Abstract: Building construction formed of structural module elements formed as a rectangular plate and having on the plate a coupling (2) for interconnecting them. The module element has a U-like cross section with two legs (3, 4) and a rib (5) between them, one leg (3) is longer and narrower than the other leg (4) and is connected to the plate surface, and the distance between the legs (3, 4) at the rib (5) is no greater than the least width of the other leg (4). The module elements are parallelly connected to each other by interconnecting the coupling (2) of one module element with the coupling (2) of the adjacent one, whereupon the upwardly or downwardly extending thicker legs (4) of one element are disposed between the downwardly or upwardly extending legs (3, 4) of the other elements.