State of Stress in Infrastructure

This lecture covers the chapter on the state of stress in infrastructure, focusing on traffic loads, the importance of the subgrade for design, and methods for estimating stresses, deformations, and displacements in pavements. It also discusses the various types of pavement distress, such as temperature variations, climatic effects, and aging, and presents a study on pavement degradation. The lecture delves into the concept of equivalent thickness for multi-layer systems, the transformation of multi-layer systems into single equivalent layers, and the calculation of stresses and strains in pavement layers. It concludes with a discussion on the equivalent thickness method and the correction factors used in pavement design.