**5. The Application of BIM System at one of the building phases (Equation (A6))**

$$\text{BMI Index by phase (X5)} = \frac{\text{X1} + \text{X2} + \text{X3} + \text{X4}}{4} \tag{A6}$$

The higher the suitability, the more the result of the index is close to 1.00. This means that as the BIM management team is more centralized in the network, as network sharing becomes apparent, for the connectivity of all involved, professionals and end-users alike, at any phase of the building, the performance of the project may be relatively more social.
