Refer to the exhibits.

Exhibit 3 represents the correct multi-building coordination condition. It shows the three building models occupying their intended and separate locations while referencing a common site-coordinate framework. Each building retains the model reference required for its individual internal setup, but all models are related to one consolidated site reference, thereby preserving their geographic placement and orientation when linked into the site model.

Exhibit 1 displays multiple displaced site-reference indicators, suggesting that the building models have not been reconciled to one authoritative shared-coordinate system. This condition creates a risk that models will appear correctly only when manually positioned and will subsequently shift when reloaded or exchanged. Exhibit 2 does not demonstrate the required relationship between the individual building origins and the shared site reference. Exhibit 4 places the building geometries on top of one another, which is characteristic of models linked using a common internal origin without applying their correct site positions.

For a campus or multi-building project, the site model should function as the authoritative spatial reference. Each building model is positioned against that site definition, and the coordinated relationship is retained through shared positioning rather than repeated manual movement. This allows consistent federation, consultant exchange, reload behavior, and downstream coordination.

Reference topics: Shared coordinates; multi-building projects; site-model authority; linked-model positioning; survey and internal reference management; model federation.

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