Ersättningsmodeller för ballasttransporter : vid anläggning och underhåll av skogsbilvägar

Abstract: Construction and maintenance of forest truck roads are a necessary element of industrial forestry. Payment for contracting services in this context can be done according to a number of payment models. This study will focus on the methods and consequences associated with a change of Holmen Skog’s payment model from per hour to per metric ton for ballast hauling. The aim of this study is to improve the economic efficiency of Holmen Skog’s ballast hauling in construction and maintenance of forest truck roads. This is done by formulating and evaluating a proposal for a payment model based on crowns per ton. The aim is fulfilled by dividing it into three steps: Step 1 – To identify relevant factors for a payment model Step 2 – To formulate a payment model Step 3 – To evaluate the formulated model The identification of relevant factors was done by twelve interviews. The respondents were divided into four groups; generalist service buyers, generalist service providers, specialist service buyers and specialist service providers. The interviews also gave estimates of time consumption for different element of the hauling cycle which were later used to formulate the payment model. The evaluation of the model was based upon twelve projects, seven constructions and five maintenance projects. Six factors were identified from the interviews as important in a future ton payment model: - Time for loading and unloading - Driving speed - Availability of turn-around points - Frequency of traffic disturbances or obstacles - Distance from ballast source to delivery point - Vehicle load capacity The comparison of the actual time consumption and modeled time consumption with the initial payment model showed a general underestimation of the time consumption for construction projects and an overestimation of the time consumption for maintenance projects. No indication or reason for this difference was generated during the interviews or in the previous research. These differences should be better quantified for implementation of a per ton payment model.