Legal basis: Notice of the State Council on Further Deepening the Reform of Urban Housing System and Accelerating Housing Construction Article 3 The * * * used parts mentioned in these Measures refer to the main load-bearing structural parts of the house (including foundation, internal and external load-bearing walls, columns, beams, floors and roofs, etc.). ), outdoor walls, hallways, stairwells, corridors, etc. * * * Facilities and equipment refer to water pipes, downpipes, water tanks, booster pumps, elevators, antennas, lighting of power supply lines, boilers, heating lines, gas lines, fire-fighting facilities, green spaces, roads, street lamps, ditches, pools, wells, non-operating parking garages and public sports in residential quarters or single houses.