Statistical investigations of the high-position accuracy of the automobile road coverings

The aim of this article is the review and analyze of performing leveling works in the construction of highways and the search for the implementation of statistical analysis of empirical data. The regulatory documents for the construction and commissioning of highways have been analyzed. The methodical basis is considered for statistical studies and studies of the accuracy of the altitude position of the surface layer of asphalt covering of the kilometer section of the highway in the village of Kokshenevo, Muromtsevsky municipal district of the Omsk Region. The leveling of the road section was carried out with the using of an electronic total station by a leveling step of 20 m. Absolute heights are obtained as a result of leveling. Absolute heights were calculated as amplitude difference of heights, which were used for verification of the results of statistical analysis of the normal distribution of the empirical values. According to the results of statistical analysis was performed the point and interval accuracy estimation (P = 0.95). Graphs of practical and theoretical distributions of amplitude height differences of asphalt pavement on the highway are constructed along its axis, left and right edges. The Pearson and Yastremsky criteria confirming the hypothesis about the normal distribution of amplitude height differences are calculated. The amplitude height differences of the asphalt pavement satisfy the requirements of the document SNiP 3.06.03-85, which regulates the construction of roads. The height does not exceed 24 mm, which corresponds to roads I, II and III categories with the using of sets of road vehicles without an automatic height assignment system. The obtained results show that during the construction of the road the technological process of works was adjusted to ensure its specified position in high-altitude relation.