National Architectural Standard Design Atlas 09S304 Sanitary Equipment Installation is an architectural installation atlas, which is used by practitioners in related fields such as design, construction and supervision. This revision mainly starts from the perspective of construction and installation, taking into account the needs of high, medium and low-grade users, updating the original types of sanitary wares and construction methods, and appropriately increasing the types of high and low-grade sanitary wares. The main contents include the construction and installation details of washbasin, laboratory basin, washbasin, sewage basin (basin), washbasin, kitchen washbasin, washbasin, toilet, squatting pan, bidet, shower room (device), urinal, defecation pool and catering wastewater separation tank.