it really depends on the strength of the enclosure. if you are wondering about the screens themselves, not very much, an adult standing on one will tear it.
it can't hold very much weight
how much does a 55 in h flat tv weight
20 times its weight in liquid
112lbs
it can hold as much weight as it can handle
There is effectively no limit to the amount of weight that aluminum can hold, if you use enough aluminum.
A triangle is a shape. How much weight a triangularly shaped object could hold would depend on the nature of the object.
it can hold up to 2 gallons
Paper can hold exactly 4.5 kg
90lbs
About 50,000 lb.
1.683 grams