| setting_key | setting_value | comment |
|---|---|---|
| rehab_excess_rut_thresh | 17.2 | Rut threshold above which boost (for Rehabs) is applied (see below) |
| rehab_excess_rut_fact | 4.8 | Multiply excessive rut with this value to get the boost for Rehab TSS based on excessive rut (if any) |
| rehab_pdi_rank | 95.2 | PDI rank below which TSS score for Rehab becomes zero |
| holding_pdi_rank_pt1 | 86.3 | PDI rank below which score for holding action becomes zero |
| holding_pdi_rank_pt2 | 96.3 | PDI rank at which score for holding action is maximal (100) |
| holding_pdi_rank_pt3 | 27.9 | TSS for holding action based on PDI when PDI rank is 100 |
| holding_max_rut | 12.0 | Do not consider holding action if rut is above this value (unless it is not a rehab route in which case it is ignored) |
| preserve_sdi_rank | 0.0 | SDI Rank below which score for Preservation becomes zero (we want to apply preservation where there is some surface distress) |
| preserve_max_pdi_chipseal | 20.0 | Do not consider Chipseal Preservation treatment if PDI is above this value |
| preserve_max_pdi_ac | 5.0 | Do not consider AC Preservation treatment if PDI is above this value (if above, AC holding will be triggered) - Keep this LOW because Preserve AC includes no repairs!! |
| holding_max_pdi_ac | 30.0 | Do not consider AC Holding treatment if PDI is above this value |
| preserve_max_rut | 11.5 | Do not consider preservation if RUT is above this value |
| preserve_min_sla | 68.9 | Do not consider preservation if Surface Life Achieved % is below this value |
Treatment Suitability Scores
Overview
Parameters held in under the treatment_suitability_scores lookup set key comprise constants that are used in the assignment of Treatment Suitability Scores. These parameters are only used in the Multi-Criteria Decision Analysis (MCDA) model.
If you are running an MCDA model, the parameters discussed on this page are of vital importance. To understand the role that these lookup parameters play in triggering treatments, we strongly recommend that you carefully study this page dealing specifically with the rules for triggering treatments in an MCDA model.
Lookup Set Key
The key to identify this set in the model code is ‘treatment_suitability_scores’ (case-sensitive)
Change Level
Parameters held under the treatment_suitability_scores lookup set should be reviewed for each project type.
These parameters can be optimised for a specific network by using them as variables in a Goal Seek model.
Lookup Parameters
Parameters contained in this lookup set are detailed below. Note that parameter keys are case-sensitive.