The AS 4084-2012 is the Australian Standards document surrounding steel storage racking that outlines the specifications, procedures and guidelines. The objective of the document is to ensure steel storage racking sold within Australia is compliant with the specifications listed.

The release of the Australian Standard AS 4084-2012 in 2012 was to override the Standards set out in 1993 (AS 4084-1993). It applies to ‘adjustable, static pallet racking made of cold-formed or hot rolled steel structural members’. To clarify, the racking covered under the Standard includes:

Selective Pallet Racking,
Double Deep Selective Pallet Racking, as well as,
Narrow Aisle Selective Pallet Racking

Maybe you didn't realise that when you change the height of your beam levels that it has an impact on the load capacity of the structure. There are risks, expenses and dangers assocciated with making alterations to your beam levels that you probably hadn't considered. The supplier contract you sign from your racking supplier, would have included fine print that the structure of the racking system cannot be altered without consulting the supplier first.

In addition to contravening the Australian Standards the AS4084-2012, you also contravene the supplier contract when adjusting beams levels without their approval. Every racking supplier in Australia is obligated to the Standards which makes clear in section 8.1.3 that alterations to the racking require the racking suppliers approval.

Also it states clearly in the Standard under section 8.1.3 is that there is to be no alteration of the configuration of the racking structure, without prior approval from the racking provider. As adjusting the system have a serious impact on the load capacity and the safe working load signs could become invalid.

1.3.11 - Where required, the end frame on each row should extend past the top load beam by at least 50% of the unit load (pallet) height.
1.6a - Load Signs are to be permanent and corrosion resistant as well as being located where it is clearly visible. Most importantly, the safe working limit sign should include:
the safe working unit load limit,
the total working unit load limit for each pallet beam level,
the total working unit load limit for each bay, and
the maximum distance from the base plate level to the first beam level and maximum distance between subsequent beam levels.
1.6b - The supplier is to provide all documents on the drawings and specifications of the racking structure installed. At the completion of the installation clients are given a commission document by the project manager.
1.7.2 - The clearance from the top of a pallet to the underside of the load beam above is a minimum of 75mm for beams under 6.0m and 100mm for load beams above 6.0m. (Refer to below illustrations for explanation.)

Figure 1.7.2 - The flue space in between back to back rows is a minimum of 100mm.
2.4.1.a - The position of Upright Protectors of at least 400mm high are to be on the frame at the end of a row of racking at an aisle cross section.
2.7.5 - For each base plate of the racking structure it is to have 2 floors anchors.
8.1.1 - The supplier has to provide the client with all user manuals and necessary training. This is regarding the correct usage and maintenance of the racking.