What are the eight cad majors?

Plan, ceiling, floor paving, piping layout, electrical diagram, socket configuration diagram, weak current diagram and flue diagram.

1, plan is a concise graphic form of building layout scheme, which is used to indicate the relative plane position of buildings, structures and facilities; Ceiling drawing is the drawing of the main design and construction of ceiling, wall and ground in interior decoration engineering.

2. Floor laying refers to the decoration and division of all indoor floors, including the arrangement of floor tiles, the distribution of threshold stones, the laying direction of wooden floors, the division of wavy lines, and the detailed size of floor parquet; Pipeline layout, also known as pipeline installation drawing or piping drawing, mainly expresses the spatial position, size and specifications of pipelines and pipe fittings, valves and instrument control points in the workshop or device, as well as the connection relationship with related machinery and equipment.

3. An electrical diagram is a diagram that uses electrical graphic symbols, marked shells or simplified shapes to show the interrelationships and connections between components in an electrical system or equipment. Socket configuration diagram is the plane distribution connection diagram of sockets in cad graphics software.

4. The weak current diagram shows the relationship between systems or devices with graphic symbols or simplified shapes. Flue map refers to the location map of vertical smoke exhaust pipes used to discharge kitchen fumes and cooking waste gas in residential buildings.