This paper presents a methodology that allows risk assessment to be utilised in the whole-of-life costing analysis of pavement alternatives. It supplements and enhances previous independent work carried out for the Australian Asphalt Pavement Association (AAPA) to assist in the optimisation of pavement design and selection. The impact of risk on whole of life costing is addressed through a procedure proposed to assist in maximising the reliability of the final selection. It is the issue of risk that provides a revised view and procedures proposed for comparison of alternatives. In the proposed method, a number of feasible alternative pavement designs are determined in the usual manner for comparison using the whole-of-life cost approach. A risk assessment of each alternative is then carried out to take into account not only the initial cost of construction of each alternative, but also all the maintenance and rehabilitation costs that may occur during the life of the pavement, and an estimate of the salvage value of the pavement at the end of its design life, if this is considered applicable. (Author/publisher) For the covering entry of this conference, please see ITRD abstract no. E208431.
Samenvatting