It is based on the Lagrange equation solution for thin sheets.
The general principle of the method is to measure the adequacy of road pavement in terms of number of vehicles (standard axes from 82 kN) that a road pavement can withstand, maintaining the desired functionality, for a certain number of years (set as a project data and equal, in most cases, to the useful life of the road). The method is based on considerations resulting from experimental tests. Among the rational methods, the highest deflection is implemented (Ivanov) and Westergaard’s, designed to calculate deflections on multi-layer pavements.ĪASHTO GUIDE FOR DESIGN OF PAVEMENT STRUCTURES With RPD you can perform the verification procedures by empirical methods (as proposed by AASHTO in the document GUIDE FOR DESIGN OF PAVEMENT STRUCTURES) or by rational methods. RPD is a software that implements automatic procedures for pavements verification calculations. RPD (Road Pavement Design) – Software for the verification of road flexible and semi-rigid pavements.
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