Abstract: The invention relates to a modular building of the type that comprises vertical frame columns (70) and a plurality of volume modules (2) prefabricated of sheet metal profiles (18-32) and being of rectangular horizontal section, which are supported by the columns (70) on two or more floor levels. The volume modules (2) are prefabricated with two frame edge beams (50) which are stronger than said sheet metal profiles (18-32) and which are horizontally extended along a respective upper end wall edge of the volume module (2) and which are on the one hand linearly connected with frame edge beams (50) of adjoining modules (2) on the same floor level and, on the other hand, connected to the columns (70) in such a manner that the horizontal position of the frame edge beams (50) relative to the columns (70) is fixed. The invention also relates to such a module and a method for manufacturing such a building.