This document discusses the key topics in civil engineering. It outlines 7 main branches of civil engineering including structural engineering, geotechnical engineering, transportation engineering, and construction management. It describes the important role of civil engineers in developing infrastructure like buildings, roads, water systems, and more. The document also covers important terms used in civil engineering like plinth area, carpet area, and floor space index. It discusses factors to consider when selecting sites for buildings and provides an overview of different types of structures and foundations.