This document discusses various types of engineering insurance policies that provide coverage for construction and operational projects. It outlines policies that cover risks during the construction phase such as Contractor's All Risk policies, and policies that cover risks during the operational phase such as Machinery Breakdown policies. Specific perils, exclusions, and benefits are described for different policy types including policies for construction projects, erection all risk, and contractor's plant and machinery. Defective design exclusions for Contractor's All Risk policies are also explained.