PERFORMANCE AND ECONOMIC RATING SYSTEM (PERS)

The Dynatest Performance and Economic Rating System (PERS) is a Pavement Management System, which provides a database for all the pavement data, collected over time, and a set of advanced engineering tools to model the future development of the pavement condition.

 

The program can automatically determine the most efficient maintenance and rehabilitation strategies for a large number of road sections, from which the optimal combination may then be calculated for given budget levels over a number of years. PERS may be used as a project level tool for calculating the effects of different maintenance and rehabilitation strategies on a particular selection of roads. Different levels of reliability may be used on individual sections. PERS makes use of the incremental recursive approach for calculating pavement performance. This advanced modeling system combining structural, functional and visual data can predict pavement failure, allowing for rehabilitation at an optimum point in time, preserving the investment of the pavement network.

 

Key Benefits

  • Various budgets can be assessed to determine an optimum cost/benefit ratio

  • Determine the effects of vehicle overloading

  • Determine the budget to achieve a network condition, such as e.g. improving residual life or overall IRI value

  • Determine the optimum time to rehabilitate a pavement

  • Any material type, asphaltic, composite or concrete can be modeled by the system

  • Unlimited number of sections

  • Unlimited number of rehabilitation options

  • New material can be easily added

  • New vehicles and different loading can be added and assessed

  • Optimization can be performed for a user defined time frame up to 25-30 years, considering multiple rehabilitation options

  • PERS uses moduli, stresses and strains in the deterioration modeling

  • Deterioration models combine structural and functional modeling

  • Models can be improved as more data is entered into the system

  • Structural numbers and Structural indices are not used, as it is not possible to correctly model the pavement with this limited information