The document discusses different structural elements like beams, columns, slabs, footings and roofs and the various materials used to make them like brick, stone, RCC, steel, wood etc. It provides examples of structures that use materials like brick beams in The Friary building, wood beams in a faux wood beam house, stone columns in the Parthenon temple, steel columns in a glass cafe in Shanghai, RCC slabs in Salk Institute etc. It summarizes the location and use of different materials in structural elements across various case studies.