Determine the structure of heavy steel high strength bolt and light steel structure does not have a unified standard, many experienced designers or project managers are often not fully understand, but we can take into account some of the data and be judged:
High – rise steel structure
1, plant crane lifting weight: greater than or equal to 25 tons, can be considered heavy steel structure.
2, the amount of steel per square meter: greater than or equal to 50KG / ㎡, can be considered heavy steel structure.
3, the main component plate thickness: greater than or equal 10MM, light steel structure with less.
In addition, there are some high strength bolt reference values: such as the cost per square meter, the maximum component weight, maximum span, structure, eaves high, these are in determining whether the plant is heavy steel or light steel can provide empirical data, of course, many buildings are light, Heavy steel has. However, some of the more we can say is heavy steel: such as: petrochemical plant facilities, power plants, large-span stadiums, exhibition centers, high-rise or super high-rise steel structure.
In fact the national norms and technical documents are not heavy steel one said, in order to distinguish between light steel housing, may be said that the general steel structure for the “General Steel” more appropriate. Because of the wide range of common steel structures, it can contain a variety of steel structures, regardless of load size, or even light steel structure of many of the content, light steel structure of the technical specifications for its “light” only provides some more specific characteristics Content, and the scope is limited to single-layer portal frame.
Light steel high strength bolt is also a rather vague term, generally can have two kinds of understanding. One is the current “Steel Structure Design Code” (GBJ 17-88) in Chapter XI “round steel, small angle steel light steel structure” refers to the use of round and less than L45 * 4 and L56 * 36 * 4 Angle steel production of light steel structure
This shows that the light steel and heavy steel is not the structure of the severity of their own, and in the bear the weight of the envelope material, and in the structural design concept is the same.