They can carry their own weight
Use some standard of cardboard wt. per square ft, as a box has six sides, you have (length x width + length x height + width x height) x 2 x lb/ sq ft or if in metric kg/ sq m. Get net weight by subtracting cardboard wt from box wt. One standard cardboard box wt. in US is 0.13 kg/ sq m. This number will vary in US and, may be quite different in other countries.
The amount of weight a person can carry will depend upon the person. The stronger the person is, the more weight that they will be able to carry.
.044
2500
There is no "average weight" for a cardboard container, since different size containers will have different weight. Is this a candy box for 2 ounces of candy, or a box for a refrigerator? They are both cardboard containers.
When made out of cardboard? About ten kilos.
Approximately half their weight.
in the region of 150lbs
130 tons
7
1125