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Load-bearing box/crate packaging is made up of three elements:
- the floor (1)
- the side and end walls (2)
- the lid (3)
Figure 48: Elements of a load-bearing box/crate,
exemplified here by a box with a cut-lumber cladding
6.2.1 Design features of a cut-lumber/sheet material box
Figure 49: Example: Construction of a box with vertical cut-lumber cladding Key (Figure 49):
| 1 |
Transverse skids |
6 |
Diagonal members |
| 2 |
Longitudinal skids |
7 |
Lid-support members |
| 3 |
Floor boards (may be spaced in the case of a crate) |
8 |
Edge boards |
| 4 |
End beams |
9 |
Lid (boards may be spaced in the case of a crate) |
| 5 |
Cut-lumber cladding (may be spaced in the case of a crate) |
10* |
In the case of large, wide boxes:
The lid-support members are additionally supported by vertical members |
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|
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Between the edge boards and lid in the case of boxes:
An additional barrier layer of twin-wall sheet or film and hardboard |
Figure 50: Example: Construction of a box
with sheet material cladding, OSB or plywood Key (Figure 50):
| 1 |
Transverse skids |
6 |
Edge boards |
| 2 |
Longitudinal skids |
7 |
Lid-support members |
| 3 |
Floor boards |
8 |
Edge boards |
| 4 |
End beams |
9 |
Barrier layer |
| 5 |
Plywood/OSB cladding |
10 |
Plywood/OSB |
| |
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11* |
In the case of large, wide boxes:
The lid-support members are additionally supported by vertical members |
With this type of construction, no diagonal members are required in the walls, as the sheet materials have a sufficiently high shearing modulus.
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