Quantitative assessment of impact of layer moduli on surface deflections

This paper deals with the interpretation of falling weight deflectometer data, with emphasis being placed on presenting a methodology that can be used to determine the sensitivity of measured deflections to the location and stiffness of each layer in a pavement-subgrade system. The notion of contribution ratio, which is a measure of a layer's contribution to measured displacement, is presented. The methodology applies to both elastostatic and …