6.1 Introduction 6.2 Constructing Influence Lines using Equilibrium 6.3 Constructing Influence Lines using the Muller-Breslau Principle 6.4 Influence Lines for Trusses 6.5 Practical Uses of Influence Lines 6.6 Practice Problems Book traversal links for Chapter 6: Influence Lines 5.10a Selected Problem Answers Up 6.1 Introduction