This lecture explores the use of materials in construction, focusing on stone, wood, and concrete. It delves into the properties and characteristics of different types of stone, the economic flow in construction projects, seismic testing, wooden construction techniques, and the challenges and considerations in using wood as a building material. Additionally, it covers topics such as masonry, thermal properties of materials, flat roof construction, sound insulation, and the comparison of live and dead loads in wood and concrete decks.