Service Index
Objective: Gain an understanding of what the Service Index is, and how to configure it in Assetic Predictor
The service condition index function is typically utilized for reporting purposes where models have more than one service criteria identified and configured for each of the assets. The OCI (Overall Condition Index) provides an overall condition number and is typically the default reporting index which utilizes all of the Service Criteria multiplied by their Allocated Weightings to calculate and return a condition score for all assets on an individual basis.
However, when the models configured utilize service condition drivers for different elements or components of the asset, the OCI calculated based on these values can be skewed, as it utilizes all service condition criteria to calculate the final condition score. This may be acceptable for certain models, however this is not always the case. Consider the following example:
A buildings model has been configured that utilizes Roof cladding condition, Sub structure condition, Super structure condition and External wall surface finish condition. Whilst the external wall surface finish condition criteria is required to drive the model with regards to painting or rendering works, this service criteria will not play a major factor in the calculation of the building asset’s structural score.
If the condition score for the External Wall Surface Finish was 5, or poor condition, but all conditions were rated as 1 or 2, the Overall Condition Index could be equal to 3. This would mean that an aesthetic criteria was inflating the final Overall Condition Index.
However if we were to exclude External Wall Surface Finish condition the calculated condition is more reflective of the structural components of the building asset. In a case such as this, it would be recommended to use and configure the Service Index to more accurately report the condition of the various asset elements and components as applicable, thus improving the OCI.
Note that the Service Index can only be set up if Service Criteria were created in the Template, as they are a variable that controls the importance and weighting attributed to a set of Service Criteria.
To configure the Service Index:
- Click the Service Index tab within a Template
- Click the Add button in the Service Indices box:
Users can edit and remove service indices using the Edit, Remove buttons.
The following screen will appear after Add is clicked:
Using the arrow buttons, users can select the services that would come under each service index. In the following screen the User has created a service index called Condition and selected four services that describe the physical condition of the asset under that service index.
