Bridges are able to hold so much weight because of the way they are built and the tension that holds them together
the Brooklyn bridge
You want to find out how much weight your posicle bridge can hold before collpsing. So finding the weight of the bags of weights is very important to test your bridge. Then you will find out how much weight your posicle bridge can hold. ~be happy, life is good:)~
The maximum weight for a beam bridge can hold in 650 grams. A beam bridge Works on the standards of tension and compression, so a strong beam is needed to oppose twisting and bending under the weight it ought to support
The engineers that were responsible for building the bridge, created the 3D bridge on a 2D model. Plus the weight that the bridge could hold, was not calculated right for the people. Oops!
when you sit are of your muscle pressure goes to your legs, to make them stronger to hold you up. So depending on your weight And muscle value you could hold up to 2x your weight.
it's in the molecular structure
Everything else being equal, a shorter bridge is stronger: it will weigh less, and therefore will not have to support so much of its own weight.
well i think it changes because to much weight probably the bridge could move or to much weight it could fall out these are my thoughts. +++ Any bridge is designed individually, to suit its type and expected maximum carrying load and its local conditions including for example, wind loads. It is also designed with a "Factor of Safety" - a multiplier of the maximum load; so a bridge designed to take 100 tonnes working load with a factor of safety of 3, will take 3 x 100 = 300 tonnes without failing - but be on its utmost safe limit at that excess.
To figer that out, well it is hard. you would have be a geart geomiter or bulider. some steel bridges are pritty old so yeh.
the i-35W bridge collapsed because there was to much structural stress on the bridge at the time, when the bridge collapsed it was rush hour time so there was to much weight on the bridge. ^^^NO! the bridge collapsed because the design was flawed. the gusset plate that failed was too thin for the loading. this was the engineers error, hence the lawsuit.
GVWR(gross vehicle weight rating) is 3836lbs and the curb weight is 2,800lbs, so the max weight of passengers and cargo is 1036lbs.
Up to 20,000, IF the tires and axle are rated for it, and so long as the truck is within legal weight limits and bridge law formula.
It really just depends on the size of the folding drafting table. Generally these tables are quite heavy themselves, so they probably can hold a good amount of weight.