It depends on the type of beam, the material, whether it is a bridge span or cantilever, the allowable deflection and safety margin needed. We need a lot more data on the application.
2 tonnes
Steel pipe varies in weight according to size and thickness (schedule).
Brick does not support weight. I beams are normally supported by square tubing columns or pipes.
You need to specify the wall thickness in order to calculate the weight.
If you're referring to 14 gauge steel wire, about 60-65 pounds safely, but remember, supported weight depends not only on the wire, but the screws and nails that are attached to the object and the wall or ceiling. (Not to mention the material of the wall or ceiling. Drywall will hold much less than hardwood, so use a stud finder if possible to drill/nail into the wall or ceiling for added support) When in doubt, always use stronger, thicker materials than you think you'll need.
2 tonnes
It depends on the bridge.
not much
7840 kilograms
120biitchassniqqa
well a steel sword can very in weight. But i bet it is very heavy.
it can hold as much weight as it can handle
14lbs. try it.
A two by four can support a load up to 400 pounds. The length of a two by four will change the weight it can support.
14 lbs.
The cylinder will support, at neutral buoyancy, as much weight as the weight of water it could contain, less the weight of the cylinder itself.
The amount of weight a curtain rod can support depends on how many support brackets are helping support it. The more supports, the more weight. If there are no supports a typical rod can hold 20-30 lbs.