish particularly to help prevent corrosion and rusting.

Forklift Use

The storage of heavy or bulky products will require a forklift for example. Another reason for this would be if the rack was above two metres. In addition, Forklift Slippers help lift very long or wide products.

Load & Safety Signage

It is particularly important to fix Load & Safety Signage to Canti Rack structures. To explain, this signage provides operators with an understanding of the maximum loads that can be placed on the structure.

Suitability of your floor

Firstly, you should install and secure Cantilever Shelving to a reinforced concrete slab that has sufficient strength and thickness. Secondly, Space Rescue takes no responsibility for the performance and suitability of the proposed floor, nor for assessing it. Similarly, Space Rescue is not responsible for the floor’s performance regarding structural performance under load or its ability to remain level and plumb as the load increases due to slab deflection. However, we are happy to provide information to help you determine the suitability of the proposed floor. However, we are happy to try and help you with the provision of information necessary for you to determine the suitability of the floor proposed.

7. Industrial Pipe Racking

Industrial Pipe Racking obviously stores various types of pipe. Typically the arms will include a spigot at the ends to help prevent product rolling off the arms.

8. FAQ

Do Cantilever Racks need to be anchored?

Yes, we highly recommend using appropriate floor anchors to secure our Cantilever Racks to an approved concrete slab of sufficient strength and thickness. Anchoring is important for front to back stability and to ensure the proper functioning of spine bracing for side to side or down aisle stability.

How do you install Cantilever Racking?

Our professional installers, dressed in Personal Protective Equipment (PPE) and using both Lifting and Height Access Equipment, will make use of Cantilever Shelving installation manuals to undertake this serious task. In summary, they will firstly attach columns to bases, then stand and anchor to the floor in braced modules, before attaching arms and safety load rating signage.

What are the Cantilever Racking Standards?

The applicable Cantilever Racking standard used for the design and manufacture of our Cantilever Racking is FEM Code 10.2.09 – ‘Design of Cantilever Racking’. This code outlines the principles for it’s design and accompanying applicable requirements for all types of Cantilever Rack Systems fabricated from steel members and intended for the static storage of unit loads.

Does Cantilever Racking need to be bolted down?

Yes, we highly recommend that our Cantilever Racking is appropriately bolted down using our recommended floor anchors. This helps to minimise the risk of toppling over if it was to encounter any accidental horizontal forces from a forklift during loading for example.

9. Availability of Cantilever Racking For Sale

In addition to the variety of sizes of Cantilever Pallet Racking for sale, Space Rescue distribute our Cantilever Pallet Racks to all corners of Australia, including other areas and towns, such as the Gold Coast, Sunshine Coast, Toowoomba, Newcastle, Canberra, Wollongong, Geelong, Ballarat, Bendigo, Albury, Wodonga and Bunbury from our capital city warehouses.

Furthermore, are Vertical Racking, Mezzanine Floors, Dunnage Rack, Second Hand Shelving, Pallet Racking or Pallet Rack Workbenches of interest?