MCDA Treatment Triggering

Overview

Parameters held in under the mcda_treatment_triggering 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.

Lookup Set Key

The key to identify this set in the model code is ‘mcda_treatment_triggering’ (case-sensitive)

Change Level

Parameters held under the mcda_treatment_triggering 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.

setting_key setting_value comment
ac_hmaint_maximum_sla 90.0 Maximum Surface Life Achieved (%) at which to consider a AC Heavy Maintenance (for SLA over this value, consider only Rehab and Preserve AC with Repairs)
ac_hmaint_min_periods_between 5.0 Minimum number of periods between AC Heavy Maintenance and any previous treatment (excluding Routine Maintenance)
Important

The parameters shown above are examples only. You should regard these as defaults that you need to review for each network you are modelling based on historic patterns and the network needs and model objectives as agreed with your client.