The document provides an overview of the engineering sector hierarchy in British Columbia, including the roles and responsibilities of different professionals. It distinguishes between professional engineers, applied science technologists, certified technicians, and tradespeople. Professional engineers can work independently outside established codes and practices, while technologists assist engineers and work within existing standards. The document outlines the education, experience, and licensing requirements for each role and provides examples of how the hierarchy is structured within municipal engineering departments and public utility engineering divisions.