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Question:# How is the weight of H steel calculated?

How is the weight of H steel calculated?

H section steel is a kind of economical section high efficiency profile with more optimized sectional area distribution and stronger weight ratio. It is named after the English letter "H". Because all the sections of H steel are arranged at right angles, H steel has been widely used in all directions for its advantages of high bending resistance, simple construction, cost saving and light weight.

The formula for calculating the load-bearing capacity of H steel is as follows:M = [（H 2×2×T1 + T2）××××0.858 T2 + R / R）×1000×7.85

RA=RB=P/2 Mc=Mmax=Pl/4 fc=fmax=Pl^3/48EI A= B=Pl^2/16EI symbol and theta theta P - Q - N; concentrated load, uniform load, N; R - bearing force, the direction of the action is positive, N; M - bending moment, the compression of the upper section, lower tension is positive, Nm; Q, the shear. The adjacent section of the torque in a clockwise direction is positive, N; F, deflection, downward displacement is positive, mm; angle theta, clockwise rotation as positive degrees; E - Gpa; I - elastic modulus, cross-sectional moment of inertia, m^4; L = x/. =x'/l, zeta, alpha beta gamma = a/l, =b/l, =c/l from two aspects: first, from the beam considering shear stress second, the bending stress is considered. The maximum available shear strength of steel can be found from the steel sheet, T, Tmax=Q/Ib[BH^2/8-< (B-b), h^2>/8]: Tmax is the maximum shear strength. The maximum shear load of the beam can be calculated by replacing the available shear strength T. Q is the uniformly distributed load, and the section moment of inertia of I is B, which can be found in the steel table. (cm^4) the maximum width of the section of i-beam. B is the minimum width of I-beam section, h is the height of minimum width section of i-beam. H is the calculation of the height normal stress of the maximum width section of I-beam: Ysigma=M/W, M=, maximum bending moment = load, travel distance, W= flexural modulus. With the maximum allowable stress of Ysigma=, the maximum value of the load can be obtained.

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