ESA-Prima Win Expert System Connect Frame

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The expert system is used for all types of steel frame connections which are implemented in ESA-Prima Win: bolted, welded and pinned connections.
When a node is selected, the expert system searches the template library for matching connections.A list of matching connections and their unity check (actual internal force divided by allowable internal force) is given. The program considers several criteria to select matching connections: joint
type, geometry, cross sections, steel qualities, ... The list displays the name of the connection, the unity check, the bolt grade, the source from which the connection comes, ... The selected connection is drawn on the screen.
For welded and bolted beam-column and beam-beam connections, the unity check is based on the
moment capacity. For bolted base plate connections, the unity check is based on the moment
capacity and the normal force capacity. For pinned connections, the unity check is based on the
shear force capacity.
For each connection in the template library a priority (1 to 5) can be defined. This priority represents the user preferences: some companies will prefer connections with always the same bolt diameter,other companies will prefer a minimum number of bolts, ...