Standards for heavy steel and light steel structure factory shed
There is no uniform standard for the judgment of heavy steel and light steel structure factory shed, and many experienced designers or project managers often cannot fully understand, but we can comprehensively consider and judge some data.
1. Workshop lifting weight: greater than or equal to 25 tons, which can be regarded as a heavy steel structure.
2. Quantity per square meter: greater than or equal to 50KG/㎡, which can be regarded as heavy steel structure.
3. The thickness of the steel plate of the main component: greater than or equal to 10MM, and the light steel structure is rarely used.
In addition, there are some reference values, such as cost per square meter, maximum component weight, span, structural form, cornice height, etc. These can provide empirical data when judging whether a factory building is heavy steel or light steel. Of course many buildings are light, but some we can say with certainty are heavy steel. Such as: petrochemical plant facilities, power plant plants, large-span stadiums, exhibition centers, high-rise or super high-rise steel structures.
In fact, there is no mention of heavy steel in the national standards and technical documents. In order to distinguish the steel structure of light houses, it may be more appropriate to call general steel structures ordinary steel. Due to the wide range of ordinary steel structure factory shed, it can include various steel structures, regardless of the load size, and even many contents of light steel structures. The technical regulations of light steel structures only stipulate some more specific contents for their light characteristics. Only for single-layer door frames.
Light steel is also a vague term, which generally has two understandings. One is the current steel structure design specification, round steel, small angle steel, light steel structure, which refers to a light steel structure made of round steel and angle steel smaller than L45*4 and L56*36*4.
It can be seen that the difference between light steel and heavy steel steel structure factory shed is not the weight of the structure itself, but the weight of the enclosure materials. The concept of structural design is the same.
