在现代机械化生产的条件下,要把工艺、运输、卫生—技术以及动力用的所有必需的全套设施与设备都布置在同一层上,实际上是不可能的。所以,对于由人数不多的人员周期看管的设备与设施(运输设备、卫生工程设施等),通常总是比由大量工作人员完成的主要工艺操作要分配到不太方便的场地(地下室、地道、平台及阁楼)。但是,目前这些构筑物的需要量是如此之大,仅仅是供现代单层铸造车间用的地下室的面积在美国就为建筑物面积的50～70％。此外,部分通风装置和变压器室不得不布置在厂房的屋顶上,这在很多气候条件下是不能同意的。设置深的地下室以及为安置重型的与震动的设 Under the conditions of modern mechanized production, it is virtually impossible to lay down all the necessary complete facilities and equipment for process, transport, hygienic-technology and power supply on the same level. Therefore, equipment and facilities (transport equipment, sanitary engineering facilities, etc.) that are to be supervised by a small number of personnel are usually assigned to less convenient sites than the main process operations performed by a large number of staff members (basements, tunnels , Platform and loft). However, at present, the demand for these structures is so great that only the area of ​​the basement for modern single-story foundry is 50 to 70% of the building area in the United States. In addition, some ventilation and transformer rooms have to be placed on the roof of the plant, which is not acceptable under many climatic conditions. Set deep basement as well as for setting heavy and shocking settings