The purpose of the building was established
Residential buildings made by people for the benefit of residence in the broadest sense. For the present time it is not just a shelter or shelter but as a place of family formation.
Offices are made for community service, while bridges and dams are made for the purpose of infrastructure for people’s prosperity.
All of the above are referred to as buildings because they cannot be easily removed considering the weight except when dismantled. Cabinets made by people also have other purposes between storing goods, benches for seating, but these objects are easily moved to other places, for that the objects here cannot be said to be buildings.
In the making of buildings it is not enough for just one worker, but sometimes it requires hundreds to thousands of workers depending on the size of the building being made.
Hopefully the information above about the purpose of the building can be useful for you.