One fact which excessively bothered Ernst Walter, a static load specialist and friend of Mies, was that calculations for early steels were dictated by the configuration, and obeying that rule was important. But in this case they were catering more to the aesthetic aspects than the structural. This is reflected, for example, in the exterior walls appearing to be liberated from any static force in order to permit large openings. With that, there is a contradiction between the aesthetic character of the facades and their structural condition.