At the first stage, a list of required loads is formed. Self-weight loads are generated automatically and do not need to be calculated. To make it easier to define the distributed load on the beams (for example, payload or grating load), an imported unit load is used. This loading is copied with the required ratio. To set the wind load, it is required to calculate the pressure on the building in different zones and elevations according to the US Code ACI.
After calculating the pressures, it is necessary to go to the distributed load per linear meter of columns. To calculate the load, the load area, the zone and the column height are taken into account.
The analysis takes place in several stages. As a result, the engineer can decide to make changes to the structure: add or remove links, change the geometry of the supporting structures, make changes to the foundations, expand the sections of elements.
If necessary, the engineer can change the materials of the structures. At this stage, the engineer can analyze the vibration modes of structures and make preliminary changes to the design model so that the sum of the effective modal masses taken into account in the calculation is at least 90% of the total mass of the system.