This lecture delves into Burmester's solutions for multilayer systems in road pavements, discussing analytical solutions for two and multiple layers, focusing on homogeneity, isotropy, linear and elastic behavior, and continuity equations at interfaces. The lecture also covers the use of Burmester's BAK for calculating stresses and deformations, as well as the application of software for analyzing stresses and strains in multilayer systems. The instructor emphasizes the importance of using finite element programs for better modeling of road materials, considering temperature effects, viscoelastic behavior, and load distribution. The lecture concludes by highlighting the complexity of using such programs and their application in research rather than daily design practices.