The frame arrives with pre-drilled holes, and the anchor bolts are already waiting in the concrete. These two scopes must meet in a precisely defined geometry. That is why the starting point of a steel hall requires good data exchange between designers and contractors. Later forcing the base plates to fit is not a way to resolve discrepancies. The check should take place earlier, before the first columns are positioned over the foundations. Foundations are designed taking into account the ground, water and the loads of the steel hall. The steel structure transfers vertical, horizontal and other actions resulting from the adopted layout. Knowing the hall area alone is not enough. Two similar buildings may require different solutions due to location, equipment or geotechnical conditions.