In Bangladesh, we use to build houses by using cement, iron, wood, glass etc. Steel is quite expensive over here. But time is changing now. New builders are now interested in steel too. May be in future Steel buildings will be introduced over here too. This country is growing at introducing new technologies also. Now we (our country) are producing steels. There are some big companies who are producing steel, building materials. You know competition makes better product. So future of steel building looks great. Please check this YouTube video. You will like to see this future steel building.