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Question:

Formula for section modulus of channel steel

What kind of channel is the best, there is an answer, if not, can come to a formula is OK?

Answer:

6.3# channel steel, Wx=16.1cm^4, Wy=4.5cm^48# channel steel, Wx=25.3cm^4, Wy=7.9cm^4.. These are professional books, professional data, no formula.
Wx:1. first calculate the cross-sectional area of the flange and web 2. respectively; find out the flange and web section of the center axis x1-x1, x2-x2; 3. were found the whole section X-X from the spindle flange and web section of the distance from the center of Y1, Y2, (Y1 for channel 0, x1-x1 is X-X; 4. spindle) are calculated respectively. The moment of inertia of flange and web sections of x1-x1, x2-x2, and the moment of inertia of flange part of the shift shaft to the spindle, X-X, flange and web can be obtained by adding the Ix section of the X-X moment of inertia; 5. Ix / H/2 is Wx.
Section modulus Wx and Wy of channel steel are the same as those of hot-rolled steel (including angle steel and I-beam). They only need to be checked on the ready form.

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