Building systems (bearing walls, skeleton, shell construction and other new structural systems) and to train the student to draw the constructional details through the study of: Bearing wall buildings (bricks and stones), Architectural symbols, building methods, Bonds, Tools, Wall thickness, Openings. Lintels and arches, Vaults and domes, Heat and sound insulation, Retaining walls, Erection requirements, Concrete components, Structural elements, Stairs, Internal sanitary and electrical installations.