Many many things about prefabricated metal buildings
Metal buildings are built to resist strong winds, snow and rain and such extreme weather conditions as hurricanes and tornadoes, even earthquakes. They are also easy to heat in the winter and cool in the summer; the prospect of keeping utility costs down attracts churches and schools to metal buildings as a cost effective way to house a congregation or a building full of students. Metal buildings are also remarkably easy to construct, given the size of some the metal buildings kits. You basically lay the foundation and raise the support beams, rafters and metal sheeting for roof and walls. You frame windows and doors at the same time as you construct the walls and finish them off in the latter part of the assembly process.