SCHEDULING OF WORKS

SCHEDULING OF WORKS

Objective

Work programming makes it possible to determine maintenance needs for infrastructure network managers over a given period of time—namely the type of works required (light maintenance, medium maintenance, major maintenance) and their distribution across the entire surveyed network to keep it in a satisfactory condition for its use (freight transport, passenger transport).

This service therefore provides an overall estimate of the budget required by asset managers to maintain their network.

How?

To carry out this service, we rely on an audit of the infrastructure network.

This involves collecting data on the network (mainly a survey of deterioration). This data makes it possible to assess the overall condition of the network and rate it according to the manager’s classification (for example: very good, good, poor, very poor).

Based on this rating, maintenance needs are defined (e.g. light, medium, major) and tailored to each manager.

PRIORITIZATION OF WORKS

Objective

Once work planning is complete, it may be necessary to establish a priority order for the works over a given timeframe (typically between 5 and 10 years). This is referred to as work prioritization.

How?

To prioritize works, we base our decisions on the work schedule and determine the order and type of interventions over several years. To achieve this, we establish a priority scale (defined in collaboration with the infrastructure network manager), which generally depends on pavement condition, traffic levels (including the presence of heavy vehicles), and the network’s maintenance strategy.

We present all the advantages and disadvantages of each approach so that the project owner can make an informed decision. The two most common strategies are:

      • Curative strategy: prioritizing the treatment of the most deteriorated roads, with the risk that less degraded roads may continue to deteriorate.
      • Preventive strategy: prioritizing the treatment of moderately deteriorated pavements, while postponing interventions on the most degraded ones.

Effective communication between the manager and our team is essential to ensure that prioritization aligns with the needs of their network.

REINFORCEMENT STUDIES

Objective

At the scale of a road section, in addition to a survey of surface deterioration, further in situ investigations (core sampling, curvature measurements, deflection testing, ground-penetrating radar, etc.) and laboratory tests (material testing to determine mechanical properties) enable us to gather comprehensive data to assess the condition and behavior of the pavement.

A strengthening study is a detailed diagnostic that makes it possible to identify the root causes of pavement distress.

PAVEMENT DESIGN

Objective

At the scale of a road section, following a strengthening study that provides an optimized diagnosis and identifies the causes of pavement distress, we determine, verify, and optimize construction solutions through a calculation and modeling phase: pavement design.

To do so, we rely on the recommendations of the NF P 98-086 standard (Structural Design of Pavements), as well as on the strengthening guidelines provided by Cerema and IDRRIM.

RECOMMENDATIONS FOR ADDITIONAL TESTS OR DATA ANALYSES

Objective

As part of a diagnostic service—whether for a strengthening study or for work recommendations—we may recommend additional testing and/or data analyses in order to reduce assumptions and refine our conclusions.

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