Corrugated box strength calculation method

The corrugated box strength standard, GB6543-86 national standard appendix G stipulates: Corrugated box compressive strength value P should not be smaller than the value calculated by the following formula: P=K·G(H-h/h·s)(kgf/ Cm2)
Where: K-intensity insurance factor;
G - Weight of cargo loaded in corrugated boxes, kgf;
H-stack height, cm;
H-box height, cm;
S-box bottom area cm2.
This formula can be simplified in practice as: P=K·G(n-1)
Where: n-stacking number;
K- depends on the length of storage:
<30 days 1.6, 30-100 days 1.65, more than 100 days 2.
However, some textbooks set it as 3, so that the safety factor is greater.
If the weight of a certain type of instant noodle box is 3.5kgf and the stacking number is 16 layers, then the strength of the corrugated box (pressure resistance, the same below) should be:
P=2×3.5 (16-1)
=7kgf×15
=105kgf
Some large boxes, as well as their own strength standards, such as the Nanfeng Chemical Group specifies that its detergent powder box strength standard is 350kgf. To make a box for it, the strength must meet this standard.