Must the floor inside the factory be higher than that outside?

According to general design principles, the ground level inside a factory should usually be higher than that outside, so as to ensure that water does not enter the factory in the event of floods or other natural disasters. Furthermore, the floor inside the factory should also be higher than the roads outside, so as to ensure the proper functioning of the drainage system and prevent water from entering the factory area. Regarding the suitability of the ground level within the factory area and the slope of roads outside the factory, there are usually corresponding standards and regulations, such as building design codes and flood control standards. The specific details may need to be assessed and determined in accordance with local laws, regulations, and relevant standards. If the roads outside the factory slope from high to low and have a steep gradient, appropriate measures can be taken to address this situation, such as installing drainage ditches, retaining walls, and waterproof doors, in order to ensure that the floors inside the factory are not affected by external water flow. Of course, the actual design plans and countermeasures need to be determined based on the specific factory site and geological conditions, and may require evaluation and design by professional engineers. Therefore, when constructing or renovating a factory, it is recommended to consult relevant professionals for accurate and sound advice. .

This post was last edited by qugd on 2023-8-1 09:58. Consider the actual natural environment and the characteristics of that factory. Shipyards, especially large ones, are generally located in low-lying areas or right by the sea or rivers. Moreover, in modern large-scale trawler aquaculture, facilities are built directly in the sea, with the inside and outside of the facilities at the same level.

This post was last edited by ATP Space Studio on 2023-8-1 at 13:10. Control rooms, power distribution rooms, hazardous materials warehouses (except those in irrigation areas), and hazardous waste warehouses should be located in the higher parts of the factory site.

Thank you for your answer. But I always think that this is a chemical engineering forum, and all questions should inherently be viewed from a chemical engineering perspective.

The elevation of the plant (equipment) must be higher than that outside the plant; otherwise, the plant area will become a low-lying flooded area and rainwater will not be able to drain away.

There are also exceptions, such as the Dalian Petrochemical Refining Area, which is located in a reclamation area; it is bordered by a hillside on one side, an old factory complex on another, and the sea on the other two sides. However, the entire sewage system (including the sewage treatment plant) is at an elevation higher than sea level.

This post was last edited by cust008 on 2023-8-15 at 16:13. Is there any standard plain-text format? I have a few more questions: Should the walls surrounding the factory area serve to prevent external rainwater from entering? Is the wastewater from other factories discharged directly onto the ground and flows naturally from higher areas to lower areas toward our factory premises? If the slope of the ground is steep, then the slope of the road leading to the factory from the outside will also be steep. In such a case, if the road surface is at the same level as the highest point, wouldn’t this result in a large height difference between the factories located in lower areas and the road surface, thereby causing difficulties for vehicles to travel? Because the road surface is the lowest level, while the factory floor is the highest level.

Is there any written standard or specification? ----There are definitely guidelines for general layout and water supply and drainage design, but it’s not my area of expertise, so I can’t help you with that. Should the walls surrounding the factory site serve to prevent external rainwater from entering? ----No, the walls of my factory were knocked down by external rainwater; the entire factory was flooded up to the level of the calves, and the pumps and underground equipment suffered severe damage from the water. Is the wastewater from other factories discharged directly onto the ground and flows naturally from higher areas to lower areas toward our factory premises? ----Your factory area isn’t a drainage channel; you can install drainage ditches along the perimeter of the facility. If the slope of the ground is steep, then the slope of the road adjacent to the factory will also be steep. In such cases, if everything is at the same height as the highest point on the road, wouldn’t that result in a large height difference between the lower parts of the factory and the road, making it difficult for vehicles to pass? Because the road surface is the lowest level, while the factory floor is the highest level. ----I don’t quite understand this one; let’s try to figure it out. Since there is a height difference between the area outside the plant and the area inside, there will definitely be no driving lanes; instead, there will be a gentle slope leading into the plant (or facility) from a distance. The elevation of the plant area should be slightly higher than that of the road, with drainage ditches on both sides of the road.

Drainage is a major problem; in some factories located in flat areas, heavy rain can rise up to the knees