The characteristics of industrial plant industrial plant according to its building structure type can be divided into single-story industrial buildings and multi-story industrial buildings. Multi-storey industrial buildings, the vast majority of plants in light industry, electronics, instrumentation, communications, medicine and other industries, such plant floors are generally not very high, and its industrial plant program design-Manchuen lighting design is similar to the common scientific research and experimental buildings, more fluorescent lighting program. Machining, metallurgy, textile and other industries, production plants are generally single-story industrial buildings, and according to the needs of production, more multi-span single-story industrial plants, that is, next to the parallel arrangement of multi-span plant, the span depending on the needs of the same or different. Single-story plant to meet the requirements of a certain building modulus on the basis of process needs to determine the building width (span), length and height. The span of the plant B: generally 6, 9, 12, 15, 18, 21, 24, 27, 30, 36m? The length of the plant L: less tens of meters, more hundreds of meters. The height of the plant H: low general 5-6m, high up to 30-40m, or even higher. The span and height of the plant is the main factor to be considered in the lighting design of the plant. In addition, according to the continuity of industrial production and the need for inter-section product transportation, most industrial plants with cranes, its lifting weight can be as light as 3 ~ 5t, up to hundreds of tons of large (at present, the machinery industry, the maximum lifting capacity of a single crane up to 800t). Therefore, factory lighting is usually installed in the roof of the lamps and lanterns to realize. Industrial plant design specifications for industrial plant design standards are based on the structure of the plant and the development of plant design according to the needs of the process and production conditions, to determine the form of the plant before the design. Standard plant design specifications: First, the design of industrial plants must implement the relevant national policies to achieve technologically advanced, economically rational, safe and suitable to ensure quality, in line with the requirements of energy conservation and environmental protection. Second, this specification applies to the design of new construction and alteration, expansion of industrial plants, but does not apply to bacteria as the control object of biological clean room. This specification related to fire prevention and evacuation, fire fighting facilities chapter does not apply to the building height of more than 24 meters of high-rise industrial plants and underground industrial plant design. Third, the article in the use of the original building for clean technology transformation, industrial plant design must be based on the requirements of the production process, according to local conditions, differentiation, and make full use of existing technical facilities. Fourth, the industrial plant design should be for construction and installation, maintenance and management, testing and safe operation to create the necessary conditions. Fifth, the design of industrial plants in addition to the implementation of this specification should be in line with current national standards, specifications of the relevant requirements. Sixth, the industrial plant is by an independent building (workshop), and an independent building (dormitory), the distance between the two buildings standard is 10 meters, the nearest shall not be less than 5 meters, in order to eliminate acceptance. The ratio of the floor area of the building to the building area is 1:3. Steel Structure Plant Design Standards: In order to standardize and serialize the geometric dimensions of the main components of the steel structure plant building for the benefit of industrial production, this standard is specially formulated. This standard applies to: i. design of assembled or partially assembled reinforced concrete structure and mixed structure plant; ii. preparation of standard design atlas of plant building components. Note: ① design of steel structure plant, restricted by the conditions of the renovation (expansion) plant, cast-in-place reinforced concrete structure plant, process of plant has special requirements for the plant or according to the standard design in the technical and economic will produce significant unreasonable plant, may not implement some of the provisions of this standard; ② the use of new technologies, new structures and new materials, plant, may not be subject to the limitations of some of the provisions of this standard. In a construction site, to determine the design of the plant, it is appropriate to make the type of components uniform. On the basis of technically and economically rational, the body shape of the plant should strive to be simple, to avoid setting up longitudinal and transverse spans and multi-span plant in the height difference. In the preparation of the standard design of plant building components atlas, should make the same use of components with maximum interchangeability. Plant building design should be in line with the relevant provisions of this standard, but also in line with the current provisions of relevant national standards.