One way to to find out which kind of material was used in the framing of a building is to contact a building inspector. Building inspectors evaluate the structural integrity of a building. A structural engineer can also help one to figure out whether or not steel framing was used in construction.
Steel, especially for large building projects, would typically be referenced against a commodities futures market. However, when buying from a supplier one can reference the Global Composite Carbon Steel Price Index or Global Composite Stainless Steel 304 Price Index.
All tall buildings are built on steel frames. Steel is the only material strong and light enough to support the weight of the building. The frame serves the same purpose in a building that your skeleton serves in your body. Imagine what would happen to your body if you had no skeleton; you could not stand erect.
Build the floor first. They are build from the inside out, so make sure there is a frame under the floor to attach the wall panels. Use a steel frame for your walls. This will make it more sturdy. Also a good idea to help it stay sturdy would be to use steel joints.
Yes, but would be heavy and not as strong as steel.
The best would be to replace the whole frame with an aluminium frame, may be expensive but the frame will most probably outlive the building!!!!
Steel
One of the pros of concrete versus steel in a building framework would be that it is cheaper to use concrete. One of the cons would be that it is not as safe to use concrete.
Steel corrodes, especially in moist environments. If there were a steel window frame near the ocean, it would be likely that it would corrode and collapse because of the environment it is in.
Now, see, if you built a building at the epicenter of an earthquake, no matter what what ground is there, the building will inevitably collapse. Near an earthquake's epicenter, though, is a different story. The best ground would definitely be solid, packed soil. The best foundation for a building would be isolated, unless you had a smaller building like a house, which would be better off with an anchored foundation. The best type of building would have steel frame crossties-only on a skyscraper or tall, large office building like in New York, though.
The biggest weakness for steel as a building material for ships would be rust from the water constantly touching the steel cold water temperatures can also make the steel brittle and weak so that is also counted as a major weakness as well.
The main materials used to construct a bank building would be to create a solid foundation. A large portion of the building would be made out of concrete but would also have steel panelling to hold the building together.
There are no specific prices for steel buildings as your final cost will depend on what you decide to build. If you would like to look more into steel buildings you can check out MortonBuildings, USSteelBuildings, and GenSteel. Those sites may be able to help you price out your new steel building.