Marlborough District Council Roading Assets - Activity Management Plan 2015 - 2018 SECTION 1 EXECUTIVE SUMMARY 1.13 PERFORMANCE MONITORING 1.13.1 Introduction This section of the Activity Management Plan describes the systems to be utilised to monitor the performance of the road network against the standards set in this AMP. Performance monitoring is an important part of the Asset Management process to ensure that Council, as the owner, is getting the best value out of the assets at all times. The following chart represents the optimised replacement costs based upon the latest valuation of the road asset network and associated assets. 1.13.2 Sealed Pavement Performance Monitoring Sealed road pavements, including car parks, are the major component of the overall road asset. Their current Optimised Replacement Cost is valued at $379.7m representing 76% of the total roading asset replacement cost. Considering this value Council undertakes various programmes to ensure the performance of the sealed road network is optimised. 1.13.2.1 Pavement Condition Assessments Pavement defects are measured and quantified in condition surveys. The following defects are rated: Shoving Scabbing Alligator Cracking Longitudinal & Transverse Cracking Joint Cracks Potholes Pothole Patches Edge break Edge break Patches A number of these are used by the NZTA to produce a Condition Index (CI) comparing Marlborough to other New Zealand authorities, and with the Deighton’s Total Infrastructure Management System, dTIMs reports, a composite index Surface Integrity Index (SII), which incorporates similar parameters and includes seal age. To ensure the accuracy of data being input into the RAMM database all persons undertaking sealed road condition assessments are to be qualified and have attended a NZTA Approved Condition Rating Course within the last 24 months. This is to ensure a consistent level and quality of data is being input over time. The following references are followed for all RAMM condition assessments; NZTA “RAMM Road Condition Rating and Roughness” manual 1997 (PFM6) (with amendments). NZ Institute of Highway Technology “RAMM Condition Rating – Sealed Roads”, the Manual used at the Condition Rating Workshops throughout the country. All measuring equipment used to obtain data or set out road sections and inspection lengths shall be calibrated in accordance with the necessary calibration requirements. The location percentage error is to be ±0.1% or better (±1m per km). 30 September 2014 Page 174 of Section 1