Nowadays, people find very often a new application of long -familiar things. I must say that sometimes it even comes to the point of absurdity, and sometimes it turns out that there is a very useful and new discovery.
This happened with metal. All a long-familiar material was usually used in construction only to create certain decorations of large sizes, such as a column or something like.
But over time, the use of metal frames led to the fact that people began to use them in order to quickly and cheaply build small buildings.
In the main plan, metal frames were used exclusively for commercial purposes. People who were engaged in entrepreneurship and needed their own premises, found in this a convenient way out. Metal structures for the construction of buildings are collected many times faster than if you create a room from zero.
If, in order to build a stone or wood, a huge amount of different building material is needed, different workers are needed that will engage in construction, then in order to put the frame and sheathe it with facing panels, so many costs and nerves are not required. And in time it will take not several months, as in the case of brick or concrete, but just a couple of weeks.
Many people are interested in the fact that if it is so cheap and fast, residential buildings from a metal frame are not built, because this would significantly reduce the price of real estate and would allow more people to buy it.
In principle, the answer is very easy. The construction of metal structures of residential buildings is impossible due to their fragility. When a shopping center is placed on such a frame, it is calculated that it will have large spans, respectively, the pressure on it will not be very large.
Residential buildings, firstly, are built in height, respectively, it is necessary to take into account the strength of the wind, and secondly it turns out that there are too many cargo on the lower floors. So you can also allow the construction of the hangar from metal structures, but it is basically dangerous to put a residential building, and you will have to do so many calculations and acquire strengthening and filling material that it is simply unprofitable.
So if you are interested in a commercial construction, then a similar option for erecting a room is very convenient. But if you need a place for housing, then the house built of metal structures is unlikely to like.