Own attic, choose I-beam or channel?
GB gb. Don't look cheap.There are many impurities in non GB steel, and the yield and tensile strength are not qualified. Does not meet the use requirements.
Channel steel: used for construction and mechanical use of carbon structural steel, is a complex cross-section of steel.Channel characteristics:Channel steel can change the structure of the building, and save construction materials.If the channel is constructed, it will be quick enough to be ready for use without waiting.Inadequate: it is an attic made of channel steel. When people move on it, there will be a certain shake. The smaller the channel gauge, the greater the sloshing. The larger the channel gauge, the smaller the shaking
Oneself take attic, suggest to choose I-beam, and choose GB steel, because stainless steel in non GB is more.I-beam is a kind of economical section steel with better mechanical performanceFeatures: I-beamWide flange and large lateral rigidity. Good bending resistance.The two surfaces of the flanges are mutually parallel so that the connection, processing and installation are simple and convenient.Compared with the general steel, the utility model has the advantages of low cost, high precision, little residual stress, no expensive welding materials and welding seam detection, and the cost of steel structure production is saved by about 30%.Under the same section load, the weight of hot-rolled H steel structure is less than that of traditional structure 15%-20%.Compared with the concrete structure, the I-beam structure can increase the use area of 6%, while the weight of the structure can be reduced by 20% and 30%, and the internal force of the structural design can be reduced.The I-beam can be processed into T steel, and the castellated beams can form various section forms to meet the demands of engineering design and manufacture.
With I-shaped, the I-shaped force is large and firm.I-steel whether ordinary or light, because the section size are relatively high and narrow, so the moment of inertia of section two of the spindle is larger, so it only can be directly used in the web plane bending member or the composition of lattice stress components. It is not suitable for the axial compression member or the bent member perpendicular to the web plane, which has great limitations in its application.
