FAQ Stacking

This FAQ stacking contains frequently asked questions about stacking the VARIBOX. This FAQ explains important stacking rules on IBCs from the ADR regulation. Additionally, it provides guidance on how to stack and gives recommendations for any VARIBOX.

Stacking the VARIBOX IBCs

How can I see if I am allowed stack a VARIBOX?
Every VARIBOX is UN and ADR approved for the transport of chemicals and detergents. This approval includes the stack-ability, marked with a stacking symbol. According to chapter 6.5.2.2.2 of the ADR regulation, the maximum permitted stacking load applicable when the IBC is in use, is displayed in a symbol. In other words: this symbol indicates the weight that can be put on top of the VARIBOX.

Where can I find the UN stacking symbol?
The stacking symbol is near the UN mark of the VARIBOX. The picture shows what the VARIBOX stacking symbol looks like. In this example the number in the symbol is 2080 kg – this is the maximum load that can be stacked on the VARIBOX. For every VARIBOX this stacking load may be different, check its marking to verify the correct stacking load.

On a UN marking on composite IBCs, what is important to look at in terms of stacking?
The UN marking consists of a range of numbers. The next to last number indicates “the stacking test load in kg”. This number will be higher than the stacking load indicated: during the UN test “the load to be placed on the IBC shall be 1.8 times the combined maximum permissible gross mass of similar IBCs that may be stacked on top of the IBC during carriage” (According to ADR 6.5.6.6.4). The multiplication by 1.8 is a safety factor: don’t put this load on a VARIBOX, although it has been tested with it. Limit the stacking load to the mass indicated in the stacking symbol.

On a UN marking, what does the last number mean?
The last number indicates “the maximum permissible gross mass in kg” (ADR 6.5.2.1.1 (h)). This is not to be read as the stacking load. The stacking load is the number indicated in the stacking symbol.

How can I know, only by reading the UN marking, if the IBC is stackable?
While only looking at the numbers in the UN marking, if you see that the next to last digit is not 0, then the IBC is stackable.

How many VARIBOX can I stack when dynamic?
The stacking load relevant for the dynamic load or storage is indicated in the UN marking as “stacking test load in kg”. When dynamic, stack no more than 2 VARIBOX i.e. 1 on 1. Make sure the maximum permitted stacking load applicable, as indicated on the UN stacking symbol is not reached.

Can another brand or type of IBC be stacked above a VARIBOX?
We would strongly advise to stack VARIBOX on VARIBOX as correct nesting will be fully effective in this case. Nonetheless, the permissible gross mass should be respected, no matter what IBC is stacked on the VARIBOX.

Can I stack a VARIBOX SC with a VARIBOX FC and vice versa?
Yes, you can stack a VARIBOX SC on a VARIBOX FC and vice versa. The pallet or cover have the same nesting, guarantying effectiveness of the nesting and safe stacking.

The dimensions of the IBCs when stacked

What are the dimensions of a VARIBOX, when stacked?

Item

Volume

Length

Width

Height

Nett height (stacking)

Stacking height

VARIBOX SC

1000 L

1200 mm

1000 mm

1325 mm

1310 mm

2635 mm

VARIBOX SC

800 L

1200 mm

1000 mm

1135 mm

1120 mm

2245 mm

VARIBOX FC

1000 L

1200 mm

1000 mm

1325 mm

1310 mm

2635 mm

VARIBOX FC

800 L

1200 mm

1000 mm

1160 mm

1145 mm

2305 mm

VARIBOX CC 

250 L

800 mm

600 mm

1200 mm

1310 mm

2635 mm

Is my VARIBOX stackable during transport by sea and how many can I place in a shipping container?  
Yes, the VARIBOX is stackable during transport, please be careful about the maximum weight permitted by the transport container. Please note that the door height may be less than two VARIBOX stacked. This means that the VARIBOX is stackable inside of a High cube container but possibly not on entering. Please see the below table for the maximum number of VARIBOX you can place in different types of shipping containers:

Shipping container

Internal dimensions

Door opening

Max 1000 L VARIBOX per shipping container

Max 800 L VARIBOX per shipping container

(L x W x H) in mm

(W x H) in mm

20 ft

5090x 2350 x 2390

2290 x 2280

10 IBCs

20 IBCs

40 ft

12032 x 2350 x 2390

2290 x 2280

20 IBCs

40 IBCs

40 ft HC

12032 x 2350 x 2695

2340X2580

20 IBCs

40 IBCs

40 ft HC PW

12100 x 2422 x 2695

2340X2580

24 IBCs

48 IBCs

45 ft HC

13580 x 2350 x 2700

2340X2580

22 IBCs

44 IBCs

More information about the FAQ stacking

Do you any other questions about the FAQ stacking? or about, the VARIBOX FC or VARIBOX SC? Please feel free to contact us by info@varibox-ibc.com or call us at (+31) 0570-66-07-11